GPT-5.6 Luna
GPT-5.6 LunaAlternatives?
CheaperAgnes 2.5 Pro Beta+4%-67%$0.10 / $0.30Context: 1.05M → 1MBetterGPT-6 Lunamedium+9%+12%$0.017Function calling only with none · Chat Completions+3
OpenMiMo v2.6 Prothinking+30%+754%$0.13Context: 1.05M → 1M+4Lower effortSame modellowsame-37%$0.01
CheaperGemma 4 31BthinkingOpen-3%-64%$0.10 / $0.34Context: 1.05M → 256KAgnes 2.5 Pro Beta+4%-67%$0.10 / $0.30Context: 1.05M → 1MGPT-6 Lunalowsame-71%$0.005Function calling only with none · Chat Completions+3Gemma 4 31BthinkingOpen-3%-64%$0.10 / $0.34Context: 1.05M → 256K
Ling 3.0 Flash VLthinkingOpen-5%-80%$0.06 / $0.18Context: 1.05M → 262KLing 3.0 Flash FinthinkingOpen-9%-80%$0.06 / $0.18Context: 1.05M → 262K+1GPT-6 Lunamedium+9%+12%$0.017Function calling only with none · Chat Completions+3
Claude Haiku 5.5low+5%+57%$0.024Context: 1.05M → 1M+6MiMo v2.5 ProthinkingOpen+8%+247%$0.054Context: 1.05M → 1M+1MiMo v2.6 FlashthinkingOpen+10%+300%$0.062Context: 1.05M → 1M+4TInkling SmallthinkingOpen+6%+474%$0.089Context: 1.05M → 256K+1MiMo v2.6 ProthinkingOpen+30%+754%$0.13Context: 1.05M → 1M+4
Kimi K3maxOpen+27%+12,723%$2.00Context: 1.05M → 1M+4
GLM 5.3maxOpen+26%+12,758%$2.01Context: 1.05M → 1M+5
Step 5 PreviewthinkingOpen+26%+6,480%$1.03Context: 1.05M → 1M+3
Muse Spark OpenxhighOpen+25%+5,308%$0.84Context: 1.05M → 1M+2GPT-5.6 Solmedium+23%+3,138%$0.50GPT-5.5medium+17%+5,681%$0.90Prompts with >272K input tokensGPT-6 Astramedium+16%+9,777%$1.54Monitoring can return HTTP 403+2GPT-6 Solmedium+15%+1,485%$0.25GPT-6.1 Solmedium+14%+1,270%$0.21Remove unsupported parameters+5GPT-5.5 Instant (June 2026)+12%+4,333%$0.69Context: 1.05M → 400KGPT-5.4 Minixhigh+11%+2,768%$0.45Context: 1.05M → 400KGPT-6 Lunamedium+9%+12%$0.017Function calling only with none · Chat Completions+3All OpenAI models →History
2 versionsBenchmarks
in CodingFAQ
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 $0.016 at medium 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?›
#98 of 334 in Chat & Knowledge, #62 of 132 in Coding, #55 of 133 in Agents & Tool Use, #56 of 195 in Writing & Language, #41 of 124 in Vision & Documents. Strongest at: Science.
Is GPT-5.6 Luna better than Qwen3.8 2.4T A95B?›
On SciCode, GPT-5.6 Luna scores 53.6 vs 54.1 — about the same. It is 99% cheaper per task.
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 MiMo v2.6 Pro.
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?›
Agnes 2.5 Pro Beta (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).