GPT-5.5 ProvsGPT-5.4 Pro
Across 7 shared benchmarks, GPT-5.5 Pro leads overall: GPT-5.5 Pro wins 6, GPT-5.4 Pro wins 1, with 0 ties and an average score difference of +1.06.
GPT-5.5 Pro
OpenAI · 2026-04-23 · Reasoning model
GPT-5.4 Pro
OpenAI · 2026-03-05 · Multimodal model
GPT-5.5 Pro6 wins(86%)(14%)1 winGPT-5.4 Pro
Benchmark scores
Grouped by capability, sorted by largest gap within each. 7 shared benchmarks.
General Knowledge
GPT-5.5 Pro 2/3| Benchmark | GPT-5.5 Pro | GPT-5.4 Pro | Diff |
|---|---|---|---|
| ARC-AGI | 96.501 / 65Thinking High (No Tools) | 94.505 / 65Thinking High (No Tools) | +2 |
| HLE | 57.204 / 149极高强度思考（工具） | 58.702 / 149Thinking High (With Tools) | -1.50 |
| ARC-AGI-2 | 84.602 / 58Thinking High (No Tools) | 83.30 |
Specs
| Field | GPT-5.5 Pro | GPT-5.4 Pro |
|---|---|---|
| Publisher | OpenAI | OpenAI |
| Release date | 2026-04-23 | 2026-03-05 |
| Model type | Reasoning model | Multimodal model |
| Architecture | Dense | Dense |
| Parameters | 0.0 | 0.0 |
| Context length | 1000K | 1M |
| Max output | 131072 | 128000 |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | GPT-5.5 Pro | GPT-5.4 Pro |
|---|---|---|
| Text input | $30 / 1M tokens | $30 / 1M tokens |
| Text output | $180 / 1M tokens | $180 / 1M tokens |
Summary
- GPT-5.5 Proleads in:General Knowledge (2/3), Math and Reasoning (2/2), AI Agent - Information Search (1/1), Productivity Knowledge (1/1)
On average across the 7 shared benchmarks, GPT-5.5 Pro scores 1.06 higher.
Largest single-benchmark gap: FrontierMath — GPT-5.5 Pro 52.40 vs GPT-5.4 Pro 50 (+2.40).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.