GPT-5.5 ProvsGPT-5.4 Pro
Across 5 shared benchmarks, GPT-5.5 Pro leads overall: GPT-5.5 Pro wins 4, GPT-5.4 Pro wins 1, with 0 ties and an average score difference of +5.34.
GPT-5.5 Pro
OpenAI · 2026-04-23 · Reasoning model
GPT-5.4 Pro
OpenAI · 2026-03-05 · Multimodal model
GPT-5.5 Pro4 wins(80%)(20%)1 winGPT-5.4 Pro
Benchmark scores
Grouped by capability, sorted by largest gap within each. 5 shared benchmarks.
General Knowledge
GPT-5.5 Pro 2/2| Benchmark | GPT-5.5 Pro | GPT-5.4 Pro | Diff |
|---|---|---|---|
| ARC-AGI-1 | 96.5015 / 147Thinking High (No Tools) | 94.5026 / 147Thinking High (No Tools) | +2 |
| CritPt | 30.605 / 200Extra-High (No Tools) | 307 / 200Extra-High (No Tools) | +0.60 |
Math and Reasoning
GPT-5.5 Pro 2/2| Benchmark | GPT-5.5 Pro | GPT-5.4 Pro | Diff |
|---|---|---|---|
| FrontierMath Tier 4 v2 | 78.055 / 42Extra-High (No Tools) | 58.5410 / 42Extra-High (No Tools) | +19.51 |
| FrontierMath v2 | 87.722 / 58Extra-High (No Tools) | 82.467 / 58Extra-High (No Tools) | +5.26 |
General Evaluation
GPT-5.4 Pro 1/1| Benchmark | GPT-5.5 Pro | GPT-5.4 Pro | Diff |
|---|---|---|---|
| GPQA Diamond | 93.9218 / 462Extra-High (No Tools) | 94.606 / 462Extra-High (No Tools) | -0.68 |
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 | Not available | Not available |
| Context length | 1000K | 1M |
| Max output | 128K | 125K |
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 (2/2), Math and Reasoning (2/2)
- GPT-5.4 Proleads in:General Evaluation (1/1)
On average across the 5 shared benchmarks, GPT-5.5 Pro scores 5.34 higher.
Largest single-benchmark gap: FrontierMath Tier 4 v2 — GPT-5.5 Pro 78.05 vs GPT-5.4 Pro 58.54 (+19.51).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.