Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Composer 2.5
82
Kimi K2.6
85
Verified leaderboard positions: Composer 2.5 unranked · Kimi K2.6 #8
Pick Kimi K2.6 if you want the stronger benchmark profile. Composer 2.5 only becomes the better choice if you want the cheaper token bill.
Agentic
+3.8 difference
Composer 2.5
Kimi K2.6
$0.5 / $2.5
$0.95 / $4
N/A
N/A
N/A
N/A
200K
256K
Pick Kimi K2.6 if you want the stronger benchmark profile. Composer 2.5 only becomes the better choice if you want the cheaper token bill.
Kimi K2.6 has the cleaner provisional overall profile here, landing at 85 versus 82. It is a real lead, but still close enough that category-level strengths matter more than the headline number.
Kimi K2.6's sharpest advantage is in agentic, where it averages 73.1 against 69.3. The single biggest benchmark swing on the page is Terminal-Bench 2.0, 69.3% to 66.7%.
Kimi K2.6 is also the more expensive model on tokens at $0.95 input / $4.00 output per 1M tokens, versus $0.50 input / $2.50 output per 1M tokens for Composer 2.5. Kimi K2.6 gives you the larger context window at 256K, compared with 200K for Composer 2.5.
Kimi K2.6 is ahead on BenchLM's provisional leaderboard, 85 to 82. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 69.3% and 66.7%.
Kimi K2.6 has the edge for agentic tasks in this comparison, averaging 73.1 versus 69.3. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Estimates at 50,000 req/day · 1000 tokens/req average.
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