OpenAI model product
GPT-5.6 Luna is the fastest and most cost-efficient tier of OpenAI's GPT-5.6 family, designed for cost-sensitive, high-volume workloads. It brings strong capability at OpenAI's lowest GPT-5.6 price, supports max reasoning effort, and has a 1.05M-token context window.
Updated Aug 10, 2026. Default version: GPT-5.6 Luna
Structured fields from the published default version.
This profile uses the latest version under this unique model that has a calculated LLMBoard score. Arena and price are excluded.
Published benchmark records for the scored version GPT-5.6 Luna.
Preference and agent-evaluation signals from published Arena datasets.
The default version has no published Arena rows, or its source alias has not been resolved.
Official vendor API PAYG pricing is summarized first. The table then lists individual provider offerings without treating their minimum as the official price.
| OpenCode Go | gpt-5.6-luna | global | $0.10 | $0.60 | 1.1M | |
| LLM Gateway | gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| OpenCode Zen | gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| GitHub Copilot | gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| OpenAI | gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| routing.run | gpt-5.6-luna | global | $0.70 | $4.2 | 1M | |
| Vivgrid | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Pioneer | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| AI-ROUTER | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Abacus | gpt-5.6-luna | global | $1 | $6 | 1M | |
| Azure Cognitive Services | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Azure | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| AIHubMix | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Cortecs | gpt-5.6-luna | global | $1.1 | $6.6 | 1.1M |
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
All published versions linked to this unique model. The score columns identify the version used by the current overall ranking.
| GPT-5.6 Luna | 77.2 | N/A | 1.1M | 128K | No | Proprietary |
A concise description based on the published model registry.
GPT-5.6 Luna is the fastest and most cost-efficient tier of OpenAI's GPT-5.6 family, designed for cost-sensitive, high-volume workloads. It brings strong capability at OpenAI's lowest GPT-5.6 price, supports max reasoning effort, and has a 1.05M-token context window.
Use the benchmark, Arena and pricing sections above as separate evidence. A missing field means the current data snapshot does not support that claim.
Data snapshot: 2026-08-07. Editorial model content is not available in the backend.
Open a comparison with the three ranked models immediately above and below this model.
Recommendations prioritize the same model type and family, then the closest published LLMBoard score.
Common questions about GPT-5.6-Luna.
GPT-5.6-Luna's default version was released on Jul 9, 2026.
GPT-5.6-Luna's official API price is $0.20 per million input tokens and $1.2 per million output tokens via OpenAI. The lowest tracked third-party offer starts at $0.10 input and $0.60 output via OpenCode Go.
GPT-5.6-Luna is published under OpenAI in the model registry.
The default version has a 1.1M token context window.
No. The default version is not marked as having publicly available weights.
14 published provider offerings are linked to the default version.
Nearby ranked alternatives include DeepSeek-V4-Pro, Claude Opus 4.7, Gemini 2.5 Pro.