OB-1 is a frontier, self-improving coding agent. Now available for general access!
Joined November 2022
- Tweets 460
- Following 0
- Followers 6,795
- Likes 232
154 Photos and videos
Mar 26
One setup in the dashboard.
After that:
→ any engineer
→ any CLI session
→ any agent
can securely use those connections.
Here’s OB-1 fixing issues directly from @sentry ↓
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Mar 20
RT @daljeet_v: Benchmarks, Accountability, and What Matters
Our Terminal Bench submission did not meet the standard we set for ourselves.…
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Mar 13
OB-1 now supports BYOK!
Just add your keys from OpenAI or Anthropic and you're ready to go.
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Mar 13
Introducing PM Mode in OB-1!
Run /init-pm and OB-1 will analyze your integrations to learn how your company works.
Switch to PM Mode (shift tab), and you'll never run out of ideas on what to build.
See it in action for OpenClaw 👇
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Mar 13
The OB-1 free tier is back up with $10/day in credit!
We onboarded ~10k users yesterday, which briefly strained the system. After removing some spam accounts, everything is running normally again.
If you are running into issues, please report via /bug in CLI or joining Slack.
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OpenBlock retweeted
Mar 3
Your coding agent just got its own computer.
ob1 --sandbox
Powered by Modal.
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OpenBlock retweeted
Mar 9
The best coding agents don’t just write code, they ship it 🚀
All OB-1 sessions now include the @Vercel CLI as a preloaded skill: deploy, preview, and manage projects without leaving the agent.
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Mar 12
Here’s where OB-1 is going:
– Auto-generates evals from past PRs, then climbs them with custom models
– Builds its own skills, hooks, and rules from a codebase and session history
– Background agents in safe sandboxes that keep working while you context-switch
– Session sharing and forking: redefining version control around prompts, instead of source code
– Lives where you already work: Slack, Linear, GitHub, Graphite
– PM mode so it never runs out of ideas
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Mar 12
Today’s coding agent teams still employ hundreds of human engineers, which we find telling.
We’ve kept our team small, consisting entirely of IOI/IMO medalists, to make one bet: OB-1 will build OB-1 faster than any human team.
We’re just getting started. Be sure to follow @openblocklabs for future updates.
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Mar 9
The best coding agents don’t just write code, they ship it 🚀
All OB-1 sessions now include the @Vercel CLI as a preloaded skill: deploy, preview, and manage projects without leaving the agent.
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Mar 9
2/ OB-1 is a self-improving coding agent currently in beta. It placed #1 on Terminal Bench in September.
We’re letting people off the waitlist each day - join here: openblocklabs.com/waitlist
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Coding agents 💚 Modal Sandboxes
Mar 3
Your coding agent just got its own computer.
ob1 --sandbox
Powered by Modal.
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Mar 3
Your coding agent just got its own computer.
ob1 --sandbox
Powered by Modal.
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Mar 3
2/ Most coding agents run directly on your machine: eating memory, slowing your computer down, and even crashing your terminal.
--sandbox moves all of that off your laptop and into an isolated cloud environment on @modal
Your agent gets its own machine with your repo and local environment cloned instantly.
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Mar 3
3/ OB-1 is a self-improving coding agent currently in beta. It placed #1 on Terminal Bench in September.
We’re letting people off the waitlist each day. Join here: openblocklabs.com/waitlist
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OpenBlock retweeted
Feb 6
OB-1 now reads .agents/skills
One shared skills folder, usable across agents.
@openblocklabs @openai @embirico @tibo
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OpenBlock retweeted
19 Nov 2025
I’ll be at NeurIPS in San Diego this year!
Reach out if you want to talk about coding agents ( our upcoming CLI launch @openblocklabs), domain-specific RL, open-source.
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OpenBlock retweeted
31 Oct 2025
So much fun hosting the CMU builder night tonight; packed with demos, energy, and great people.
Gave a sneak peek of @openblocklabs' upcoming CLI agent, OB-1!
s/o @waynesutton @convex for the space :)
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