Head-to-head comparison across 1benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude 4.1 Opus
51
Claude Haiku 4.5
56
Pick Claude Haiku 4.5 if you want the stronger benchmark profile. Claude 4.1 Opus only becomes the better choice if coding is the priority.
Coding
+1.2 difference
Claude 4.1 Opus
Claude Haiku 4.5
$15 / $75
$1 / $5
29 t/s
N/A
1.66s
N/A
200K
200K
Pick Claude Haiku 4.5 if you want the stronger benchmark profile. Claude 4.1 Opus only becomes the better choice if coding is the priority.
Claude Haiku 4.5 is clearly ahead on the provisional aggregate, 56 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4.1 Opus is also the more expensive model on tokens at $15.00 input / $75.00 output per 1M tokens, versus $1.00 input / $5.00 output per 1M tokens for Claude Haiku 4.5. That is roughly 15.0x on output cost alone.
Claude Haiku 4.5 is ahead on BenchLM's provisional leaderboard, 56 to 51. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 74.5% and 73.3%.
Claude 4.1 Opus has the edge for coding in this comparison, averaging 74.5 versus 73.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
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