The linked official OpenAI catalog lists the exact model ID gpt-5.6-luna as currently available; account, region, product, and endpoint access can still vary.
OpenGPT catalog guidance
Best for
Latency-sensitive or high-volume tasks where responsiveness matters.
Managed reasoning, coding, multimodal, and tool-connected workflows.
Strengths
The fast role prioritizes responsiveness and throughput within the family.
GPT-5.6 Luna is provider-listed as the fast release in its model family.
Weaknesses
General availability does not guarantee identical capabilities across every product, account, or endpoint.
Verify exact capabilities, pricing, latency, context limits, tools, and regional availability with the provider.
These points are OpenGPT decision guidance derived from provider-confirmed family, catalog role, and lifecycle information. They are not measured results for this exact version. Verify capabilities, pricing, latency, context limits, tools, and regional availability with the provider.
Published ranking signals · No comparable public ranking signal is currently linked to this exact version.
Model family
Family-level guidance
The following summary describes the broader model family from official positioning. It is not a measured result for this exact version.
GL
Model family: GPT
GPT
A broad proprietary model family with a mature API and tool ecosystem.
Everyday workSolve problems or codeUse current information or toolsRead, analyze, or writeWork with images or audio
Covers general, coding, vision, and tool-based workflows. Straightforward managed API with extensive developer tooling.
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Family limitations
Closed weights and provider-controlled deployment. Cost, latency, and limits vary by exact model and service tier.
Verify the exact version before choosing: capabilities, price, context limits, latency, tools, and regional availability can differ by provider access path.
Published ranking signals
Curated comparisons
Stable comparison pages that preserve exact model IDs, source scales, missing data, and evidence dates.
2
Provider documentation and OpenGPT catalog classification are labeled separately.
Version differences
Compare two catalog model IDs from one model family. Provider IDs, sources and published ranking signals are shown; OpenGPT catalog classification is labeled separately.
GPT-5.6 Luna / GPT-5.6 Sol
Version differences
GPT-5.6 Luna
GPT-5.6 Sol
Official model ID
gpt-5.6-luna
gpt-5.6-sol
Directory status
General availability
General availability
OpenGPT catalog role
Fast
Flagship
Current public ranking signals
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User preference 18 · 1481 · Intelligence index 5 · 61 · Objective tasks 2 · 81.7
No verified feature-difference data is available. OpenGPT does not infer speed, price, context length, or quality.
OFFICIAL MODEL PROFILE
Official resources
These links go to the provider. Availability and the selectable version can vary by product, account, region, and endpoint.
OFFICIAL MODEL PROFILE
Published ranking signals
Each row preserves one published metric and source. Scores from different sources are not interchangeable.
0
No comparable public ranking signal is currently linked to this exact version.
Missing data is not a zero score and does not mean the model is weak. It means this edition cannot safely attach a published result to the exact official version.
OpenGPTAI decision intelligence