Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
GPT-5.3 Codex
86
GPT-5 (medium)
70
Benchmark data for GPT-5.3 Codex and GPT-5 (medium) is coming soon on BenchLM.
GPT-5.3 Codex
GPT-5 (medium)
$1.75 / $14
$null / $null
79 t/s
83 t/s
88.26s
36.28s
400K
128K
Benchmark data for GPT-5.3 Codex and GPT-5 (medium) 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.
GPT-5.3 Codex has the larger context window at 400K, compared with 128K for GPT-5 (medium).
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-5.3 Codex: $1.75 input / $14.00 output per 1M tokens GPT-5 (medium): Pricing unavailable Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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