GPT-5.6 Luna
GPT-5.6 LunaAlternatives?
CheaperLing 3.0 Flash VLthinkingOpen+2%-80%$0.06 / $0.18Context: 1.05M → 262KBetterGPT-6 Lunaxhigh+3%-4%$0.042Function calling only with none · Chat Completions+3
OpenMuse Spark Openxhigh+4%+1,818%$0.84Context: 1.05M → 1M+2Lower effortSame modelmedium-2%-65%$0.016
CheaperAgnes 2.5 Pro Beta-3%-67%$0.10 / $0.30Context: 1.05M → 1MLing 3.0 Flash VLthinkingOpen+2%-80%$0.06 / $0.18Context: 1.05M → 262KGPT-6 Lunamediumsame-60%$0.017Function calling only with none · Chat Completions+3Agnes 2.5 Pro Beta-3%-67%$0.10 / $0.30Context: 1.05M → 1M
MiMo v2.5thinkingOpen-3%-57%$0.019Context: 1.05M → 1M
Gemma 4 31BthinkingOpen-5%-64%$0.10 / $0.34Context: 1.05M → 256KGPT-6 Lunaxhigh+3%-4%$0.042Function calling only with none · Chat Completions+3GPT-6.1 Sollow+7%+197%$0.13Remove unsupported parameters+5GPT-6 Sollow+3%+202%$0.13
Qwen3.7 Plusthinking+4%+393%$0.22Context: 1.05M → 1MGPT-5.6 Sollow+4%+493%$0.26Muse Spark OpenxhighOpen+4%+1,818%$0.84Context: 1.05M → 1M+2
DeepSeek V4.1 Flash 1017maxOpen+4%+496%$0.26Context: 1.05M → 1M+5
Kimi K3maxOpen+4%+4,448%$2.00Context: 1.05M → 1M+4Qwen3.8 FlashthinkingOpen+3%+746%$0.37Context: 1.05M → 262K+6Kimi K2.6thinkingOpen+2%+1,718%$0.80Context: 1.05M → 256KGPT-6 Astrahigh+11%+3,823%$1.73Monitoring can return HTTP 403+2GPT-6.1 Solhigh+9%+626%$0.32Remove unsupported parameters+5GPT-6 Solhigh+6%+748%$0.37GPT-5.6 Solhigh+6%+1,737%$0.81GPT-5.5high+5%+3,404%$1.54Prompts with >272K input tokensGPT-5.6 Terrahigh+2%+668%$0.34Prompts with >272K input tokensGPT-5.3 Codexxhighsame—$1.75 / $14Context: 1.05M → 400K+1GPT-6 Lunahighsame-34%$0.029Function calling only with none · Chat Completions+3All OpenAI models →History
2 versionsFAQ
How much does GPT-5.6 Luna cost?›
$0.20 per 1M input tokens and $1.20 per 1M output tokens; cached input $0.02 per 1M. A typical benchmark task costs about $0.044 at high effort.
Is GPT-5.6 Luna free to use?›
There is no free API; the cheapest paid price is $0.20 per 1M input tokens.
How good is GPT-5.6 Luna, and what is it best at?›
#71 of 334 in Chat & Knowledge, #48 of 132 in Coding, #47 of 133 in Agents & Tool Use, #56 of 195 in Writing & Language, #35 of 124 in Vision & Documents. Strongest at: Reasoning, Science, Long context.
Is GPT-5.6 Luna better than GPT-4.1 Nano?›
On MMMU-Pro (vision), GPT-5.6 Luna scores 78.6 vs 40.1 — higher.
How can I use GPT-5.6 Luna?›
Through the API of Amazon Bedrock, Azure, OpenAI.
What is the context window of GPT-5.6 Luna?›
1.05M tokens, with up to 128K output tokens.
When was GPT-5.6 Luna released? Is there a newer version?›
Released 2026-07-09. It has been superseded by GPT-6 Luna.
Is GPT-5.6 Luna open source?›
No, GPT-5.6 Luna is a closed model available through an API. The closest open-weights option here is Muse Spark Open.
Can GPT-5.6 Luna read images?›
It accepts text and images, PDF files as input.
What is GPT-5.6 Luna?›
GPT-5.6 Luna is a closed language model from OpenAI, released Jul 2026, the successor to GPT-4.1 Nano.
What are the best alternatives to GPT-5.6 Luna?›
Ling 3.0 Flash VL (cheaper), GPT-6 Luna (better), Muse Spark Open (open weights).