GPT-5.6 Luna
GPT-5.6 LunaAlternatives?
CheaperAgnes 2.5 Pro Beta+5%-67%$0.10 / $0.30Context: 1.05M → 1M
BetterHy3thinkingOpen+4%+360%$0.072Context: 1.05M → 256K+1
OpenKimi K3max+9%+12,723%$2.00Context: 1.05M → 1M+4Lower effortSame modellow-3%-37%$0.01CheaperHy3 previewthinkingOpensame-37%$0.18 / $0.60Context: 1.05M → 256K+2Agnes 2.5 Pro Beta+5%-67%$0.10 / $0.30Context: 1.05M → 1MHy3 previewthinkingOpensame-37%$0.18 / $0.60Context: 1.05M → 256K+2
Ling 3.0 Flash VLthinkingOpensame-80%$0.06 / $0.18Context: 1.05M → 262K
Gemma 4 31BthinkingOpensame-64%$0.10 / $0.34Context: 1.05M → 256KLing 3.0 FlashthinkingOpensame-80%$0.06 / $0.18Context: 1.05M → 262K+1Hy3thinkingOpen+4%+360%$0.072Context: 1.05M → 256K+1TInkling SmallthinkingOpen+4%+474%$0.089Context: 1.05M → 256K+1
Grok 4.3high+5%+1,217%$0.21Context: 1.05M → 1M
Qwen3.7 Plusthinking+5%+1,291%$0.22Context: 1.05M → 1MGPT-5.6 Sollow+5%+1,571%$0.26Kimi K3maxOpen+9%+12,723%$2.00Context: 1.05M → 1M+4Qwen3.8 2.4T A95BthinkingOpen+9%+13,717%$2.16Context: 1.05M → 262K+6
MiniMax M3thinkingOpen+8%+3,154%$0.51Context: 1.05M → 524K+2
DeepSeek V4 Pro 0813maxOpen+8%+4,221%$0.67Context: 1.05M → 1M+6Qwen3.8 FlashthinkingOpen+8%+2,286%$0.37Context: 1.05M → 262K+6GPT-6 Astramedium+9%+9,777%$1.54Monitoring can return HTTP 403+2GPT-5.6 Solmedium+8%+3,138%$0.50GPT-5.5medium+8%+5,681%$0.90Prompts with >272K input tokensGPT-5.3 Codexxhigh+7%—$1.75 / $14Context: 1.05M → 400K+1GPT-5.6 Terramedium+2%+1,076%$0.18Prompts with >272K input tokensGPT-5.2mediumsame—$1.75 / $14Context: 1.05M → 400KGPT-5.5 Instant (May 2026)-1%——Context: 1.05M → 400Ko3 Prothinking-2%—$20 / $80Context: 1.05M → 200KAll OpenAI models →Benchmarks
in Chat & KnowledgeFAQ
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 GPT-4.1 Nano?›
On GPQA Diamond, GPT-5.6 Luna scores 91.1 vs 51.2 — 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 Kimi K3.
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), Hy3 (better), Kimi K3 (open weights).