OpenAI
OpenAI
Language model · United States ·May 2025

codex-1

Language Proprietary

About codex-1

codex-1 is an AI model developed by OpenAI, in the language category, released in 2025, made available as a proprietary (API-only) model.

On this page you'll find codex-1's full specifications. Review provider pricing and benchmark scores below, or compare codex-1 head-to-head with other language models.

→ More models by OpenAI → All language models → AI benchmarks leaderboard

Links

Announcement ↗

Community

Would you run codex-1 again?
No votes yet — be the first.
Did it run? — community reports by hardware

No reports yet. Own this model on some hardware? Be the first to confirm it runs.

Discussion

No comments yet. Start the discussion.

More models like codex-1

AI
DMind-1
 AI
COLLECTIVE-1
 AI
Cogito 1 series
 AI
Euler (Euler大模型)
· 2.5B
 AI
SmolLM-1.7B
· 1.7B
 AI
Llama-3-70B-Synthia-v3.5
· 70B

Frequently asked questions

What is codex-1? ▶

codex-1 is an AI model developed by OpenAI, in the language category, released in 2025. It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created codex-1? ▶

codex-1 was developed by OpenAI and released in 2025.

Is codex-1 open source or proprietary? ▶

codex-1 is a proprietary model. It is accessed through an API rather than by downloading the weights.

How much does codex-1 cost? ▶

Pricing for codex-1 depends on the provider. See the providers table on this page for the latest API rates.

How does codex-1 perform on benchmarks? ▶

Benchmark scores for codex-1 are listed on this page as they are published. You can compare it head-to-head with other models on the GenAIList compare tool.

No videos yet. Know a good one? Add it below.

Know a great video about codex-1?