LOADING DATASHEET
GROUNDED IN REAL HUMAN CONVERSATIONSYOUR BENCH
GPT 5.1 Codex
by OpenAI
CLOSEDHOSTEDAPILONG CONTEXTPAIDREASONING
RANKED #54 OF 228 ASSISTANTS · OVERALL #93 OF 6,618 · VIBE SCORE 6.3 · 322 VOICES
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
HAPPY9.2
14 mentions
SAD5.8
16 mentions
VIBE TRAJECTORY
26 weeks · 13 voices
TOO QUIET
Not enough weekly voices to call a trend yet.
HOW TO USE IT
Closed model. OpenAI hosts it, so you use it through an app or an API.
PREFER OPEN SOURCE? THE CROWD HAS PICKS
GPT 5.1 Codex is closed, so you rent it. These open-weight models can genuinely stand in for it. Download once, own forever.
- OPEN WEIGHTS7.5
Qwen3.8 27BAlibabaGreat local open model for daily coding tasks on consumer hardware.💻 STRONG AT CODE🪶 RUNS ON LESS🔒 PRIVATE & OFFLINE5.7k VOICESMATCH★★★ - OPEN WEIGHTS7Qwen3.8 2.4T A95BAlibabaTop tier open MoE performance for complex programming workflows.🏆 NEAR-PEER QUALITY💻 STRONG AT CODE💸 COST EFFICIENT923 VOICESMATCH★★★
- OPEN WEIGHTS6.9
Kimi K3MoonshotExcellent reasoning and long context capabilities for developer tasks.💻 STRONG AT CODE🏆 NEAR-PEER QUALITY❤️ CROWD FAVORITE1.7k VOICESMATCH★★★
WHAT THE INTERNET SAYS
People are mostly frustrated with GPT 5.1 Codex right now. Biggest praise: help with code. Biggest gripe: working when you need it.
293 POSTS · 29 COMMENTS · GITHUB · REDDIT · BLOG · LEMMY
PEOPLE LOVE
- Popular for coding help (4 mentions)
PEOPLE COMPLAIN ABOUT
- Outages, errors, or limits get in the way (4 mentions)
- People find it expensive (3 mentions)
- Sometimes makes things up (3 mentions)
TOPIC BY TOPIC
- Help with codeMOSTLY POSITIVE
4 thumbs up · 3 thumbs down
- PriceMIXED FEELINGS
2 thumbs up · 3 thumbs down
- Working when you need itA SORE SPOT
0 thumbs up · 4 thumbs down
- Getting facts rightA SORE SPOT
0 thumbs up · 3 thumbs down
IN THEIR OWN WORDS
- FROM REDDIT >
“GPT 5.1 Codex at its best.”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for GPT 5.1 Codex.
Gemini 3.7 Flash
Grok 4.6> SOURCES (12)
- REDDIT · 2025-11-13 · 5107 UPVOTESThank you, GPT 5.1...
Thank you, GPT 5.1...
- REDDIT · 2025-11-13 · 1625 UPVOTESGPT-5.1 is definitely something
GPT-5.1 is definitely something
- REDDIT · 2025-11-27 · 652 UPVOTESARC-AGI 2 is Solved
ARC-AGI 2 is Solved
- REDDIT · 2025-11-19 · 652 UPVOTESGPT-5.1 Pro is rolling out today to all Pro users.
GPT-5.1 Pro is rolling out today to all Pro users.
- REDDIT · 2025-11-22 · 499 UPVOTESGemini 3 Pro solves IMO 2025 P6 with some prompting (no hints or tools involved). Doesn't look like training data contamination since…
Gemini 3 Pro solves IMO 2025 P6 with some prompting (no hints or tools involved). Doesn't look like training data contamination since GPT-5.1 High, OpenAI's unreleased internal model, and even AlphaEvolve all fail on it.
- REDDIT · 2025-11-21 · 379 UPVOTESGPT-5 naming is getting beyond absurd
GPT-5 naming is getting beyond absurd
- REDDIT · 2025-11-25 · 370 UPVOTESIlya is CORRECT - Benchmarks are broken AF because major labs are training to them. Gemini 3.0 real world performance is not great compared…
Ilya is CORRECT - Benchmarks are broken AF because major labs are training to them. Gemini 3.0 real world performance is not great compared to GPT-5.1 and that's a FACT ---- I propose a solution for fairness ratings of real world model grading.
- REDDIT · 2025-11-13 · 364 UPVOTESGPT 5.1 Benchmarks
GPT 5.1 Benchmarks
- REDDIT · 2025-11-13 · 357 UPVOTESGPT 5.1 is now available for Perplexity Pro and Max subscribers
GPT 5.1 is now available for Perplexity Pro and Max subscribers
- REDDIT · 2025-11-17 · 309 UPVOTESGPT-5.1-Codex has made a substantial jump on Terminal-Bench 2 (+7.7%)
GPT-5.1-Codex has made a substantial jump on Terminal-Bench 2 (+7.7%)
- REDDIT · 2025-11-14 · 194 UPVOTESSimpleBench: GPT 5.1 (high) scores slighly lower than 5 (high)
SimpleBench: GPT 5.1 (high) scores slighly lower than 5 (high)
- REDDIT · 2025-11-21 · 183 UPVOTESBeen using chat gpt for almost a year now as well as Gemini for about 3 months. Today one small little detail, may be an indication that…
Been using chat gpt for almost a year now as well as Gemini for about 3 months. Today one small little detail, may be an indication that Gemini 3.1 is Chat-Gpt 5's superior by far.