Anchor launches b0.dev - New Agentic Browser Paradigm
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Today we’re launching b0.dev: A new paradigm for building browser agents that finally ships on production speed, cost and reliability.
Over the past year, the biggest bottlenecks of browser automation have been:
Speed - Too slow for real-time usecases
Performance - Not reliable enough for production
Cost - LLM costs explode at scale
B0.dev - Build-Time, Deterministic Browser Agents
b0.dev has changed this reality with a simple idea: Instead of having an agent do the task every single time, it uses coding agents to plan and deploy deterministic browser tasks, and only fall back to AI at runtime when it’s truly needed.
Why now
Two dots connected:
- Anchor built the best developer interface for anything that touches a browser.
- Coding agents became excellent at synthesizing small, composable scripts.
Together, they turn “Agentic browsing” into versioned, testable workloads you can ship and scale. This has also finally brought browser agents to the long desired state - Any browser task can now be easily converted to an API endpoint.
Before and after comparison
| Aspect | B0.dev | Standard Browser Agents |
|---|---|---|
| AI Usage | ✅ Build-time – Uses AI in planning phase to create a deterministic runtime workflow | Runtime – Uses AI in runtime every single time |
| Speed | ✅ X24 Faster – No LLM / Screenshots latency | Painfully slow |
| Reliability | ✅ Memorizes – Does the task the same way, every time | Flaky, can’t reliably do a 100 steps task |
| Cost | ✅ Cheap – X80 less tokens used per task completion | Expensive – Vision / DOM LLM processing |
How it work
- Plan once, codify: A coding agent generates a reusable script.
- Run fast: Deterministic flows execute without token-heavy loops.
- Edge cases & Fallbacks handling: Minimal runtime AI only for ambiguous steps, or whenever the user-interface changes.
What you get
- Speed: Real-time execution without reasoning overhead.
- Reliability: Scripted paths, fixtures, and observability by default.
- Cost control: Codify once → reuse everywhere; pay for AI only when it adds value.
b0.dev is available on Anchor now. Build agents that behave like software - fast, stable, and affordable. Start with b0.dev.
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