GPT-5.5 (xhigh)
Analysis Summary
GPT-5.5 (xhigh) sits in the Frontier tier on our leaderboard, ranked #7 of 523 published models on overall intelligence. At $5.00 input and $30.00 output per 1M tokens, it is among the most expensive on the market.
Editorial notes
GPT-5.5 XHigh from OpenAI leads the entire field on both intelligence and coding, with best-in-class instruction following, long-context reasoning, and agentic reliability; premium pricing is the only trade-off.
Assessed April 24, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
Performance Indices
Source: Artificial Analysis
This model was released recently. Independent benchmark evaluations are typically completed within days of release — these figures are preliminary and are likely to be updated as testing is finalised.
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does GPT-5.5 (xhigh) stack up?
Compare side-by-side with other frontier models.
Model Information
| Provider | OpenAI |
| Release Date | April 23, 2026 |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $5.00 | $0.005000 |
| Output | $30.00 | $0.030000 |
