token.app › Compare › o3 Pro vs Gemini 3.6 Flash
o3 Pro vs Gemini 3.6 Flash
Gemini 3.6 Flash is 12× 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 Pro | Gemini 3.6 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $20.00 | $1.50 |
| Output $/1M | $80.00 | $7.50 |
| Blended $/1M | $35.00 | $3.00 |
| Context window | 200K | 1.0M |
| Max output | 100K | 66K |
| Released | Jun 2025 | Jul 2026 |
| Licence | Proprietary | Proprietary |
Choose o3 Pro if…
- No clear advantage on the data we hold.
Choose Gemini 3.6 Flash if…
- Costs less per token — $3.00 vs $35.00 blended
- Larger context window (1.0M)
- Newer model (released Jul 2026)
FAQ
Which is better, o3 Pro or Gemini 3.6 Flash?
We do not hold independently-run benchmark scores covering both o3 Pro and Gemini 3.6 Flash, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Gemini 3.6 Flash?
Gemini 3.6 Flash is cheaper: $3.00 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $1.50. Output alone: $80.00 vs $7.50.
What context windows do o3 Pro and Gemini 3.6 Flash have?
o3 Pro: 200,000 tokens. Gemini 3.6 Flash: 1,048,576 tokens.
Who makes o3 Pro and Gemini 3.6 Flash?
o3 Pro is made by OpenAI. Gemini 3.6 Flash is made by Google.