Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
77
GPT-5.1
79
Verified leaderboard positions: Claude Opus 4.5 #9 · GPT-5.1 unranked
Benchmark data for Claude Opus 4.5 and GPT-5.1 is coming soon on BenchLM.
Claude Opus 4.5
GPT-5.1
$5 / $25
$1.25 / $10
46 t/s
111 t/s
1.01s
57.47s
200K
200K
Benchmark data for Claude Opus 4.5 and GPT-5.1 is coming soon on BenchLM.
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Claude Opus 4.5 is priced at $5.00 input / $25.00 output per 1M tokens, versus $1.25 input / $10.00 output per 1M tokens for GPT-5.1.
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
Claude Opus 4.5: $5.00 input / $25.00 output per 1M tokens GPT-5.1: $1.25 input / $10.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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