Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview is Google's language model with a 1.0M context window and up to 66K output tokens, available from 4 providers, starting at $0.250 / 1M input and $1.50 / 1M output. A preview release of Gemini 3.1 Flash Lite offering early evaluation of its lightweight reasoning, vision, and tool-use capabilities.
Capabilities
Input5/5
Text✓
Image✓
Audio✓
Video✓
PDF✓
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities10/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling✓
Structured Outputs✓
Native JSON Schema✓
Web Search✓
URL Context✓
Computer Use·
Code Execution✓
File Search✓
Prompt Caching✓
Assistant Prefill·
Pricing by Provider
| Provider | Standard | Batch | Flex | Priority | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Input $ / 1M | Output $ / 1M | Cache Read $ / 1M | Cache Write $ / 1M | Reasoning $ / 1M | Audio In $ / 1M | Web Search $ / query | Input $ / 1M | Output $ / 1M | Audio In $ / 1M | Input $ / 1M | Output $ / 1M | Audio In $ / 1M | Input $ / 1M | Output $ / 1M | Audio In $ / 1M | |
Google Gemini | $0.250 | $1.50 | $0.025 | $0.025 | $1.50 | $0.500 | N/A | $0.125 | $0.750 | $0.250 | $0.125 | $0.750 | $0.250 | $0.450 | $2.70 | $0.900 |
 Google Vertex AI | $0.250 | $1.50 | $0.025 | $0.025 | $1.50 | $0.500 | N/A | $0.125 | $0.750 | $0.250 | $0.125 | $0.750 | $0.250 | $0.450 | $2.70 | $0.900 |
 OpenRouter | $0.250 | $1.50 | $0.025 | N/A | $1.50 | $0.500 | $0.014 | — | — | — | — | — | — | — | — | — |
 Vercel AI Gateway | $0.250 | $1.50 | $0.030 | N/A | N/A | N/A | N/A | — | — | — | — | — | — | — | — | — |
Cost Calculator
Preset:
Versions
| Version | Released | Context | Input / 1M | Output / 1M | Status |
|---|---|---|---|---|---|
| Gemini 3.1 Flash Lite | 1.0M | $0.250 | $1.50 | Available | |
| Gemini 3.1 Flash Lite Preview | 1.0M | $0.250 | $1.50 | Current | |
| Gemini 3.1 Flash Lite Live | — | — | $0.250 | $1.50 | Available |
| Gemini 3.1 Flash Lite Live Preview | — | — | $0.250 | $1.50 | Available |
| Gemini 3.1 Flash Lite Live Tuned | — | — | — | — | Available |
| Gemini 3.1 Flash Lite Tuned | — | — | — | — | Available |
| Gemini 2.5 Flash Lite Preview | 1.0M | $0.100 | $0.400 | Deprecated | |
| Gemini 2.5 Flash Lite | 1.0M | $0.075 | $0.300 | Available | |
| Gemini 2.0 Flash Lite | 1.0M | $0.075 | $0.300 | Deprecating | |
| Gemini 2.5 Flash Lite Preview Reasoning | — | — | — | — | Available |
| Gemini 2.5 Flash Lite Reasoning | — | — | — | — | Available |
Other models
| Model | Tier | Released | Context | Input / 1M | Output / 1M |
|---|---|---|---|---|---|
| Gemini 3.5 Flash | Flash | 1.0M | $1.50 | $9.00 | |
| Gemini 3.1 Pro Preview Custom Tools | Pro | 1.0M | $2.00 | $12.00 | |
| Gemini 3.1 Pro Preview | Pro | 1.0M | $2.00 | $12.00 | |
| Gemini 3 Flash | Flash | 1.0M | $0.500 | $3.00 | |
| Gemini 3 Flash Preview | Flash | 1.0M | $0.500 | $3.00 | |
| Gemini 3 Pro Preview | Pro | 1.0M | $2.00 | $12.00 | |
| Gemini 3 Pro Image | Pro | 66K | $2.00 | $12.00 | |
| Gemini 3 Flash Reasoning | Flash | — | — | — | — |
| Gemini 3 Pro | Pro | — | — | $2.00 | $12.00 |
| Gemini 3 Pro Preview Low | Pro | — | — | — | — |