Comparison
Gemini 2.5 Flash-Lite vs Gemini 3.1 Pro Preview
Gemini 2.5 Flash-Lite costs 95% less per input token than Gemini 3.1 Pro Preview. On generated (output) tokens, Gemini 3.1 Pro Preview costs 97% more than Gemini 2.5 Flash-Lite.
| Field | Gemini 2.5 Flash-Lite | Gemini 3.1 Pro Preview |
|---|---|---|
| Provider | ||
| Context window | — | — |
| Max output | — | — |
| Input / 1M | $0.1095% cheaper | $2.00 |
| Output / 1M | $0.4097% cheaper | $12.00 |
| Cached input / 1M | $0.0195% cheaper | $0.20 |
| Batch discount | 50% | 50% |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Gemini 2.5 Flash-Lite | Gemini 3.1 Pro Preview |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $16.00cheaper | $400.00 |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $26.40cheaper | $612.00 |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $13.00cheaper | $290.00 |
Gemini 2.5 Flash-Lite vs Gemini 3.1 Pro Preview FAQ
- Is Gemini 2.5 Flash-Lite cheaper than Gemini 3.1 Pro Preview?
- Gemini 2.5 Flash-Lite costs $0.10 per 1M input tokens versus $2.00 for Gemini 3.1 Pro Preview — Gemini 2.5 Flash-Lite is 95% cheaper per input token.
- Which is cheaper for output tokens, Gemini 2.5 Flash-Lite or Gemini 3.1 Pro Preview?
- Gemini 2.5 Flash-Lite charges $0.40 per 1M output tokens; Gemini 3.1 Pro Preview charges $12.00 per 1M output tokens.
- Do Gemini 2.5 Flash-Lite and Gemini 3.1 Pro Preview offer cache pricing?
- Gemini 2.5 Flash-Lite discounts cached input to $0.01 per 1M tokens. Gemini 3.1 Pro Preview discounts cached input to $0.20 per 1M tokens.
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