GPT-5.1-Codex
Ranked 12 of 15 coding models by recommenders
Recommended as a strong coding model that people rate above Gemini 3 Pro for usable results. Critics note it is slow, unresponsive, and sometimes misdiagnoses bugs.
Recommended as a strong coding model that people rate above Gemini 3 Pro for usable results. Critics note it is slow, unresponsive, and sometimes misdiagnoses bugs.
13 people gave an opinion
- recommend it
- 10
- criticize it
- 3
- approval share
- 77%
Recommended in 3 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: not recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 10 people recommend itNeeds 10 or more, met.
- 3.3 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 3 of 13 monthsNeeds 4 or more, not met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Strong results versus rival models
“both Sonnet and GPT-5.1-Codex are both pretty effective”
Comment from 24 Nov 2025 in “Claude Opus 4.5” “GPT 5.1-codex is better than Gemini 3 Pro”
Comment from 18 Nov 2025 in “Gemini 3” “5.1 codex has been the best by far.”
Comment from 2 Dec 2025 in “OpenAI declares 'code red' as Google catches up in AI race” - Comment from 25 Nov 2025 in “Three Years from GPT-3 to Gemini 3”
Effective for coding tasks
“both Sonnet and GPT-5.1-Codex are both pretty effective”
Comment from 24 Nov 2025 in “Claude Opus 4.5” “GPT-5.1-Codex had a working version in a couple hours”
Comment from 23 Jan 2026 in “Why I Don't Have Fun With Claude Code” “5.1 codex has been the best by far.”
Comment from 2 Dec 2025 in “OpenAI declares 'code red' as Google catches up in AI race”
What people warn about
Each mark is one comment
Slow and unresponsive
“GPT 5.1/codex is excellent for brainstorming in the UX, but I found it too unresponsive and intransparent as a code assistant.”
Comment from 29 Nov 2025 in “Google CEO Pushes 'Vibe Coding' – But Real Developers Know It's Not Magic” “the speed was a big downer for me”
Comment from 25 Nov 2025 in “Claude Opus 4.5” Fixes sometimes questionable or wrong
“The compression ratio is not amazing, so not sure if it really worked, but at least it ran without errors.”
Comment from 3 Dec 2025 in “OpenAI declares 'code red' as Google catches up in AI race” “misdiagnosed the issue and attempted a weird fix despite my prompt”
Comment from 18 Dec 2025 in “GPT-5.2-Codex”
Other coding models people recommend
The four most recommended other coding models, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Cursor Composer | 214 | 79 | 73% | 12 | 1 mo11 owners | Approved |
| Qwen3-Coder | 165 | 49 | 77% | 12 | 2 mo7 owners | Approved |
| GPT-5.3-Codex | 135 | 78 | 63% | 11 | 2 mo4 owners | — |
| Meta Muse Glimmer 30B | 70 | 18 | 80% | 3 | — | — |
| GPT-5.1-CodexThis page | 10 | 3 | 77% | 3 | — | — |
What people said
All 13 comments that mention it, newest first. Each links to the original comment.
“GPT-5.1-Codex had a working version in a couple hours”
“misdiagnosed the issue and attempted a weird fix despite my prompt”
“it seemed to get tunnel visioned”
“The compression ratio is not amazing, so not sure if it really worked, but at least it ran without errors.”
“5.1 codex has been the best by far.”
“GPT 5.1/codex is excellent for brainstorming in the UX, but I found it too unresponsive and intransparent as a code assistant.”
“it's much better, I've found”
“the speed was a big downer for me”
“I use for a narrowly defined task where I can just fire and forget it”
“the voice assistant is able to call GPT 5.1 Codex to generate beautiful HTML elements”
“both Sonnet and GPT-5.1-Codex are both pretty effective”
“have a workflow that works well with the 5-hour/weekly limits”
“GPT 5.1-codex is better than Gemini 3 Pro”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.