OpenAI · Gpt 5 6 · active
GPT-5.6 Luna
GPT-5.6 Luna is OpenAI's API model for cost-sensitive, high-volume workloads.
openai/gpt-5.6-lunaThis page represents one immutable developer model ID. Serving endpoints, pricing, regions, quantizations, and service tiers attach separately and never create duplicate model records.
Provider availability
Serving endpoints and pricing
| Provider | Route model | Tier | Input | Output | Region | Observed | Source |
|---|---|---|---|---|---|---|---|
 OpenAIRoute-ready | gpt-5.6-luna | Standard | $0.20 | $1.20 | Unknown | Aug 28, 2026 | Provider-reported |
Technical specification
Capabilities
Version lineage
Explicit unknowns
- Release date
- Architecture
- Tokenizer
Comparable peers
Related model comparisons
Questions
GPT-5.6 Luna FAQs
What is GPT-5.6 Luna?+
GPT-5.6 Luna is OpenAI's API model for cost-sensitive, high-volume workloads. It is developed by OpenAI and its current sourced lifecycle status is active.
What inputs and outputs does GPT-5.6 Luna support?+
GPT-5.6 Luna's current record lists Text and Image as input and Text as output.
How much context does GPT-5.6 Luna support?+
The current record lists a 1,050,000-token context window and a maximum output of 128,000 tokens.
Is GPT-5.6 Luna available through an API?+
GPT-5.6 Luna is marked as API-available. The directly sourced provider records currently include OpenAI.
What capabilities and tasks does GPT-5.6 Luna support?+
GPT-5.6 Luna's recorded capabilities are chat, generation, reasoning, and tools. Its supported tasks are image and text.
Can GPT-5.6 Luna be self-hosted?+
GPT-5.6 Luna is not marked as an open-weight model. Self-hosting is marked as unsupported, with no license recorded.
Does GPT-5.6 Luna have related versions or aliases?+
No predecessor is recorded. No successor is recorded. Recorded aliases are gpt-5.6-luna.
Which models can GPT-5.6 Luna be compared with?+
The current compatible peer set includes MiniMax-M3, Claude Fable 5, Claude Opus 5, Claude Sonnet 5, and Qwen3.5-35B-A3B. Compatibility requires shared sourced modalities and tasks; it does not imply that one model is better. Browse model comparisons →
How current is the Model Markets record for GPT-5.6 Luna?+
GPT-5.6 Luna was last verified Aug 28, 2026 from OpenAI's primary source, “Models | OpenAI API.” The evidence is classified as official fact.
Primary evidence