Compare Models

GPT-6.1 Sol

GPT-6.1 Sol is a model from OpenAI, released September 29, 2026. It ranks #8 of 44 models on the Vals Index with 61.15%. Its best result is #2 of 38 on Terminal-Bench Science.

Release Date: Sep 29, 2026

Developer OpenAI  🇺🇸
Context Window 1M
Max Output Tokens 128k
Token Costs (in/out) $2.00/10.00
Weights Private
Input Modalities

Accuracy

61.15 % ± 1.01

Cost / Test (Vals Index)

$ 3.237

Latency

43 min 10 s

Vals Index
BenchmarksAccuracyRankings
Vals Index

61.15%

±1.01
8/44
Vals RSI Index

26.62%

7/24
Code Migration

65.12%

±4.36
5/74
CyberBench v1.1

39.29%

±2.74
42/44
EMB

70.77%

±2.71
12/71
Finance Agent (v2)

52.03%

±0.31
32/75
Legal Research Bench

38.46%

±3.38
31/74
MedCode

48.84%

±2.12
26/105
MedScribe

86.45%

±1.90
21/107
MysteryMechanism

46.40%

±3.35
5/24
ProofBench v1.1

99.00%

±1.00
4/47
SAGE

46.54%

±3.46
35/90
Public Benefits Bench v1.1

59.34%

±1.28
32/47
SRE Bench

50.76%

±3.10
2/32
Tax Agent Bench

62.31%

±3.20
28/66
Vibe Code Bench v1.1

88.93%

±1.89
7/109
BioMysteryBench

79.63%

±0.74
2/24
Harvey's Legal Agent Benchmark

5.42%

±1.75
32/75
IOI

96.89%

±3.11
3/41
ProgramBench

3.00%

±1.21
5/62
Terminal-Bench 4.0

55.05%

±1.82
6/44
Terminal-Bench Science

52.86%

±6.01
2/38
Proprietary BenchmarksAcademic BenchmarksIndustry Partners
Vals
Default Provider : OpenAI
Temperature: Default
Top P: Default
Top K: Default
Max Output Tokens: 128,000
Reasoning Effort: max