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Gemini 3.8 Flash API pricing
As of October 16, 2026, Gemini 3.8 Flash costs $0.75 per million input tokens and $3.75 per million output tokens on the Google API. Cached input is $0.075 per million.
It is the 8th cheapest of 16 Gemini models tracked here, by blended price. The closest Standard-tier model from another provider is Grok 4.20 (xAI) at $1.25 / $2.50; Gemini 3.8 Flash is 4% cheaper. Same list price as Gemini 3.6 Flash, Gemini 3.7 Flash. First listed in the LiteLLM price data on September 2, 2026.
Input / 1M tokens$0.75
Output / 1M tokens$3.75
Context window1.05M
Max output66K
Every published rate
| Rate | Per 1M tokens |
|---|---|
| Input (standard) | $0.75 |
| Output (standard) | $3.75 |
| Cached input (read) | $0.075 |
| Batch input | $0.375 |
| Batch output | $1.88 |
What it costs in practice
| Task | Tokens | Per request | Per 1,000 requests |
|---|---|---|---|
| Chatbot reply | 1,000 in / 500 out | $0.0026 | $2.63 |
| Summarize a long document | 20,000 in / 1,000 out | $0.02 | $18.75 |
| Coding agent step | 50,000 in / 2,000 out | $0.04 | $45.00 |
Standard rates, no caching or batch discount. Compare your own numbers across all models →
Price history
| Date | Model | Change |
|---|---|---|
| 2026-09-02 | Gemini 3.8 Flash | New model listed: $0.75 in / $3.75 out source |
Dates are when each change first appeared in the LiteLLM price data, usually within days of the provider's announcement.
Details
| Provider | |
| Price tier | Standard |
| Features | Vision, Reasoning, Prompt caching, Tool use, PDF input, Web search |
| API model names | gemini-3.8-flash |
| Official pricing | ai.google.dev |
Models at a similar price
| Model | Input / 1M | Output / 1M |
|---|---|---|
| Grok Build 0.1 | $1.00 | $2.00 |
| Gemini 3.6 Flash | $0.75 | $3.75 |
| Gemini 3.7 Flash | $0.75 | $3.75 |
| Grok 4.20 | $1.25 | $2.50 |
| Grok 4.3 | $1.25 | $2.50 |
| GPT-5.4 Mini | $0.75 | $4.50 |
Other Google models
| Model | Input / 1M | Output / 1M |
|---|---|---|
| Gemini Deep Research Max Preview | $2.00 | $12.00 |
| Gemini Deep Research Pro Preview | $2.00 | $12.00 |
| Gemini 3.1 Pro Preview | $2.00 | $12.00 |
| Gemini 4 Argon | $2.00 | $10.00 |
| Gemini 2.5 Pro | $1.25 | $10.00 |
| Gemini 3.5 Flash | $1.50 | $9.00 |
| Gemini Omni Flash Preview | $1.50 | $9.00 |
| Gemini Omni 1.1 Flash | $1.50 | $9.00 |
| Gemini 3.6 Flash | $0.75 | $3.75 |
| Gemini 3.7 Flash | $0.75 | $3.75 |
| Gemini 3 Flash Preview | $0.50 | $3.00 |
| Gemini 2.5 Flash | $0.30 | $2.50 |
| Gemini 3.5 Flash Lite | $0.30 | $2.50 |
| Gemini 3.1 Flash Lite | $0.25 | $1.50 |
| Gemini 2.5 Flash Lite | $0.10 | $0.40 |