---
title: "Gemini 3.5 Flash API pricing: ⁨$1.50⁩ in, ⁨$9⁩ out · DotsAgent"
description: "Gemini 3.5 Flash by Google: price per million input, cached and output tokens, context window, agent features and what a real agent task costs on it."
url: https://dotsagent.io/models/gemini-3-5-flash
---

[Google](https://dotsagent.io/providers/google)

· Workhorse

# Gemini 3.5 Flash API pricing and specs

The Flash model that Gemini 3.8 Flash replaced at the top, now listed by Google as legacy.

Input

$1.50

Cached input

$0.15

Output

$9

US dollars per million tokens, standard tier, short-prompt rate

Until the end of 2026 it costs more than Gemini 3.8 Flash, which is on an introductory price, so there is little reason to start a new project on it.

## Spec sheet

- **API model string**: `gemini-3.5-flash`
- **Provider**: [Google](https://dotsagent.io/providers/google)
- **Context**: 1.05M tokens
- **Max output**: 66K tokens
- **Released**: May 19, 2026
- **Batch API**: 50% off, results within hours
- **Documented agent features**: Tool callingStructured outputComputer useBuilt-in web searchAdjustable reasoning

## What a task costs

Four reference workloads priced at this model's list rates, with caching applied after the first call. Your numbers will differ; the calculator lets you change every assumption.

| Workload | Per task | Per 1,000 tasks |
| --- | --- | --- |
| Support bot 4 calls, short tool lookups | $0.046 | $46 |
| Coding agent 30 calls, files and test output | $1.54 | $1,537 |
| Browser agent 25 calls, screenshots and page text | $1.06 | $1,062 |
| Research agent 15 calls, long search results | $1.03 | $1,026 |

[Change the assumptions](https://dotsagent.io/cost#model=gemini-3-5-flash)

## Other Google models

- [Gemini 3.8 Flash](https://dotsagent.io/models/gemini-3-8-flash): $0.75 / $3.75

- [Gemini 3.1 Pro Preview](https://dotsagent.io/models/gemini-3-1-pro-preview): $2 / $12

- [Gemini 3.5 Flash-Lite](https://dotsagent.io/models/gemini-3-5-flash-lite): $0.30 / $2.50

## Similar cost elsewhere

Models from other providers whose cost on the 30-step coding workload is closest to this one.

- [Qwen3.8-Max](https://dotsagent.io/models/qwen3-8-max): $1.63 per coding task

- [GLM-5.3](https://dotsagent.io/models/glm-5-3): $1.63 per coding task

- [GPT-6.1 Sol](https://dotsagent.io/models/gpt-6-1-sol): $1.69 per coding task

- [Grok 4.3](https://dotsagent.io/models/grok-4-3): $1.31 per coding task

## Sources

1. [ai.google.dev](https://ai.google.dev/gemini-api/docs/pricing)/gemini-api/docs/pricing
2. [ai.google.dev](https://ai.google.dev/gemini-api/docs/models/gemini-3.5-flash)/gemini-api/docs/models/gemini-3.5-flash
3. [blog.google](https://blog.google/innovation-and-ai/models-and-research/gemini-models/gemini-3-5/)/innovation-and-ai/models-and-research/gemini-models/gemini-3-5/

Independent reference for people who build AI agents. Not affiliated with any vendor named here.

© 2026 DotsAgent · Facts checked October 1, 2026