{
    "metadata": {
        "benchmark": "Vibe Code Bench 1-100",
        "slug": "vcb-1-100",
        "description": "Can models extend a working web application across a long sequence of dependent requests?",
        "benchmark_id": "vcb_1_100",
        "family": "vcb_1_100",
        "version": "1.0",
        "updated": "2026-10-29",
        "dataset_type": "private",
        "industry": "coding",
        "tasks": {
            "overall": "Overall"
        },
        "models": [
            "alibaba/qwen3.8-max",
            "alibaba/qwen3.8-max-internal",
            "anthropic/claude-fable-5-1",
            "anthropic/claude-haiku-5-5",
            "anthropic/claude-opus-5",
            "anthropic/claude-opus-5-5",
            "anthropic/claude-sonnet-5",
            "deepseek/deepseek-v4-pro-0813",
            "deepseek/deepseek-v4.1-flash",
            "google/gemini-3.1-pro-preview",
            "google/gemini-3.8-flash",
            "google/gemini-4-argon",
            "grok/grok-4.6",
            "kimi/kimi-k3",
            "meta/muse-wonder",
            "meta/muse-wonder-full",
            "meta/muse_spark_1_3_max",
            "minimax/MiniMax-M3",
            "mistralai/mistral-large-4",
            "openai/gpt-5.6-luna",
            "openai/gpt-5.6-sol",
            "openai/gpt-5.6-terra",
            "openai/gpt-6-astra",
            "thinkingmachines/inkling",
            "zai/glm-5.3",
            "zai/glm-5.3-flash"
        ],
        "partners": [],
        "showBadge": false,
        "visible": true,
        "use_cost_per_test": true,
        "token_tasks_measured": 50,
        "runner": "external",
        "mode": "agentic",
        "archived": false,
        "partner": false,
        "total_models": 26
    },
    "tasks": {
        "overall": {
            "meta/muse-wonder-full": {
                "accuracy": 33.978,
                "latency": 7008.163,
                "stderr": 5.318,
                "cost_per_test": 19.5403,
                "token_totals": {
                    "input_tokens": 1368131401,
                    "output_tokens": 15029769,
                    "reasoning_tokens": 4305633,
                    "cache_read_tokens": 1262443382,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 131072,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Meta",
                "harness": "OpenHands"
            },
            "anthropic/claude-opus-5-5": {
                "accuracy": 30.361,
                "latency": 8909.323,
                "stderr": 4.829,
                "cost_per_test": 44.115239,
                "token_totals": {
                    "input_tokens": 2061393498,
                    "output_tokens": 40240560,
                    "reasoning_tokens": 15114167,
                    "cache_read_tokens": 1855580263,
                    "cache_write_tokens": 205746280
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": "xhigh",
                "provider": "Anthropic",
                "harness": "OpenHands"
            },
            "anthropic/claude-opus-5": {
                "accuracy": 28.533,
                "latency": 4905.208,
                "stderr": 4.333,
                "cost_per_test": 41.49277,
                "token_totals": {
                    "input_tokens": 1662905571,
                    "output_tokens": 19780293,
                    "reasoning_tokens": 5548533,
                    "cache_read_tokens": 1532689850,
                    "cache_write_tokens": 130166117
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": "max",
                "provider": "Anthropic",
                "harness": "OpenHands"
            },
            "anthropic/claude-fable-5-1": {
                "accuracy": 28.0,
                "latency": 10359.295,
                "stderr": 4.488,
                "cost_per_test": 149.664612,
                "token_totals": {
                    "input_tokens": 3850655864,
                    "output_tokens": 59510706,
                    "reasoning_tokens": 19658951,
                    "cache_read_tokens": 3560657465,
                    "cache_write_tokens": 289890926
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": "max",
                "provider": "Anthropic",
                "harness": "OpenHands"
            },
            "openai/gpt-6-astra": {
                "accuracy": 27.644,
                "latency": 12339.625,
                "stderr": 4.082,
                "cost_per_test": 84.720155,
                "token_totals": {
                    "input_tokens": 1204257940,
                    "output_tokens": 29110291,
                    "reasoning_tokens": 16173343,
                    "cache_read_tokens": 1067183125,
                    "cache_write_tokens": 137024778
                },
                "token_tasks_measured": 50,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "OpenAI",
                "harness": "OpenHands"
            },
            "meta/muse-wonder": {
                "accuracy": 26.55,
                "latency": 1868.026,
                "stderr": 4.333,
                "cost_per_test": 13.721565,
                "token_totals": {
                    "input_tokens": 1004145187,
                    "output_tokens": 10483771,
                    "reasoning_tokens": 2955452,
                    "cache_read_tokens": 931625774,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 131072,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Meta",
                "harness": "OpenHands"
            },
            "alibaba/qwen3.8-max-internal": {
                "accuracy": 24.833,
                "latency": 9477.164,
                "stderr": 4.489,
                "cost_per_test": 11.589207,
                "token_totals": {
                    "input_tokens": 1156717762,
                    "output_tokens": 19096498,
                    "reasoning_tokens": 9445348,
                    "cache_read_tokens": 1056316672,
                    "cache_write_tokens": null
                },
                "token_tasks_measured": 50,
                "temperature": 0.7,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": null,
                "provider": "Alibaba",
                "harness": "OpenHands"
            },
            "openai/gpt-5.6-luna": {
                "accuracy": 22.594,
                "latency": 7374.465,
