OpenAI Proprietary Released Nov 19, 2025 Updated
GPT-5.1 Codex
ToolsGuide Scores, rankings, test results and price.
Model summary
- Coding #116 / 147
252 / 1,000
ToolsGuide Score· votes 242, tests 268
- Price per 1M tokens
No listed price
Summary
GPT-5.1 Codex is OpenAI's model, released Nov 19, 2025. It's ranked in 1 category and does best at coding: #116 of 147, with a ToolsGuide Score of 252 against a median of 316.
It has published results on 3 tests and has the top score on 1 of them, including SWE-Lancer.
Specifications
- Creator
- OpenAI
- Licence
- Proprietary
- Released
- Nov 19, 2025
- Context window
- –
- Input price
- –
- Output price
- –
- Tests reported
- 3
- Settings ranked
- GPT-5.1-Codex
Model comparison
Against the ten best coding models.
Coding score
ToolsGuide Score out of 1,000 · Higher is better
Input price
USD per 1M input tokens · Lower is better
Leaderboards
Where GPT-5.1 Codex sits among the top 20 in each category.
Coding
#116 of 147 · ToolsGuide Score out of 1,000, where 1,000 is a flawless model
By task
Scored from votes on each kind of prompt alone, on the same 1,000-point scale.
Coding
GPT-5.1-Codex · hover a bar for its rank
Test results
Every test GPT-5.1 Codex has a published result on, out of 100%, with its rank among the models that took it.
SWE-Bench Verified
#46 / 120Fixing real bugs in real GitHub projects, checked by the projects' own tests.
73.7%
Self-reported
Terminal-Bench 2.0
#32 / 54Getting real work done in a command-line terminal.
52.8%
Self-reported
SWE-Lancer
#1 / 4A benchmark for evaluating large language models on real-world freelance software engineering tasks from Upwork. Contains over 1,400 tasks valued at $1 million USD total, ranging from $50 bug fixes to $32,000 feature implementations. Includes both independent engineering tasks graded via end-to-end tests and managerial tasks assessed against original engineering managers' choices.
66.3%
Self-reported