GPT-5 Nano
GPT-5 NanoAlternatives?
BetterGPT-5.6 Lunalow×9.3+227%$0.01
OpenGLM 5.3 Flashmax×222.7+73%$0.28Defaults to max · Self-hosted+4BetterGPT-6 Lunamedium×63.9+45%$0.017Function calling only with none · Chat Completions+3
BetterClaude Haiku 5.5low×26.4+45%$0.024Remove sampling parameters+5BetterGPT-6.1 Sollow×259.3+2,809%$0.13Remove unsupported parameters+5GPT-5.6 Lunalow×9.3+227%$0.01GPT-6 Lunamedium×63.9+45%$0.017Function calling only with none · Chat Completions+3Claude Haiku 5.5low×26.4+45%$0.024Remove sampling parameters+5GPT-6.1 Sollow×259.3+2,809%$0.13Remove unsupported parameters+5GPT-6 Sollow×85.2+2,809%$0.13GLM 5.3 FlashmaxOpen×222.7+73%$0.28Defaults to max · Self-hosted+4
DeepSeek V4 Pro 0813highOpen×212+1,340%$1.32 / $3.96No image input+5
Kimi K3maxOpen×205.6+4,264%$2.00Sampling parameters are fixed+3TInkling SmallxhighOpen×131+364%$0.45 / $1.20Context: 400K → 256K+1
Qwen3.8 27BxhighOpen×129.2+595%$1.01Context: 400K → 262K+5GPT-6 Astrahigh×326.4—$1.73Monitoring can return HTTP 403+2GPT-6.1 Solhigh×319.4—$0.32Remove unsupported parameters+5GPT-5.4 Proxhigh×307.4—$30 / $180No strict JSONGPT-5.5 Prohigh×300.5—$30 / $180GPT-5.6 Solhigh×287—$0.81GPT-5.5high×274.1—$1.54Prompts with >272K input tokensGPT-5.4high×252.8—$2.50 / $15GPT-5.6 Terrahigh×246.3—$0.34Prompts with >272K input tokensAll OpenAI models →History
5 versionsBenchmarks
in Chat & KnowledgeFAQ
How much does GPT-5 Nano cost?›
$0.05 per 1M input tokens and $0.40 per 1M output tokens; cached input $0.005 per 1M.
Is GPT-5 Nano free to use?›
There is no free API; the cheapest paid price is $0.05 per 1M input tokens.
How good is GPT-5 Nano, and what is it best at?›
#199 of 334 in Chat & Knowledge, #117 of 239 in Coding, #132 of 242 in Agents & Tool Use, #161 of 195 in Writing & Language, #95 of 124 in Vision & Documents. Strongest at: Instructions.
Is GPT-5 Nano better than R1 0528?›
On ARC-AGI-2 · public evaluation, GPT-5 Nano scores 0.3 vs 0.3 — about the same.
How can I use GPT-5 Nano?›
Through the API of Azure, OpenAI.
What is the context window of GPT-5 Nano?›
400K tokens, with up to 128K output tokens.
When was GPT-5 Nano released? Is there a newer version?›
Released 2025-08-07. It has been superseded by GPT-5.4 Nano.
Is GPT-5 Nano open source?›
No, GPT-5 Nano is a closed model available through an API. The closest open-weights option here is GLM 5.3 Flash.
Can GPT-5 Nano read images?›
It accepts text and images, PDF files as input.
What is GPT-5 Nano?›
GPT-5 Nano is a closed language model from OpenAI, released Aug 2025.
What are the best alternatives to GPT-5 Nano?›
GPT-5.6 Luna (better), GLM 5.3 Flash (open weights).