                "stderr": 4.003,
                "cost_per_test": 4.914059,
                "token_totals": {
                    "input_tokens": 3743737992,
                    "output_tokens": 45223722,
                    "reasoning_tokens": 22629712,
                    "cache_read_tokens": 3258256123,
                    "cache_write_tokens": 485178760
                },
                "token_tasks_measured": 49,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "OpenAI",
                "harness": "OpenHands"
            },
            "google/gemini-4-argon": {
                "accuracy": 21.2,
                "latency": 6179.48,
                "stderr": 3.811,
                "cost_per_test": 18.659304,
                "token_totals": {
                    "input_tokens": 750135416,
                    "output_tokens": 10070397,
                    "reasoning_tokens": 2747467,
                    "cache_read_tokens": 597101156,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 262144,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Google",
                "harness": "OpenHands"
            },
            "meta/muse_spark_1_3_max": {
                "accuracy": 20.461,
                "latency": 1201.545,
                "stderr": 3.847,
                "cost_per_test": 5.599743,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 956185799,
                    "output_tokens": 11997798,
                    "reasoning_tokens": 4891693,
                    "cache_read_tokens": 878396128,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 131072,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Meta",
                "harness": "OpenHands"
            },
            "anthropic/claude-haiku-5-5": {
                "accuracy": 20.406,
                "latency": 14744.334,
                "stderr": 3.792,
                "cost_per_test": 8.304533,
                "token_totals": {
                    "input_tokens": 2608426166,
                    "output_tokens": 179651143,
                    "reasoning_tokens": 155058681,
                    "cache_read_tokens": 2323095874,
                    "cache_write_tokens": 285283146
                },
                "token_tasks_measured": 50,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": "max",
                "provider": "Anthropic",
                "harness": "OpenHands"
            },
            "openai/gpt-5.6-sol": {
                "accuracy": 20.011,
                "latency": 9421.289,
                "stderr": 3.629,
                "cost_per_test": 47.425154,
                "token_totals": {
                    "input_tokens": 2190640166,
                    "output_tokens": 26602897,
                    "reasoning_tokens": 11637213,
                    "cache_read_tokens": 1981275557,
                    "cache_write_tokens": 209231094
                },
                "token_tasks_measured": 50,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "OpenAI",
                "harness": "OpenHands"
            },
            "zai/glm-5.3": {
                "accuracy": 19.994,
                "latency": 5169.473,
                "stderr": 3.811,
                "cost_per_test": 8.236953,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 993998284,
                    "output_tokens": 16275239,
                    "reasoning_tokens": 9949408,
                    "cache_read_tokens": 922246489,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": 0.95,
                "max_output_tokens": 131072,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Fireworks AI",
                "harness": "OpenHands"
            },
            "google/gemini-3.8-flash": {
                "accuracy": 18.772,
                "latency": 3931.352,
                "stderr": 3.313,
                "cost_per_test": 18.906982,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 2327012636,
                    "output_tokens": 18629950,
                    "reasoning_tokens": 10935636,
                    "cache_read_tokens": 1988810722,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 65536,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Google",
                "harness": "OpenHands"
            },
            "kimi/kimi-k3": {
                "accuracy": 18.244,
                "latency": 6487.278,
                "stderr": 3.92,
                "cost_per_test": 9.39737,
                "token_totals": {
                    "input_tokens": 625231389,
                    "output_tokens": 7835757,
                    "reasoning_tokens": 3151763,
                    "cache_read_tokens": 564208155,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": 0.95,
                "max_output_tokens": 262144,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Moonshot AI",
                "harness": "OpenHands"
            },
            "deepseek/deepseek-v4-pro-0813": {
                "accuracy": 17.533,
                "latency": 2262.422,
                "stderr": 3.414,
                "cost_per_test": 5.892792,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 1634458146,
                    "output_tokens": 23001769,
                    "reasoning_tokens": 12721706,
                    "cache_read_tokens": 1535912960,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 49,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 384000,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "DeepSeek",
                "harness": "OpenHands"
            },
            "deepseek/deepseek-v4.1-flash": {
                "accuracy": 16.378,
                "latency": 1701.009,
                "stderr": 3.194,
                "cost_per_test": 0.688342,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 842291436,
                    "output_tokens": 11622921,
                    "reasoning_tokens": 6175113,
                    "cache_read_tokens": 789856512,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 384000,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "DeepSeek",
                "harness": "OpenHands"
            },
            "zai/glm-5.3-flash": {
                "accuracy": 16.033,
                "latency": 2343.096,
                "stderr": 3.279,
                "cost_per_test": 0.462842,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 927093184,
                    "output_tokens": 13394529,
