the SDK for browser agents, built by @browserbase join the discord: https://xitter.cf/t.co/Q5UxzlgTft

chrome devtools
Joined February 2025
Introducing our Browser Agent Evals. We benchmark frontier and open models using various harnesses on computer-use tasks. Our evals are fully open source and reproducible via our Evals CLI.
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Stagehand retweeted
To do real work on your behalf, agents need to sign-in securely. We’re excited to partner with 1Password so your agents can log in without ever seeing your passwords. Agents request a login, you approve it in 1Password, then credentials are sent directly to the browser.
Today we announce 1Password for Agents platform, building with companies @Muse, SpaceX Super Intelligence Grok @Bot, @AnthropicAI’s @Claudeai, @OpenAI, @TownAI, @Browserbase, @Browser_use, @heydana_ai, Instinct, @usekernel, @Perplexity_ai, @tryramp, @Tomo, and @wajo_ai, with more integrations on the way. 🎉 We've heard from so many of our customers who want to use these new personal AI agents to help them get more done, but want more control over what the agent can access with the same trust and ease of use they get when using 1Password directly. 1Password for Agents gives your agents access without giving up your passwords. When an agent reaches a sign-in form, it requests a credential from your vault. If you approve the request, 1Password directly auto-fills the credential in the destination site so the agent can’t see or take possession of the credentials. The agent gets the task done, but it doesn’t get your passwords.. You stay in control. 1Password for Agents free and optional for personal and family accounts. Unless you opt-in to an agent connector, agents cannot touch your vault. ➡️Learn more: bit.ly/487da6J
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You can extract typed data from any website using @pydantic and Stagehand. Using Pydantic's enforced typing and Stagehand's structured extract, you can build robust and self-healing web scraping pipelines. Read our full blog post below.
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Stagehand retweeted
New ship on browse.sh - record mode! -> fire up a browser session -> show your agent what to do, click-by-click -> hit export to download your finished workflow you get a SKILL.md your agent can follow, plus scripts for @Stagehanddev, Playwright, or Puppeteer.
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Stagehand retweeted
Browserbase Search is now powered by Parallel (@p0) as the default search provider. Parallel Fast returns sub-second results when speed matters. Parallel Advanced goes deeper for multi-step research when quality matters most.
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Gemini 4 Argon is live in Stagehand. It outperforms Fable 5.1 on computer use tasks with @eve and @pidotdev harnesses, while being roughly around the same cost/speed. You can try the model in our playground at gemini.browserbase.com.
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Stagehand retweeted
We're sponsoring the AI Assistant meetup on Monday October 19th @ 7:30pm. Come meet other builders and hear from teams building the infra powering the fastest growing assistants on the market. Link to RSVP below.
Pumped to announce 4 more sponsors for the SF AI Assistant meetup! > @thelinqapp > @browserbase > @crossmint > @mem0ai RSVP: luma.com/wabd65c0 More details on the agenda to come
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Stagehand retweeted
Coolest new feature in Stagehand - we can now automatically detect & invoke WebMCP tools on the fly. This unlocks interacting with all @stripe checkout pages without repeatedly polling for new tools. Give it a try on 4.2!
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Claude 5.5 Haiku is on par with GPT 6 Luna from OpenAI on accuracy and speed, but is 3x the cost per task. As computer use improves, most gains will show up on the Pareto frontier: maintaining high accuracy while also being faster and cheaper.
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Stagehand supports @ClaudeDevs' new Tool SDK, converting model actions into browser actions. Follow our quickstart guide to build your first browser agent with Claude and Stagehand. github.com/browserbase/claud…
Computer use and browser use toolsets are now built into the Python and TypeScript SDKs for Claude. The API tells you what Claude wants to click or type. Previously, you had to write your own loop and map clicks and keystrokes to commands, but the SDKs now run the loop and send actions to drivers.
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Computer use models are getting really fast. Opus 5 (released in July '26) averages 678s per task while newer models like Opus 5.5 average 326s, ~2x speed up. See the speed up for yourself across 72 model x harness combinations at stagehand.dev/evals
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Stagehand retweeted
How do you actually build an effective harness with Claude? We had Thariq (@trq212) from Anthropic at Navigate 2026 to talk about "Unhobbling Claude", the difficulties and processes on how to build agents and harnesses.
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