GPT 5.1 Codex Max

Release Date: 12/4/2025

Benchmarked by Vals Logo

OpenAI's frontier agentic coding model. Good at long-running coding tasks.

Avg. Accuracy

50.38%

Latency

6931.52s

Cost (In/Out)

1.25 / 10

Context Window

400k

Max Output Tokens

128k

Input Modality

Benchmarks

Accuracy

Rankings

Vibe Code Bench

0.0%

4/ 15

IOI

0.0%

7/ 40

LiveCodeBench

0.0%

10/ 86

SWE-bench

0.0%

6/ 45

Terminal-Bench

0.0%

8/ 47

Academic Benchmarks
Proprietary Benchmarks (contact us to get access)

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