OpenAI · Closed weights · Released Sep 29, 2026
GPT-6.1 Sol
input $2.00/M · output $10.00/M · list openai-gpt-6.1-sol-2026-09-29 (Sep 29, 2026)
Aggregate score
55.4
±2.3 · #1 of 2
Accuracy
75%
89% coverage
Hallucination
56%
of missed items
Cost per task
$0.0052
$0.0069 per correct
Latency
—
Not measured at standard speed
Output tokens
501
per task
Fingerprint
Aggregate and axis scores against every measured model. Ticks are the other models; the accent dot is GPT-6.1 Sol.
Aggregate
55.4
Knowledge
27.6
Math
83.1
Reasoning lift
Score with reasoning on minus score with reasoning off, on the same items.
Not measured: GPT-6.1 Sol was not run under both conditions.
Sub-families
| Sub-family | Score | 95% int. | Acc. | Cov. | Halluc. | $/task | Rank |
|---|---|---|---|---|---|---|---|
| Knowledge | |||||||
| knowledge_depth | 27.6 | #1 | |||||
| Math | |||||||
| ballpark | 83.1 | #1 | |||||