token.app › Compare › GPT-4o vs Gemini 3.5 Flash Lite
GPT-4o vs Gemini 3.5 Flash Lite
Gemini 3.5 Flash Lite leads on 2 of 2 shared benchmarks. Gemini 3.5 Flash Lite is 5.1× 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
| GPT-4o | Gemini 3.5 Flash Lite | |
|---|---|---|
| Provider | OpenAI | |
| Input $/1M | $2.50 | $0.300 |
| Output $/1M | $10.00 | $2.50 |
| Blended $/1M | $4.38 | $0.850 |
| Context window | 128K | 1.0M |
| Max output | 16K | 66K |
| Released | May 2024 | Jul 2026 |
| Licence | Proprietary | Proprietary |
| GPQA Diamond | 47.9% | 83.3% |
| OTIS Mock AIME | 6.3% | 71.1% |
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-4o if…
- No clear advantage on the data we hold.
Choose Gemini 3.5 Flash Lite if…
- Costs less per token — $0.850 vs $4.38 blended
- Higher GPQA Diamond (83.3% vs 47.9%)
- Higher OTIS Mock AIME (71.1% vs 6.3%)
- Larger context window (1.0M)
- Newer model (released Jul 2026)
FAQ
Which is better, GPT-4o or Gemini 3.5 Flash Lite?
Across the 2 benchmarks both models have independently-run scores for, GPT-4o leads on 0 and Gemini 3.5 Flash Lite leads on 2. Benchmarks are one input — price and context window are on this page too.
Is GPT-4o cheaper than Gemini 3.5 Flash Lite?
Gemini 3.5 Flash Lite is cheaper: $0.850 versus $4.38 per million tokens blended at 3:1 input:output. Input alone: $2.50 vs $0.300. Output alone: $10.00 vs $2.50.
What context windows do GPT-4o and Gemini 3.5 Flash Lite have?
GPT-4o: 128,000 tokens. Gemini 3.5 Flash Lite: 1,048,576 tokens.
Who makes GPT-4o and Gemini 3.5 Flash Lite?
GPT-4o is made by OpenAI. Gemini 3.5 Flash Lite is made by Google.