Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Claude 3 Haiku
--
GPT-5.3 Codex
89
Benchmark data for Claude 3 Haiku and GPT-5.3 Codex is coming soon on BenchLM.
Claude 3 Haiku
GPT-5.3 Codex
$null / $null
$2.5 / $10
138 t/s
79 t/s
1.16s
88.26s
200K
400K
Benchmark data for Claude 3 Haiku and GPT-5.3 Codex is coming soon on BenchLM.
BenchLM does not have sourced benchmark coverage for Claude 3 Haiku yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.
GPT-5.3 Codex has the larger context window at 400K, compared with 200K for Claude 3 Haiku.
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 3 Haiku: Pricing unavailable GPT-5.3 Codex: $2.50 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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