Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Composer 2
73
Gemma 4 31B
65
Pick Composer 2 if you want the stronger benchmark profile. Gemma 4 31B only becomes the better choice if you want the cheaper token bill or you need the larger 256K context window.
Coding
+16.4 difference
Composer 2
Gemma 4 31B
$0.5 / $2.5
$0 / $0
N/A
N/A
N/A
N/A
200K
256K
Pick Composer 2 if you want the stronger benchmark profile. Gemma 4 31B only becomes the better choice if you want the cheaper token bill or you need the larger 256K context window.
Composer 2 is clearly ahead on the provisional aggregate, 73 to 65. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Composer 2's sharpest advantage is in coding, where it averages 58 against 41.6. The single biggest benchmark swing on the page is SWE-Rebench, 58% to 41.6%.
Composer 2 is also the more expensive model on tokens at $0.50 input / $2.50 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for Gemma 4 31B. That is roughly Infinityx on output cost alone. Gemma 4 31B gives you the larger context window at 256K, compared with 200K for Composer 2.
Composer 2 is ahead on BenchLM's provisional leaderboard, 73 to 65. The biggest single separator in this matchup is SWE-Rebench, where the scores are 58% and 41.6%.
Composer 2 has the edge for coding in this comparison, averaging 58 versus 41.6. Inside this category, React Native Evals is the benchmark that creates the most daylight between them.
Estimates at 50,000 req/day · 1000 tokens/req average.
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