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GPT-5.4

ECI#23
157
OpenAI
Mar. 5, 2026
Closed weights

GPT-5.4 is a closed-weights model from OpenAI, released March 5, 2026. It has an ECI score of 157 and ranks 23rd of 260 tracked models. At the time of its release, it ranked 3rd of 193 tracked models.

GPT-5.4 vs select alternatives

DomainBenchmark
GPT-5.4
OpenAI
Mar. 5, 2026
Closed weights
OpenAI
Feb. 5, 2026
Closed weights
Anthropic
Feb. 5, 2026
Closed weights
Google DeepMind
Feb. 19, 2026
Closed weights
ECI scoreBest score 167
157157155155
Ranking#23#21#33#36
Games
Chess PuzzlesBest score 74%
48%
n/a
21%
55%
25%
n/a
13%
14%
Mystery Game PuzzlesBest score 84%
37%
n/a
25%
34%
Mathematics
79%
n/a
66%
60%
FrontierMath Tier 4 (v2)Best score 100%
49%
n/a
27%
27%
Multimodal
38%
n/a
28%
27%
Software engineering
MirrorCodeBest score 77%
16%
n/a
n/a
9%
SWE-bench VerifiedBest score 83%
77%
75%
79%
76%
World knowledge
SimpleQA VerifiedBest score 76%
45%
n/a
47%
74%

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