token.app › Compare › o3 Pro vs Gemini 3.5 Flash Lite
o3 Pro vs Gemini 3.5 Flash Lite
Gemini 3.5 Flash Lite is 41× cheaper per token on a blended 3:1 basis. Gemini 3.5 Flash Lite accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| o3 Pro | Gemini 3.5 Flash Lite | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $20.00 | $0.300 |
| Output $/1M | $80.00 | $2.50 |
| Blended $/1M | $35.00 | $0.850 |
| 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 3.5 Flash Lite if…
- Costs less per token — $0.850 vs $35.00 blended
- Larger context window (1.0M)
- Newer model (released Jul 2026)
FAQ
Which is better, o3 Pro or Gemini 3.5 Flash Lite?
We do not hold independently-run benchmark scores covering both o3 Pro and Gemini 3.5 Flash Lite, so we make no quality claim. Their pricing and specifications are compared on this page.
Is o3 Pro cheaper than Gemini 3.5 Flash Lite?
Gemini 3.5 Flash Lite is cheaper: $0.850 versus $35.00 per million tokens blended at 3:1 input:output. Input alone: $20.00 vs $0.300. Output alone: $80.00 vs $2.50.
What context windows do o3 Pro and Gemini 3.5 Flash Lite have?
o3 Pro: 200,000 tokens. Gemini 3.5 Flash Lite: 1,048,576 tokens.
Who makes o3 Pro and Gemini 3.5 Flash Lite?
o3 Pro is made by OpenAI. Gemini 3.5 Flash Lite is made by Google.