Gemini 3.1 Flash Lite 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 and Gemini 3.1 Pro Preview Custom Tools.
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite is Google’s GA high-efficiency multimodal model optimized for low-latency, high-volume workloads. It supports text, image, video, audio, and PDF inputs, and is designed for lightweight agentic...
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 | 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 | 2026-05-07 | 2026-02-25 |
API Pricing Comparison
Input Price per Million Tokens
Gemini 3.1 Flash Lite
$0.25
Gemini 3.1 Pro Preview Custom Tools
$2.00
Output Price per Million Tokens
Gemini 3.1 Flash Lite
$1.50
Gemini 3.1 Pro Preview Custom Tools
$12.00
Want to test both models live?
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 Quirks & Gotchas
No developer gotchas reported.
Gemini 3.1 Pro Preview Custom Tools Quirks & Gotchas
No developer gotchas reported.