OpenAI: GPT-5.1 (openai/gpt-5.1) is a chat model from openrouter with a 400K-token context window; capabilities tools, reasoning, vision; input image, pdf, text; output text.
400KContext
128KMax output
$1.25$ / 1M in
Pricing
Input
$1.25 / 1M tokens
Output
$10 / 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: openrouter. Last verified 2026-07-24.