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GPT-5.5 Pro
GPT-5.5 Pro is OpenAI’s high-capability model optimized for deep reasoning and accuracy on complex, high-stakes workloads. It features a 1M+ token context window (922K input, 128K output) with support for...
Capabilities:
Input
- Text input
- Image input (vision)
- File input (PDF)
- Audio input
- Video input
Output
- Text output
- Image output
- Audio output
Pricing & availability:
OpenRouter
$30 / $180 per M
Sources:
Details:
Provider
OpenAIContext window
1.05MInput price
$30/MOutput price
$180/MOpen weights
NoKnowledge cutoff
Dec 2025Released
Apr 2026