Head-to-head comparison across 2benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.5
89
MiniMax M2.7
64
Verified leaderboard positions: GPT-5.5 #2 · MiniMax M2.7 unranked
Pick GPT-5.5 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
+24.8 difference
Coding
+4.9 difference
GPT-5.5
MiniMax M2.7
$5 / $30
$0.3 / $1.2
N/A
45 t/s
N/A
2.53s
1M
200K
Pick GPT-5.5 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-5.5 is clearly ahead on the provisional aggregate, 89 to 64. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5.5's sharpest advantage is in agentic, where it averages 81.8 against 57. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 82.7% to 57%.
GPT-5.5 is also the more expensive model on tokens at $5.00 input / $30.00 output per 1M tokens, versus $0.30 input / $1.20 output per 1M tokens for MiniMax M2.7. That is roughly 25.0x on output cost alone. GPT-5.5 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-5.5 gives you the larger context window at 1M, compared with 200K for MiniMax M2.7.
GPT-5.5 is ahead on BenchLM's provisional leaderboard, 89 to 64. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 82.7% and 57%.
GPT-5.5 has the edge for coding in this comparison, averaging 58.6 versus 53.7. Inside this category, SWE-bench Pro is the benchmark that creates the most daylight between them.
GPT-5.5 has the edge for agentic tasks in this comparison, averaging 81.8 versus 57. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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