Gemini 3.1 Flash-Lite pricing
Google · API id gemini-3.1-flash-lite · verified 2026-10-18
| Input | $0.25 |
| Cached input (cache hit) | $0.025 |
| Cache write | — |
| Output | $1.50 |
| Batch discount | 50% |
| Context window | 1,048,576 tokens |
| Max output | 65,536 tokens |
USD per 1M tokens unless noted. Official source
Estimate your workload on Gemini 3.1 Flash-Lite →
What Gemini 3.1 Flash-Lite costs for real workloads
| Workload | Gemini 3.1 Flash-Lite | Ministral 3 8B | Claude Haiku 5.5 | GPT-6 Luna | Mistral Small 4 |
|---|---|---|---|---|---|
| 10,000 chatbot replies 2,000 input + 400 output tokens each, 50% of the prompt cached | $8.75 | $2.25 | $3.10 | $3.10 | $4.05 |
| One 30-step coding agent run 12K system + tools prompt, 1K output and 3K tool result per step, caching on | $0.13 | $0.05 | $0.12 | $0.05 | $0.07 |
| 1M documents classified (batch) 600 input + 20 output tokens each, batch API where available | $90.00 | $46.50 | $35.00 | $35.00 | $51.00 |
Compared with the cheapest other small models. Change the numbers in the calculator.
Billing notes
Text/image/video input price; audio input $0.50. released = model page "Latest update" month. Output price includes thinking tokens. Explicit context caching also bills storage per 1M tokens/hour; Google has no separate cache-write price.
Where Gemini 3.1 Flash-Lite ranks by use case
Position by cost among all models that fit each workload (1 = cheapest).
- Cheapest LLM for coding agents: #8 of 36 (Per run (cached): $0.13)
- Cheapest LLM for RAG chatbots: #7 of 36 (Per 1,000 answers: $1.76)
- Cheapest LLM for batch classification and extraction: #6 of 36 (Classify 1M docs: $90.00)
- Long-context document analysis (400K tokens): #3 of 29 (10 questions, cached: $0.22)
- Cheapest LLM for high-volume customer support: #8 of 36 (Per 1,000 replies: $0.74)
Counting tokens for a prompt? The token counter estimates Gemini 3.1 Flash-Lite tokens (Gemini tokenizer, estimated) and input cost.
Head-to-head comparisons
Other Google models
- Gemini 4 Argon: $2.00 / $10.00
- Gemini 3.1 Pro (Preview): $2.00 / $12.00
- Gemini 3.8 Flash: $0.75 / $3.75
- Gemini 3.6 Flash: $0.75 / $3.75
- Gemini 3.5 Flash-Lite: $0.30 / $2.50
- Gemini 2.5 Flash: $0.30 / $2.50
FAQ
How much does Gemini 3.1 Flash-Lite cost per 1M tokens?
Gemini 3.1 Flash-Lite costs $0.25 per 1M input tokens and $1.50 per 1M output tokens at standard rates (verified 2026-10-18).
Does Gemini 3.1 Flash-Lite support prompt caching?
Yes. Cached input is billed at $0.025 per 1M tokens.
Is there a batch discount for Gemini 3.1 Flash-Lite?
Yes. The batch API is 50% cheaper than standard requests.
What is the context window of Gemini 3.1 Flash-Lite?
1,048,576 tokens, with up to 65,536 output tokens.