token.app › Compare › GPT-5.5 Pro vs Gemini 3.6 Flash
GPT-5.5 Pro vs Gemini 3.6 Flash
GPT-5.5 Pro leads on 2 of 2 shared benchmarks. Gemini 3.6 Flash is 23× cheaper per token on a blended 3:1 basis. GPT-5.5 Pro accepts the larger context window (1.1M).
Head to head
Blended price uses a 3:1 input:output mix
| GPT-5.5 Pro | Gemini 3.6 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $30.00 | $1.50 |
| Output $/1M | $180.00 | $7.50 |
| Blended $/1M | $67.50 | $3.00 |
| Context window | 1.1M | 1.0M |
| Max output | 128K | 66K |
| Released | Apr 2026 | Jul 2026 |
| Licence | Proprietary | Proprietary |
| FrontierMath T1–3 | 87.7% | 58.9% |
| FrontierMath T4 | 78.0% | 22.0% |
Benchmark scores independently run and published by Epoch AI, 'AI Benchmarking Hub', used under CC BY 4.0. Only benchmarks with a score for BOTH models are compared.
Choose GPT-5.5 Pro if…
- Higher FrontierMath T1–3 (87.7% vs 58.9%)
- Higher FrontierMath T4 (78.0% vs 22.0%)
- Larger context window (1.1M)
Choose Gemini 3.6 Flash if…
- Costs less per token — $3.00 vs $67.50 blended
- Newer model (released Jul 2026)
FAQ
Which is better, GPT-5.5 Pro or Gemini 3.6 Flash?
Across the 2 benchmarks both models have independently-run scores for, GPT-5.5 Pro leads on 2 and Gemini 3.6 Flash leads on 0. Benchmarks are one input — price and context window are on this page too.
Is GPT-5.5 Pro cheaper than Gemini 3.6 Flash?
Gemini 3.6 Flash is cheaper: $3.00 versus $67.50 per million tokens blended at 3:1 input:output. Input alone: $30.00 vs $1.50. Output alone: $180.00 vs $7.50.
What context windows do GPT-5.5 Pro and Gemini 3.6 Flash have?
GPT-5.5 Pro: 1,050,000 tokens. Gemini 3.6 Flash: 1,048,576 tokens.
Who makes GPT-5.5 Pro and Gemini 3.6 Flash?
GPT-5.5 Pro is made by OpenAI. Gemini 3.6 Flash is made by Google.