Gemini 2.5 Flash-Lite vs Gemini 3.1 Pro
Compare Google and Google AI models
Cost Comparison (1000 input + 500 output tokens, 100 requests/day)
Gemini 2.5 Flash-Lite
Gemini 3.1 Pro
Cost Differences
Gemini 3.1 Pro costs more than Gemini 2.5 Flash-Lite
Feature Comparison
| Feature | Gemini 2.5 Flash-Lite | Gemini 3.1 Pro |
|---|---|---|
| Provider | ||
| Input Price | $0.10/1M tokens | $2.00/1M tokens |
| Output Price | $0.40/1M tokens | $12.00/1M tokens |
| Context Window | 1,000,000 tokens | 1,000,000 tokens |
| Max Output | 32,768 tokens | 65,536 tokens |
| Category | efficient | flagship |
| Capabilities | textvisionaudio | textvisionaudiovideocodereasoning |
| Release Date | 6/17/2025 | 2/19/2026 |
Gemini 2.5 Flash-Lite vs Gemini 3.1 Pro: Which Should You Choose?
Choosing between Gemini 2.5 Flash-Lite and Gemini 3.1 Pro depends on your priorities: cost efficiency, context length, or raw capability. Gemini 2.5 Flash-Lite is the more affordable option at $0.10/1M input tokens — 95% cheaper than Gemini 3.1 Pro.
These models target different tiers: Gemini 2.5 Flash-Lite is a efficient model while Gemini 3.1 Pro is flagship. This means they're optimized for different workloads. Gemini 3.1 Pro targets more demanding workloads, while Gemini 2.5 Flash-Lite provides a cost-effective option for everyday tasks.
Output costs matter too. Gemini 2.5 Flash-Lite charges $0.40/1M output tokens vs $12.00 for Gemini 3.1 Pro. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. Gemini 2.5 Flash-Lite has the edge here at $0.40/1M output tokens.
Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.
Best Use Cases
Choose Gemini 2.5 Flash-Lite when:
- • Budget is a primary concern
- • You're already using Google's API ecosystem
- • You're running high-volume, latency-sensitive workloads
Choose Gemini 3.1 Pro when:
- • You need more capabilities (video, code, reasoning)
- • You need longer outputs (up to 65,536 tokens)
- • You're already using Google's API ecosystem
Try Different Scenarios
Use the calculator below to see how costs change with different usage patterns
Gemini 2.5 Flash-Lite (Google)
Gemini 3.1 Pro (Google)
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