Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.2-Codex
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o3-pro
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Benchmark data for GPT-5.2-Codex and o3-pro is coming soon on BenchLM.
GPT-5.2-Codex
o3-pro
$2 / $8
$null / $null
123 t/s
27 t/s
87.34s
84.93s
400K
200K
Benchmark data for GPT-5.2-Codex and o3-pro is coming soon on BenchLM.
BenchLM does not have sourced benchmark coverage for GPT-5.2-Codex and o3-pro yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GPT-5.2-Codex has the larger context window at 400K, compared with 200K for o3-pro.
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.
GPT-5.2-Codex: $2.00 input / $8.00 output per 1M tokens o3-pro: Pricing unavailable Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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