Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude Opus 4.5
77
GPT-5 nano
--
Verified leaderboard positions: Claude Opus 4.5 #9 · GPT-5 nano unranked
Benchmark data for Claude Opus 4.5 and GPT-5 nano is coming soon on BenchLM.
Claude Opus 4.5
GPT-5 nano
$5 / $25
$0.05 / $0.4
46 t/s
137 t/s
1.01s
83.30s
200K
400K
Benchmark data for Claude Opus 4.5 and GPT-5 nano is coming soon on BenchLM.
BenchLM does not have sourced benchmark coverage for GPT-5 nano yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
Claude Opus 4.5 is priced at $5.00 input / $25.00 output per 1M tokens, versus $0.05 input / $0.40 output per 1M tokens for GPT-5 nano. GPT-5 nano has the larger context window at 400K, compared with 200K for Claude Opus 4.5.
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 nano: $0.05 input / $0.40 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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