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GPT-6 Sol

ECI#10
164
OpenAI
Sep. 22, 2026
Closed weights

GPT-6 Sol is a closed-weights model from OpenAI, released September 22, 2026. It has an ECI score of 164 and ranks 10th of 237 tracked models. At the time of its release, it ranked 6th of 226 tracked models.

GPT-6 Sol vs select alternatives

DomainBenchmark
GPT-6 Sol
OpenAI
Sep. 22, 2026
Closed weights
OpenAI
Jul. 9, 2026
Closed weights
OpenAI
Sep. 3, 2026
Closed weights
Anthropic
Jul. 24, 2026
Closed weights
ECI scoreBest score 169
164163169164
Ranking#10#11#1 – Best#8
Games
SpireClimbBest score 34%
9%
n/a
34%
n/a
Chess PuzzlesBest score 76%
56%
68%
76%
43%
53%
45%
76%
46%
Mystery Game PuzzlesBest score 84%
56%
58%
84%
59%
Mathematics
FrontierMath ErdősBest score 4%
1%
0%
3%
0%
90%
89%
94%
86%
FrontierMath Tier 4 (v2)Best score 100%
90%
83%
98%
73%
Multimodal
58%
57%
80%
61%
World knowledge
SimpleQA VerifiedBest score 76%
61%
70%
76%
60%

Model metadata