OpenAI
OpenAI's fastest and most cost-efficient GPT-5.6 tier for high-volume workloads. Luna is generally available through ChatGPT, Codex, and the API.
OpenRouter
Price record: 2026-10-08. Source: openrouter.
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70.4
Quality Score
1260
Arena ELO
Undisclosed
Parameters
1M
Context
This measures the amount of verifiable public evidence we have, not how capable the model is. A missing field means it has not been verified yet, not that its value is zero.
18 of 22 public signals
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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213.3K
Downloads
0
Likes
Jul 2026
Released
4/5 signals
4/4 signals
5/5 signals
2/4 signals
3/4 signals
Parameters
—
Training compute
Not reported
Dataset scale
Not reported
Base model
Not reported
Source-reported access: API access · Confident confidence
Gaps we are still tracking
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
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View sourcegpt-5.6-luna - GAIA
GAIA score 57.1 from t8m3-q6v9-j4r2
View sourceGPT-5.6: Frontier intelligence that scales with your ambition
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View sourceModels | OpenAI API
ChatGPT Start searching API Dashboard Try ChatGPT Home API Overview Get started with the OpenAI API Models Explore models and compare capabilities Agents Build persistent agents on hosted infrastructure Tools Connect models to tools and data Audio & voice Build speech and realtime voice experiences Production Deploy and scale your API integrations API reference Explore endpoints, parameters, and responses ChatGPT Sign in with ChatGPT Apps powered by your user's ChatGP
View source1260
ELO Score
1252 - 1268
95% Confidence
+/-8 points
10.4K
Battles
Oct 8, 2026
Last Updated