GPT-5 Nano
GPT-5 NanoAlternatives?
BetterGPT-6 Lunalow+82%+45%$0.005Function calling only with none · Chat Completions+3
OpenDeepSeek V4.1 Flash 1017high×4.6+282%$0.30 / $1.20Pass back reasoning_content · Chat Completions+4BetterGPT-5.6 Lunalow+65%+227%$0.01
BetterClaude Haiku 5.5low×2.4+45%$0.024Remove sampling parameters+5BetterGPT-6.1 Sollow×4.5+2,809%$0.13Remove unsupported parameters+5GPT-6 Lunalow+82%+45%$0.005Function calling only with none · Chat Completions+3GPT-5.6 Lunalow+65%+227%$0.01Claude Haiku 5.5low×2.4+45%$0.024Remove sampling parameters+5GPT-6.1 Sollow×4.5+2,809%$0.13Remove unsupported parameters+5GPT-6 Sollow×3.5+2,809%$0.13DeepSeek V4.1 Flash 1017highOpen×4.6+282%$0.30 / $1.20Pass back reasoning_content · Chat Completions+4
Kimi K3maxOpen×4.6+4,264%$2.00Sampling parameters are fixed+3
GLM 5.3 FlashmaxOpen×4.4+73%$0.28Defaults to max · Self-hosted+4DeepSeek V4 Pro 0813lowOpen×4.4+1,340%$1.32 / $3.96No image input+5
Muse Spark OpenxhighOpen×4.3+1,355%$0.84Reasoning off leaves output unchanged · Self-hosted / llama.cpp+1GPT-6 Astramedium×4.7—$1.54Monitoring can return HTTP 403+2GPT-5.5 Prohigh×4.7—$30 / $180GPT-6.1 Solmedium×4.6—$0.21Remove unsupported parameters+5GPT-5.4 Proxhigh×4.6—$30 / $180No strict JSONGPT-5.6 Solmedium×4.5—$0.50GPT-5.5medium×4.5—$0.77Prompts with >272K input tokensGPT-5.4medium×4.2—$2.50 / $15GPT-6 Solmedium×4—$0.25All 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?›
#209 of 336 in Chat & Knowledge, #99 of 239 in Coding, #147 of 242 in Agents & Tool Use, #153 of 197 in Writing & Language, #99 of 125 in Vision & Documents.
Is GPT-5 Nano better than Nemotron 3.5 Super VL?›
On ARC-AGI-1 · semi-private, GPT-5 Nano scores 20.7 vs 22.7 — lower.
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 It has been superseded by GPT-5.6 Luna.
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 DeepSeek V4.1 Flash 1017.
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-6 Luna (better), DeepSeek V4.1 Flash 1017 (open weights).