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Models · OpenAI · Out sinceReleased 14 Jan 2026

GPT-5.2-Codex

Available on OpenRouterOn OpenRouterAvailable nowGenerally availableClosed (can't be downloaded)Proprietary

GPT-5.2-Codex is made by OpenAI. We don't have enough test results yet to rank it. It's mid-priced to use.

Auto-created from OpenRouter catalog; verify details.

Writing & creativity
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Research & analysis
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Coding
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Price
Mid-priced$1.75 / $14
Price per 1M (blended)Blended / 1M
$4.81
MemoryContext
400K
Longest answerMax output
—
Test resultsResults
5 (5 independent5 indep.)
Out sinceReleased
14 Jan 2026
Made byVendor
OpenAI
UnderstandsInputs
—

Scores are out of 100 for each area, compared with every model we track; “#” is its rank. Context is how much text it can read at once (1M is roughly 700,000 words). Blended price mixes the cost of what you send and what it writes back.

Thinking levels

Reasoning settings

You can't choose how long this one thinks.

No adjustable reasoning setting listed.

Read more

Links

Using it through OpenRouter

On OpenRouter

OpenRouter is a service that gives access to many AI models in one place. This model is listed there as openai/gpt-5.2-codex.

Route it as openai/gpt-5.2-codex at $1.75 in / $14 out per 1M tokens, 400K context. Listed since 14 Jan 2026.

include_reasoningmax_completion_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools

Every test result

Every result

All the numbers,with where they came from.

Every result we've found for this model, with who measured it and a link to where we read it.

All raw rows (vendor and independent kept separate), with setting label, source, date, harness and notes.

All results for this model
NotesNotes
LiveCodeBench88.0%DefaultIndependent testIndependentVals.ai ↗1 Sep 2026—±0.942 stderr; $0.117/test
SWE-bench Multilingual66.3%DefaultIndependent testIndependentSWE-bench ↗20 Feb 2026mini-SWE-agent 2.0.0Official SWE-bench bash-only (mini-SWE-agent) run; data file https://raw.githubusercontent.com/SWE-bench/swe-bench.github.io/master/data/leaderboards.json; leaderboard not updated since 2026-02-26
SWE-Bench Pro (private/commercial set)27.7%DefaultGPT 5.2 CodexIndependent testIndependentScale AI SEAL ↗1 Oct 2026—rank 5 (Scale rank accounts for CI); ±5.09; entry added 2026-01-12
SWE-Bench Pro (public, v1)41.0%Defaultgpt-5.2-codexIndependent testIndependentScale AI SEAL ↗1 Oct 2026—rank 10 (Scale rank accounts for CI); ±3.57; entry added 2026-01-27
SWE-bench Verified (bash-only, mini-SWE-agent)72.8%DefaultIndependent testIndependentSWE-bench ↗19 Feb 2026mini-SWE-agent 2.0.0Official SWE-bench bash-only (mini-SWE-agent) run; data file https://raw.githubusercontent.com/SWE-bench/swe-bench.github.io/master/data/leaderboards.json; leaderboard not updated since 2026-02-26