GPT-5.6 Luna
GPT-5.6 LunaAlternatives?
CheaperLing 3.0 Flash VLthinkingOpenwins 80%-80%$0.06 / $0.18Context: 1.05M → 262KBetterGPT-6 Lunanon-thinkingwins 72%+15%$0.011Function calling only with none · Chat Completions+3
OpenQwen3.8 Flashthinkingwins 99%+3,687%$0.37Context: 1.05M → 262K+6CheaperLing 3.0 Flash FinthinkingOpenwins 78%-80%$0.06 / $0.18Context: 1.05M → 262K+1
BetterClaude Haiku 5.5lowwins 90%+149%$0.024Context: 1.05M → 1M+6Ling 3.0 Flash VLthinkingOpenwins 80%-80%$0.06 / $0.18Context: 1.05M → 262KLing 3.0 Flash FinthinkingOpenwins 78%-80%$0.06 / $0.18Context: 1.05M → 262K+1GPT-6 Lunalowsame-54%$0.005Function calling only with none · Chat Completions+3GPT-6 Lunanon-thinkingwins 72%+15%$0.011Function calling only with none · Chat Completions+3Claude Haiku 5.5lowwins 90%+149%$0.024Context: 1.05M → 1M+6Ling 3.0 FlashthinkingOpenwins 58%+182%$0.028Context: 1.05M → 262K+1GPT-6.1 Terralowwins 84%+456%$0.055
MiMo v2.6 FlashthinkingOpenwins 99%+535%$0.062Context: 1.05M → 1M+4Qwen3.8 FlashthinkingOpenwins 99%+3,687%$0.37Context: 1.05M → 262K+6
DeepSeek V4.1 Flash 1017maxOpenwins 99%+2,567%$0.26Context: 1.05M → 1M+5MiMo v2.6 ProthinkingOpenwins 99%+1,256%$0.13Context: 1.05M → 1M+4
GLM 5.3maxOpenwins 99%+20,309%$2.01Context: 1.05M → 1M+5
Kimi K3maxOpenwins 99%+20,253%$2.00Context: 1.05M → 1M+4GPT-6 Astralowwins 95%+8,219%$0.82Monitoring can return HTTP 403+2GPT-6.1 Sollowwins 90%+1,231%$0.13Remove unsupported parameters+5GPT-5.5 Instant (June 2026)wins 88%+5,689%$0.57Context: 1.05M → 400KGPT-5.6 Sollowwins 85%+2,552%$0.26GPT-6.1 Terralowwins 84%+456%$0.055GPT-5.6 Terralowwins 83%+1,370%$0.14Prompts with >272K input tokensGPT-5.5mediumwins 82%+7,691%$0.77Prompts with >272K input tokensGPT-6 Sollowwins 70%+1,251%$0.13All OpenAI models →History
2 versionsBenchmarks
in Agents & Tool UseFAQ
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 $0.01 at low 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?›
#127 of 336 in Chat & Knowledge, #76 of 134 in Coding, #75 of 135 in Agents & Tool Use, #68 of 197 in Writing & Language, #59 of 125 in Vision & Documents.
Is GPT-5.6 Luna better than Claude Sonnet 5?›
On AA-Briefcase 1.1 · Elo, GPT-5.6 Luna scores 1,339.2 vs 1,356.6 — lower. It is 100% 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 Qwen3.8 Flash.
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), Qwen3.8 Flash (open weights).