OpenAI: GPT-5.5 Pro
Analysis Summary
OpenAI: GPT-5.5 Pro sits in the Emerging tier on our leaderboard, ranked #385 of 556 published models on overall intelligence. At $30.00 input and $180.00 output per 1M tokens, it is among the most expensive on the market. It offers an exceptionally large context window suited to long-document workflows and supports tool use, function calling, vision, and reasoning.
Editorial notes
GPT-5.5 Pro carries no benchmark data and commands very high pricing at $30/$180 per million tokens; scored conservatively until performance data is available.
Assessed May 14, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
GPT-5.5 Pro is OpenAIās 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
How does OpenAI: GPT-5.5 Pro stack up?
Compare side-by-side with other emerging models.
Model Information
| OpenRouter ID |
openai/gpt-5.5-pro
|
| Provider | openai |
| Release Date | April 24, 2026 |
| Context Length | 1,050,000 tokens |
| Max Completion | 128,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $30.00 | $0.030000 |
| Output | $180.00 | $0.180000 |
Live Performance
Live endpoint metrics ā refreshed every 30 minutes.
