OpenAI: GPT-5.5 Pro

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...

Modalities

Input

textimagepdf

Output

text

Pricing

Cost per 1 million tokens

Input

$36

Output

$216

Model Specs

Context Window

1,050,000

Max Output

128,000

Release Date

2026-04-24

Knowledge Cutoff

2025-12-01

Capabilities

Reasoning

Tool Calling

Vision

Last Updated: 2026-04-24

Provider: @ai-sdk/openai