Free
Free
Site and docs state the extension is free to install; users pay only their chosen LLM provider usage.
- Access
- Site and docs state the extension is free to install; users pay only their chosen LLM provider usage.
Nanobrowser
● Identity checkedCode · Vendor site 2026-10-04
Nanobrowser is an open-source Chrome extension that runs a multi-agent AI web automation stack inside the user's browser. Documentation describes a privacy-focused alternative to OpenAI Operator where users bring their own LLM API keys, automate workflows from a side panel, and keep credentials local.
- Category
- Code
- Free access
- Site and docs state the extension is free to install; users pay only their chosen LLM provider usage.
- API access
- Supports connecting OpenAI, Anthropic, Gemini, Ollama, and custom OpenAI-compatible providers via user-supplied API keys.
Is Nanobrowser right for you?
A good fit for
Developers and power users who want local browser-based web agents without a hosted automation subscription.
Before you choose
Automation quality and cost depend on whichever external LLM providers and API keys the user configures.
Open-source browser agent
Nanobrowser markets itself as a free, local-first web automation extension with flexible LLM options and an interactive side-panel chat interface.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Multi-agent workflows | Docs describe specialized agents collaborating on complex web workflows from a browser side panel. | Facts sourced | 2026-10-04 |
| Local privacy model | Documentation emphasizes local browser execution with credentials staying on the user's machine. | Facts sourced | 2026-10-04 |
| Chrome distribution | Quick start instructs users to install Nanobrowser from the Chrome Web Store. | Facts sourced | 2026-10-04 |
Understand the total cost
Nanobrowser pricing & plans
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Frequently asked questions
What is Nanobrowser?
The homepage FAQ introduces Nanobrowser as an open-source AI web agent Chrome extension that runs multi-agent workflows with your own LLM API key.
What models are supported?
Documentation notes support for OpenAI, Anthropic, Gemini, Ollama, and custom OpenAI-compatible providers, with more planned.
What is Nanobrowser used for?
Nanobrowser is an open-source Chrome extension that runs a multi-agent AI web automation stack inside the user's browser. Documentation describes a privacy-focused alternative to OpenAI Operator where users bring their own LLM API keys, automate workflows from a side panel, and keep credentials local.
Does Nanobrowser have a free plan?
Site and docs state the extension is free to install; users pay only their chosen LLM provider usage.. This record lists ongoing free access; check the plan limits before starting.
How much does Nanobrowser cost?
No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use Nanobrowser through an API?
Supports connecting OpenAI, Anthropic, Gemini, Ollama, and custom OpenAI-compatible providers via user-supplied API keys.. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Automation quality and cost depend on whichever external LLM providers and API keys the user configures.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.