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@predotdev

pre.dev

Long Horizon Coding Agent, and verified RL coding tasks for frontier AI labs.

pre.dev

pre.dev does two things.

1. The Long Horizon Coding Agent

It plans before it codes, remembers across sessions, and runs autonomously for hours, in the browser or your terminal. Every task lands as its own feature branch and pull request, verified against acceptance criteria, with a live preview.

2. RL coding tasks for frontier AI labs

pre.dev Labs builds and sells verified RL coding tasks for model post-training. Each task is made from a real commit in a licensed private production codebase and ships as a runnable Harbor environment with a graded verifier, a hidden reference solution and solver trajectories.

Also open source

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  1. perplexity_clone_predev perplexity_clone_predev Public

    Open sourced the perplexity clone created with pre.dev fastSpec vs cursor plan mode showdown

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  2. predev-api predev-api Public

    Official python and node api wrappers

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  3. Scope-Engine Scope-Engine Public

  4. browser-agents-benchmark browser-agents-benchmark Public

    Reproducible head-to-head benchmark: pre.dev Browser Agents vs Browser Use Cloud across 101 real-world browser tasks.

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  5. predev-terminal-bench-2.0 predev-terminal-bench-2.0 Public

    Open trajectories for pre.dev's Terminal-Bench 2.0 results — Haiku 4.5 41.6%, Sonnet 4.6 56.2%, pass@1, harbor harness.

  6. masthead masthead Public

    Open-source blog, newsletter and AI writing studio. A Ghost replacement on Cloudflare Workers.

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