OpenAI: GPT-5 Nano
Analysis Summary
GPT-5 Nano is the smallest model in OpenAI's GPT-5 line, prioritising speed and cost over reasoning depth. It retains tool use, function calling, and vision, but its intelligence is limited compared to larger siblings.
Businesses should reserve it for narrow, high-volume tasks like intent classification, simple data extraction, or routing logic within larger pipelines, not for nuanced content or complex reasoning.
At $0.05 input and $0.40 output per million tokens with a 400K context window, it is exceptionally cheap, making it useful as a cost-control layer alongside a more capable model for escalations.
Assessed July 25, 2026
Editorial notes
GPT-5 Nano is an ultra-cheap, low-latency model best suited to simple classification or routing tasks rather than complex reasoning.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
DFO Verdict
GPT-5 Nano is an ultra-cheap, low-latency model best suited to simple classification or routing tasks rather than complex reasoning.
How OpenAI: GPT-5 Nano compares
OpenAI: GPT-5 Nano ranks #283 of 401 AI models we track for overall intelligence. Its 400K-token context window is larger than 78% of the models we list. At $0.05 per million input tokens it is cheaper than 76% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in intelligence corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $0.05 | $0.000050 |
| Output | $0.40 | $0.000400 |
What would OpenAI: GPT-5 Nano cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 688 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save OpenAI: GPT-5 Nano for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: GPT-5 Nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger..
Frequently asked questions about OpenAI: GPT-5 Nano
How much does OpenAI: GPT-5 Nano cost?
OpenAI: GPT-5 Nano costs $0.05 per million input tokens and $0.40 per million output tokens.
What is the context window of OpenAI: GPT-5 Nano?
OpenAI: GPT-5 Nano has a context window of 400,000 tokens (400K).
What can OpenAI: GPT-5 Nano do?
OpenAI: GPT-5 Nano supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-5 Nano?
OpenAI: GPT-5 Nano is developed by OpenAI and was released on August 7, 2025.
