Head-to-head comparison across 0benchmark categories. Overall scores shown here use BenchLM's provisional ranking lane.
Gemini 3.5 Flash
88
GPT-5.2-Codex
77
Verified leaderboard positions: Gemini 3.5 Flash #7 · GPT-5.2-Codex unranked
Benchmark data for Gemini 3.5 Flash and GPT-5.2-Codex is coming soon on BenchLM.
Gemini 3.5 Flash
GPT-5.2-Codex
$1.5 / $9
$1.75 / $14
284.2 t/s
123 t/s
18.55s
87.34s
1M
400K
Benchmark data for Gemini 3.5 Flash and GPT-5.2-Codex 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-5.2-Codex is priced at $1.75 input / $14.00 output per 1M tokens, versus $1.50 input / $9.00 output per 1M tokens for Gemini 3.5 Flash. Gemini 3.5 Flash has the larger context window at 1M, compared with 400K for GPT-5.2-Codex.
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.
Gemini 3.5 Flash: $1.50 input / $9.00 output per 1M tokens GPT-5.2-Codex: $1.75 input / $14.00 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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