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...
Input / 1M
$0.05
Output / 1M
$0.40
Context
400K
AA Intelligence
13
Closed weights — available only as a hosted API
text + image + file → text
Knowledge cutoff May 2024
View on OpenRouter ↗
Pricing
via OpenRouter · USD per 1M tokens · synced 2026-10-24$0.05
input / 1M
$0.40
output / 1M
$0.005
cached input / 1M
$0.45
1M in + 1M out
:batch variant
$0.025 in · $0.20 out
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Providers
- 2
- Cheapest provider
- OpenAI · $0.025 / $0.20
- Best throughput
- —
- AA Intelligence / Coding / Agentic
- 13 / — / —
✓ Tool calling
✓ Reasoning
✓ Structured outputs
✓ Image input
✓ File input
✗ Audio input
✓ Prompt caching
Price history
tracking started — chart appears after 7 days of snapshots (6 recorded)Current: $0.05 input · $0.40 output per 1M tokens
Benchmarks
Third-party indices as published through OpenRouter — Artificial Analysis and Design Arena. Not measured by us.
- AA Intelligence Index
- 13
- AA Coding Index
- —
- AA Agentic Index
- —
Design Arena
CategoryEloWin %Rank
3d
966
36.3%
#117
codecategories
1084
48%
#107
dataviz
1056
46.2%
#109
gamedev
1045
46.5%
#115
uicomponent
1064
51.9%
#105
website
1101
48.9%
#110
Providers
2 providers · per 1M tokens · last 30 min metrics| Provider | Quant | Context | Input | Output | Uptime | Tok/s |
|---|---|---|---|---|---|---|
| OpenAI | unknown | 400K | $0.025 | $0.20 | 100% | — |
| Azure | unknown | 400K | $0.05 | $0.40 | 100% | — |
| OpenAI | unknown | 400K | $0.05 | $0.40 | 100% | — |
| Azure | unknown | 400K | $0.055 | $0.44 | 100% | — |
Provider data from OpenRouter's endpoint listing, refreshed daily.
Specifications
- Organisation
- openai
- Released on OpenRouter
- 2025-08-07
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Input
- text, image, file
- Output
- text
- Knowledge cutoff
- May 2024
- Tokenizer
- GPT
- Moderated by provider
- Yes
- OpenRouter id
- openai/gpt-5-nano
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Prices, context and providers from the public OpenRouter API, snapshotted daily; benchmark indices from Artificial Analysis. See /methodology.