Gemini 3.1 Flash Lite Preview vs o3 Pro
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Gemini 3.1 Flash Lite Preview and o3 Pro.
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases. It outperforms Gemini 2.5 Flash Lite on overall quality and approaches Gemini 2.5 Flash performance across...
o3 Pro
The o-series of models are trained with reinforcement learning to think before they answer and perform complex reasoning. The o3-pro model uses more compute to think harder and provide consistently...
Technical Specifications
| Specification | Gemini 3.1 Flash Lite Preview | o3 Pro |
|---|---|---|
| Provider | OpenAI | |
| Context Window | 1,048,576 tokens | 200,000 tokens |
| Agent Suitability | N/A | N/A |
| Time to First Token (TTFT) | N/A | N/A |
| Deployment Model | managed api | managed api |
| Production Stability | beta | stable |
| API Available | Yes | Yes |
| Released Date | 2026-03-03 | 2025-06-10 |
API Pricing Comparison
Input Price per Million Tokens
Gemini 3.1 Flash Lite Preview
$0.25
o3 Pro
$20.00
Output Price per Million Tokens
Gemini 3.1 Flash Lite Preview
$1.50
o3 Pro
$80.00
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Gemini 3.1 Flash Lite Preview Quirks & Gotchas
No developer gotchas reported.
o3 Pro Quirks & Gotchas
No developer gotchas reported.