Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.3 Codex
87
MiniMax M2.7
62
Pick GPT-5.3 Codex if you want the stronger benchmark profile. MiniMax M2.7 only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.
Agentic
+14.5 difference
Coding
+9.4 difference
GPT-5.3 Codex
MiniMax M2.7
$1.75 / $14
$0.3 / $1.2
79 t/s
45 t/s
88.26s
2.53s
400K
200K
Pick GPT-5.3 Codex if you want the stronger benchmark profile. MiniMax M2.7 only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.
GPT-5.3 Codex is clearly ahead on the provisional aggregate, 87 to 62. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.3 Codex's sharpest advantage is in agentic, where it averages 71.5 against 57. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 77.3% to 57%.
GPT-5.3 Codex is also the more expensive model on tokens at $1.75 input / $14.00 output per 1M tokens, versus $0.30 input / $1.20 output per 1M tokens for MiniMax M2.7. That is roughly 11.7x on output cost alone. GPT-5.3 Codex is the reasoning model in the pair, while MiniMax M2.7 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. GPT-5.3 Codex gives you the larger context window at 400K, compared with 200K for MiniMax M2.7.
GPT-5.3 Codex is ahead on BenchLM's provisional leaderboard, 87 to 62. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 77.3% and 57%.
GPT-5.3 Codex has the edge for coding in this comparison, averaging 63.1 versus 53.7. Inside this category, Vibe Code Bench is the benchmark that creates the most daylight between them.
GPT-5.3 Codex has the edge for agentic tasks in this comparison, averaging 71.5 versus 57. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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