OpenAI: GPT-5 Nano (openai/gpt-5-nano) is a chat model from openrouter with a 272K-token context window; proprietary (API-only); capabilities reasoning, tools, vision; input image, pdf, text; output text.
272KContext
128KMax output
$0.05$ / 1M in
Pricing
Input
$0.05 / 1M tokens
Output
$0.4 / 1M tokens
Currency
USD
Note
Indicative US list price — verify with the vendor.
Indicative US list price — a reference only, verify with the vendor. Source: litellm. Last verified 2026-07-24.