GPT-5 Nano
OpenAI · Proprietary · Released Aug 7, 2025 · openai/gpt-5-nano
400K contextVisionToolsReasoningStructured outputPrompt caching
Available from 4 providersUSD / MTOK · VERIFIED 4 MINUTES AGO
EST. MONTHLY COSTclick a row for detail · click headers to sort
| PROVIDER | INPUT | OUTPUT | CACHE | CONTEXT | QUANT | TTFT | TPS | UPTIME |
|---|---|---|---|---|---|---|---|---|
 OpenAI1ST PARTY | $0.025 | $0.20 | $0.003 | 400K | — | 1.9s | 102 tok/s | 97.5% |
 Azure | $0.05 | $0.40 | $0.01 | 400K | — | 2.7s | 124 tok/s | 100.0% |
| OpenAI1ST PARTY | $0.05 | $0.40 | $0.005 | 400K | — | — | — | 97.5% |
| Azure | $0.055 | $0.44 | $0.011 | 400K | — | — | — | 100.0% |
TTFT/TPS: median (P50) over trailing 72h · chat10k profile (~10K in / 200 out) · measured via OpenRouter routing · methodology v1.1 · measured 44 hours ago
Pricing variants · USD / MTok in / out
STANDARD
$0.025 / $0.20
per MTok in / out
BATCH
$0.025 / $0.20
async batch
CACHE READ $0.003WEB SEARCH $0.01 / search
About
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...
Specifications
Context window400,000
Max output128,000
Modalities intext, image, file
Modalities outtext
LicenseProprietary
ReleasedAug 7, 2025
Knowledge cutoff2024-05-31
TokenizerGPT
Related
Embed badge
[](https://modelindex.ai/models/openai/gpt-5-nano)Sources
OpenRouter API4 minutes ago
AGGREGATORLiteLLM dataset4 minutes ago
AGGREGATORModelIndex benchmarks44 hours ago
MEASUREDVerified 4 minutes ago · list prices, not negotiated rates.