OpenAI · proprietary

GPT-5.1 Codex

GPT-5.1 Codex by OpenAI appears in 1 source with Reasoning at 42.49. Best read for Code quality, LLM, Multimodal.

CreatorOpenAI

Release date2025-11-19

Knowledge cutoffNot published

ContextUnknown

Input priceUnknown

Output priceUnknown

Modalitytext + vision

CountryUS

Metrics

All source-backed metrics

Open in leaderboard

LLM Stats Rank75ranking · source_rank

Reasoning42.49reasoning · index_reasoning

Coding28.37coding · index_code

Tool calling16.65tool_calling · index_tool_calling

SWE-bench Verified73.7 %coding · swe_bench_verified_score

Code Arena729.31 %coding · coding_arena_score

Evidence

Citations and source overlap

LLM StatsPublic full LLM leaderboard advanced explorer snapshot, including ranking, benchmark indexes, pricing, speed, context, license, and model metadata.Retrieved 2026-06-01

FAQ

How should I read this profile?

Treat this as a source-backed model dossier, not an EvalKit-run verification. The public values are replicated from linked sources and kept source-scoped.

Is GPT-5.1 Codex verified by EvalKit?

No. EvalKit currently shows 0 verified rows until real run evidence exists.

Why can metrics disagree?

Different sources test different tasks, dates, prompts, and aggregation methods. EvalKit keeps those differences visible instead of merging them into a fake universal score.