                    "reasoning_tokens": 7235841,
                    "cache_read_tokens": 828975104,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": 0.95,
                "max_output_tokens": 131072,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Fireworks AI",
                "harness": "OpenHands"
            },
            "openai/gpt-5.6-terra": {
                "accuracy": 14.822,
                "latency": 6536.122,
                "stderr": 3.123,
                "cost_per_test": 33.326696,
                "token_totals": {
                    "input_tokens": 2455464897,
                    "output_tokens": 48918335,
                    "reasoning_tokens": 30228890,
                    "cache_read_tokens": 2199619998,
                    "cache_write_tokens": 255401967
                },
                "token_tasks_measured": 50,
                "temperature": null,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": "max",
                "verbosity": null,
                "compute_effort": null,
                "provider": "OpenAI",
                "harness": "OpenHands"
            },
            "grok/grok-4.6": {
                "accuracy": 14.75,
                "latency": 7851.405,
                "stderr": 3.17,
                "cost_per_test": 26.271157,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 1049006874,
                    "output_tokens": 35858570,
                    "reasoning_tokens": 24714425,
                    "cache_read_tokens": 666404864,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 0.7,
                "top_p": 0.95,
                "max_output_tokens": null,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "SpaceXAI",
                "harness": "OpenHands"
            },
            "mistralai/mistral-large-4": {
                "accuracy": 14.261,
                "latency": 3593.189,
                "stderr": 3.205,
                "cost_per_test": 3.435784,
                "token_totals": {
                    "input_tokens": 739497578,
                    "output_tokens": 13186574,
                    "reasoning_tokens": null,
                    "cache_read_tokens": 592937984,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": 0.95,
                "max_output_tokens": 256000,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Mistral AI",
                "harness": "OpenHands"
            },
            "anthropic/claude-sonnet-5": {
                "accuracy": 13.822,
                "latency": 15369.858,
                "stderr": 2.985,
                "cost_per_test": 71.148517,
                "token_totals": {
                    "input_tokens": 3606408571,
                    "output_tokens": 99276096,
                    "reasoning_tokens": 73810698,
                    "cache_read_tokens": 3320486901,
                    "cache_write_tokens": 285831107
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": "max",
                "provider": "Anthropic",
                "harness": "OpenHands"
            },
            "alibaba/qwen3.8-max": {
                "accuracy": 12.833,
                "latency": 5735.815,
                "stderr": 3.183,
                "cost_per_test": 9.675734,
                "token_totals": {
                    "input_tokens": 949815427,
                    "output_tokens": 16221381,
                    "reasoning_tokens": 7715766,
                    "cache_read_tokens": 864669952,
                    "cache_write_tokens": null
                },
                "token_tasks_measured": 50,
                "temperature": 0.7,
                "top_p": null,
                "max_output_tokens": 128000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": null,
                "provider": "Alibaba",
                "harness": "OpenHands"
            },
            "minimax/MiniMax-M3": {
                "accuracy": 9.222,
                "latency": 1570.129,
                "stderr": 2.857,
                "cost_per_test": 3.028103,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 786506665,
                    "output_tokens": 7461818,
                    "reasoning_tokens": 307888,
                    "cache_read_tokens": 705015023,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 50,
                "temperature": 1.0,
                "top_p": 0.95,
                "max_output_tokens": 512000,
                "reasoning": null,
                "reasoning_effort": null,
                "verbosity": null,
                "compute_effort": null,
                "provider": "MiniMax",
                "harness": "OpenHands"
            },
            "thinkingmachines/inkling": {
                "accuracy": 7.333,
                "latency": 3001.539,
                "stderr": 1.839,
                "cost_per_test": 4.997334,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 913759290,
                    "output_tokens": 10283113,
                    "reasoning_tokens": null,
                    "cache_read_tokens": 856068096,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 49,
                "temperature": 1.0,
                "top_p": 1.0,
                "max_output_tokens": 256000,
                "reasoning": null,
                "reasoning_effort": "0.99",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Thinkingmachines",
                "harness": "OpenHands"
            },
            "google/gemini-3.1-pro-preview": {
                "accuracy": 6.694,
                "latency": 688.056,
                "stderr": 2.398,
                "cost_per_test": 3.358183,
                "avg_cache_write_tokens": 0.0,
                "token_totals": {
                    "input_tokens": 276067126,
                    "output_tokens": 2666205,
                    "reasoning_tokens": 1212911,
                    "cache_read_tokens": 233098753,
                    "cache_write_tokens": 0
                },
                "token_tasks_measured": 49,
                "temperature": 1.0,
                "top_p": null,
                "max_output_tokens": 65536,
                "reasoning": null,
                "reasoning_effort": "high",
                "verbosity": null,
                "compute_effort": null,
                "provider": "Google",
                "harness": "OpenHands"
            }
        }
    }
}