Gemini 3.1 Flash Lite Preview vs Gemini 3.1 Pro Preview Custom Tools
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 Gemini 3.1 Pro Preview Custom Tools.
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...
Gemini 3.1 Pro Preview Custom Tools
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
Technical Specifications
| Specification | Gemini 3.1 Flash Lite Preview | Gemini 3.1 Pro Preview Custom Tools |
|---|---|---|
| Provider | ||
| Context Window | 1,048,576 tokens | 1,048,756 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 | beta |
| API Available | Yes | Yes |
| Released Date | 2026-03-03 | 2026-02-25 |
API Pricing Comparison
Input Price per Million Tokens
Gemini 3.1 Flash Lite Preview
$0.25
Gemini 3.1 Pro Preview Custom Tools
$2.00
Output Price per Million Tokens
Gemini 3.1 Flash Lite Preview
$1.50
Gemini 3.1 Pro Preview Custom Tools
$12.00
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Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.
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.
Gemini 3.1 Pro Preview Custom Tools Quirks & Gotchas
No developer gotchas reported.