OpenAI model product
GPT-5.6-Luna
6 family, designed for cost-sensitive, high-volume workloads.
Updated Aug 12, 2026. Default version: GPT-5.6 Luna
LLMBoard score76.4GPT-5.6 Luna
Coverage100%44 benchmark families
Context window1.1MTokens
Official input price$0.20OpenAI API
GPT-5.6-Luna Specifications
Technical details for the model's default version.
- Version
- GPT-5.6 Luna
- Released
- Jul 9, 2026
- Knowledge cutoff
- Feb 16, 2026
- Parameters
- N/A
- Context window
- 1.1M
- Max output
- 128K
- Inputs
- image, pdf, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
GPT-5.6-Luna Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
GPT-5.6-Luna Benchmark Results
Benchmark scores for GPT-5.6 Luna.
GPT-5.6-Luna Arena Results
Preference and agent-evaluation results for the default version.
| agent tool hallucination | overall | 1 | 0.0 | N/A | 475.3K | |
| agent bash recovery steps | overall | 9 | 0.1 | N/A | 11.8K | |
| agent praise complaint | overall | 15 | 0.1 | N/A | 2.2K | |
| agent | overall | 17 | 0.0 | N/A | 504.8K | |
| document style control | overall | 17 | 1466.7 | 1,888 | N/A | |
| document | overall | 18 | 1462.3 | 1,888 | N/A | |
| agent steerability | overall | 21 | 0.0 | N/A | 9.4K | |
| agent task outcome explicit | overall | 24 | 0.0 | N/A | 6.1K | |
| webdev | overall | 24 | 1519.2 | 4,662 | N/A | |
| text factuality | overall | 40 | 1455.3 | 15,793 | N/A | |
| vision style control | overall | 40 | 1249.3 | 3,259 | N/A | |
| vision | overall | 45 | 1251.5 | 3,259 | N/A | |
| text style control | overall | 59 | 1450.9 | 15,825 | N/A | |
| text | overall | 79 | 1428.4 | 15,825 | N/A |
GPT-5.6-Luna Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- $0.20 input, $1.2 output per 1M
- Official provider
- OpenAI
- Lowest third-party
- From $0.10 input, $0.60 output per 1M via OpenCode Go
- Tracked offerings
- 31
| Kenari | gpt-5-6-luna | global | N/A | N/A | 1.1M | |
| OpenCode Go | gpt-5.6-luna | global | $0.10 | $0.60 | 1.1M | |
| NanoGPT | openai/gpt-5.6-luna | global | $0.10 | $0.60 | 1.1M | |
| OpenRouter | openai/gpt-5.6-luna | global | $0.10 | $0.60 | 1.1M | |
| Impossibl | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| CrossModel | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 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 | |
| Ofox | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| Kilo Gateway | openai/gpt-5.6-luna-pro | global | $0.20 | $1.2 | 1.1M | |
| Kilo Gateway | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| Merge Gateway | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| Vercel AI Gateway | openai/gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| OpenAI | gpt-5.6-luna | global | $0.20 | $1.2 | 1.1M | |
| Amazon Bedrock | openai.gpt-5.6-luna | global | $0.22 | $1.32 | 1.1M | |
| Venice AI | openai-gpt-56-luna | global | $0.2667 | $1.6 | 1M | |
| routing.run | gpt-5.6-luna | global | $0.70 | $4.2 | 1M | |
| Vivgrid | gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Neon | 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 | |
| ZenMux | openai/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 | |
| Cloudflare AI Gateway | openai/gpt-5.6-luna | global | $1 | $6 | 1.1M | |
| Databricks | databricks-gpt-5-6-luna | global | $1 | $6 | 400K | |
| 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.
GPT-5.6-Luna Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| GPT-5.6 Luna | 76.4 | N/A | 1.1M | 128K | No | Proprietary |
What is GPT-5.6-Luna?
Key information about GPT-5.6-Luna and its available data.
6 family, designed for cost-sensitive, high-volume workloads. 05M-token context window.
Data as of 2026-08-11.
GPT-5.6-Luna vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
Models similar to GPT-5.6-Luna
Recommendations prioritize the same model type and family, then the closest LLMBoard score.
OP
GPT-5.5-Pro
OpenAI
OP
GPT-5.4
OpenAI
OP
GPT-5.2-Pro
OpenAI
OP
GPT-5.2
OpenAI
OP
GPT-5.5
OpenAI
OP
GPT-5.6-Terra
OpenAI
FAQ
Common questions about GPT-5.6-Luna.
When was GPT-5.6-Luna released?
GPT-5.6-Luna's default version was released on Jul 9, 2026.
How much does GPT-5.6-Luna cost?
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.
Who created GPT-5.6-Luna?
GPT-5.6-Luna was created by OpenAI.
What is the context window for GPT-5.6-Luna?
The default version has a 1.1M token context window.
Is GPT-5.6-Luna open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer GPT-5.6-Luna?
31 provider offerings are linked to the default version.
What models should I compare GPT-5.6-Luna with?
Nearby ranked alternatives include DeepSeek-V4-Flash, Gemini 3.1 Pro, GPT-5.4.