token.app › Compare › o3 vs Gemini 3.6 Flash
o3 vs Gemini 3.6 Flash
Gemini 3.6 Flash leads on 3 of 3 shared benchmarks. Gemini 3.6 Flash is 1.2× cheaper per token on a blended 3:1 basis. Gemini 3.6 Flash accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 | Gemini 3.6 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $2.00 | $1.50 |
| Output $/1M | $8.00 | $7.50 |
| Blended $/1M | $3.50 | $3.00 |
| Context window | 200K | 1.0M |
| Max output | 100K | 66K |
| Released | Apr 2025 | Jul 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 81.8% | 94.1% |
| SimpleQA Verified | 53.0% | 68.7% |
| OTIS Mock AIME | 84.4% | 94.2% |
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 o3 if…
- No clear advantage on the data we hold.
Choose Gemini 3.6 Flash if…
- Costs less per token — $3.00 vs $3.50 blended
- Higher GPQA Diamond (94.1% vs 81.8%)
- Higher SimpleQA Verified (68.7% vs 53.0%)
- Higher OTIS Mock AIME (94.2% vs 84.4%)
- Larger context window (1.0M)
- Newer model (released Jul 2026)
FAQ
Which is better, o3 or Gemini 3.6 Flash?
Across the 3 benchmarks both models have independently-run scores for, o3 leads on 0 and Gemini 3.6 Flash leads on 3. Benchmarks are one input — price and context window are on this page too.
Is o3 cheaper than Gemini 3.6 Flash?
Gemini 3.6 Flash is cheaper: $3.00 versus $3.50 per million tokens blended at 3:1 input:output. Input alone: $2.00 vs $1.50. Output alone: $8.00 vs $7.50.
What context windows do o3 and Gemini 3.6 Flash have?
o3: 200,000 tokens. Gemini 3.6 Flash: 1,048,576 tokens.
Who makes o3 and Gemini 3.6 Flash?
o3 is made by OpenAI. Gemini 3.6 Flash is made by Google.