GPT-5.5 - API Pricing & Benchmarks | OpenRouter

OpenAI: GPT-5.5

openai/gpt-5.5

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GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling large-scale reasoning, coding, and multimodal workflows within a single system.

Modalities

Input Price

$5/M

Output Price

$30/M

Context

1M

Weekly Tokens

513B

Released

Apr 24, 2026

Standard

Providers for GPT-5.5<br>OpenRouter routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.