One agent session
1M input tokens and 100K output tokens, no caching.
- Input1M x $0.30 = $0.30
- Output0.1M x $2.50 = $0.25
$0.55per session
Google - Closed weights
Gemini 2.5 Flash pricing and specs
Gemini 2.5 Flash is a closed-weights model from Google that costs $0.30 per 1M input tokens and $2.50 per 1M output tokens on the first-party API, with a 1.05M-token context window.
Last verified from ai.google.dev. All sources
- Input / 1M
- $0.30
- Output / 1M
- $2.50
- Context
- 1.05M tokens
- Weights
- Closed
Pricing per 1M tokens
| Item | Price / 1M tokens |
|---|---|
| Input | $0.30 |
| Output | $2.50 |
| Cache read | $0.03 |
| Batch inputBatch requests | $0.15 |
| Batch outputBatch requests | $1.25 |
Note: Previous-generation model still sold and priced. Input and cached-input prices are for text / image / video; audio input is $1.00 (cached $0.1), Batch audio input $0.50. Context caching storage is $1.00 per 1M tokens per hour rather than a per-write fee, so cache write is not stated; Batch cached input is the same as Standard. Output price includes thinking tokens. Free tier available. Flex equals Batch; Priority is $0.54 / $4.50 / $0.054 cached. release date is the stable gemini-2.5-flash release in the Gemini API changelog (June 17, 2025).
Specs
- Context window
- 1,048,576 tokens
- Max output
- 65,536 tokens
- Release date
- Provider
- API model id
gemini-2.5-flash- Vercel AI Gateway id
google/gemini-2.5-flash- Weights
- Closed weights
What Gemini 2.5 Flash costs in practice
Worked from the standard list rates above, with the math shown so you can swap in your own token counts.
A chat app
10,000 requests a day at 2K input and 500 output tokens each.
- Input20M x $0.30 = $6.00
- Output5M x $2.50 = $12.50
$18.50per day
$555.00 per 30-day month
The same session at a 90% cache hit
90% of the input is read from the prompt cache. The one-time cache write premium is not included.
- Cached input0.9M x $0.03 = $0.027
- Uncached input0.1M x $0.30 = $0.03
- Output0.1M x $2.50 = $0.25
$0.307per session
Compare with
| Model | Input / 1M | Output / 1M |
|---|---|---|
| Gemini 2.5 Flash (this page) | $0.30 | $2.50 |
| Amazon Nova 2 LiteAmazon | $0.30 | $2.50 |
| Dola Seed 2.1 TurboByteDance Seed | $0.50 | $2.50 |
| Gemini 3.5 Flash-LiteGoogle | $0.30 | $2.50 |
| Grok 4.20xAI | $1.25 | $2.50 |
| Gemini 3 Flash PreviewGoogle | $0.50 | $3 |
| Gemini 3.1 Flash-LiteGoogle | $0.25 | $1.50 |
| Gemini 3.6 FlashGoogle | $0.75 | $3.75 |
| Gemini 3.8 FlashGoogle | $0.75 | $3.75 |
| Gemini 2.5 Flash-LiteGoogle | $0.10 | $0.40 |
Related reading
- Do Your Agent Hooks Fail Open? Claude Code vs Codex vs Cursor vs Gemini CLIA guard hook that crashes, times out or points at a missing script lets the tool call through by default in Claude Code. v2.1.295 adds onFailure: block. Here is what each coding agent does when your policy hook breaks, with real test runs.
- EmbeddingGemma 2 Guide: Local Multimodal Embeddings for CodeEmbeddingGemma 2 is a 740M open model that embeds code, images, video and audio in one space. Specs, Matryoshka storage math, and where it breaks.
- Google AI Pro vs Gemini API: What Developers Actually GetGoogle AI Pro costs $19.99 a month and has no API key, but includes $10 of monthly Cloud credits. When the subscription wins and when to pay per token.
- How to Keep API Keys Away From Your AI Coding Agent: Claude Code vs Codex vs Cursor vs Gemini CLIA deny rule on .env stops cat but not a Python one-liner. Here are the three layers that actually keep secrets out of a coding agent's context - file rules, environment scrubbing and credential masking - and what Claude Code, Codex, Cursor and Gemini CLI give you for each, with real test runs.
- Google Gemini Agent: Coworker Agents With Their Own EmailGoogle's Gemini agent can create coworker agents with their own Workspace account, email and audit trail. What Google announced and what builders should copy.
- Gemini 4 Argon: What Developers Can Actually UseGemini 4 Argon for developers: what Google shipped, what is verified, why access starts narrow, and what to watch before planning a migration around it.
FAQ
How much does Gemini 2.5 Flash cost per million tokens?
Gemini 2.5 Flash costs $0.30 per 1M input tokens and $2.50 per 1M output tokens on Google's first-party API, per ai.google.dev on October 17, 2026. Per 1M tokens, cache reads cost $0.03, and the batch rate is $0.15 input and $1.25 output.
What is Gemini 2.5 Flash's context window?
Gemini 2.5 Flash has a 1,048,576-token context window and returns up to 65,536 output tokens per response.
Are Gemini 2.5 Flash's weights open?
No. Gemini 2.5 Flash is a closed-weights model. You call it through Google's API as gemini-2.5-flash or through Vercel AI Gateway as google/gemini-2.5-flash.
When was Gemini 2.5 Flash released?
Google released Gemini 2.5 Flash on June 17, 2025.
Sources
Last verified from ai.google.dev.
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