Codex
codexOpenRouter app page: openrouter.ai/apps/codex
Sightings observed Codex with 35 models in OpenRouter-published model-page evidence. The app was first observed by Sightings on ; first-observed dates record when Sightings first saw each pairing, not when usage began.
- Global rank
- #6
- public app rankings
- Tokens · yday
- 250.3B
- closed UTC day
- Models observed
- 35
- model pages expose top 5
- First observed
- 2026-01-10
- by Sightings
What it is
See which AI models Codex uses on OpenRouter, ranked by token usage. A coding agent that helps you build and ship with AI
OpenRouter listing ↗Models observed with this app
Early adopter — relationship first observed within 30 days of the model's OpenRouter listing. First-observed dates are when Sightings first saw the pairing, not the start of an app's model usage. Last observed is the latest recorded model-page evidence for each pairing. An observation does not establish continued or exclusive usage, or reveal the app’s full private infrastructure.
| Model | Tokens · latest | First observed | Last observed |
|---|---|---|---|
| openai/gpt-5.6-solopenai/gpt-5.6-sol | 684B | ||
| openai/gpt-6-solopenai/gpt-6-sol | 540B | ||
| openai/gpt-5.6-lunaopenai/gpt-5.6-luna | 501B | ||
| moonshotai/kimi-k3moonshotai/kimi-k3 | 231B | ||
| openai/gpt-6-luna-proopenai/gpt-6-luna-pro | 207B | ||
| openai/gpt-6.1-terraopenai/gpt-6.1-terra | 156B | ||
| meta/muse-spark-1.3-contributormeta/muse-spark-1.3-contributor | 155B | ||
| anthropic/claude-opus-5anthropic/claude-opus-5 | 98B | ||
| moonshotai/kimi-k3.1-promoonshotai/kimi-k3.1-pro | 91.1B | ||
| qwen/qwen3.8-27bqwen/qwen3.8-27b | 79.8B | ||
| x-ai/grok-4.7x-ai/grok-4.7 | 76.4B | ||
| openai/gpt-5.6-terraopenai/gpt-5.6-terra | 68.3B | ||
| openai/gpt-5.6-luna-proopenai/gpt-5.6-luna-pro | 57B | ||
| qwen/qwen3.8-maxqwen/qwen3.8-max | 48.8B | ||
| meta/muse-spark-1.2-contributormeta/muse-spark-1.2-contributor | 23.5B | ||
| qwen/qwen3.8-flashqwen/qwen3.8-flash | 22.6B | ||
| meta/muse-spark-1.3meta/muse-spark-1.3 | 20.2B | ||
| mistralai/mistral-large-4-0mistralai/mistral-large-4-0 | 13.2B | ||
| reflection/beam-1.0-501b-a23breflection/beam-1.0-501b-a23b | 10.2B | ||
| openai/gpt-6-astra-proopenai/gpt-6-astra-pro | 6.43B | ||
| openai/gpt-6.1-sol-proopenai/gpt-6.1-sol-pro | 5.85B | ||
| tencent/hy4-previewtencent/hy4-preview | 4.59B | ||
| z-ai/glm-5.3-primez-ai/glm-5.3-prime | 4.34B | ||
| openai/gpt-6-sol-proopenai/gpt-6-sol-pro | 2.82B | ||
| qwen/qwen3.8-omni-flashqwen/qwen3.8-omni-flash | 2.12B | ||
| meta/muse-wondermeta/muse-wonder | 1.46B | ||
| google/gemini-4-argongoogle/gemini-4-argon | 821M | ||
| qwen/qwen3.8-max-primeqwen/qwen3.8-max-prime | 596M | ||
| unbiased/paretounbiased/pareto | 305M | ||
| nex-agi/nex-n2.5-pronex-agi/nex-n2.5-pro | 206M | ||
| nvidia/nemotron-3.5-super-vlnvidia/nemotron-3.5-super-vl | 121M | ||
| sakana/fugu-ultra-v2sakana/fugu-ultra-v2 | 81.6M | ||
| openai/gpt-6-astraopenai/gpt-6-astra | 1.1T | ||
| openai/gpt-6-lunaopenai/gpt-6-luna | 4.74T | ||
| openai/gpt-6.1-solopenai/gpt-6.1-sol | 2.76T |