Bullet is an ultra-fast coding agent designed specifically to eliminate the frustrating lag times commonly experienced with traditional agent runs. Built by Yale CS graduates with backgrounds at AppLovin and Citadel, the tool addresses the core issue that while foundational AI models are strong, the execution loops surrounding them have historically been too slow.

By intelligently auto-picking the optimal model and reasoning level for each individual prompt, Bullet dramatically accelerates developer workflows. It achieves unmatched efficiency by parallelizing searches, reads, and commands, while utilizing targeted code search instead of heavy full-repository embeddings. Delivering a remarkable 95.8% on SWE-bench Verified (placing it in the top 3) with an average speed of 119 seconds per task, Bullet is engineered to be 30-60% faster than alternative solutions like Claude Code and Codex.

Designed with flexibility in mind, Bullet seamlessly integrates with your existing Claude Code or Codex subscriptions, standard API keys, or even fully on-device models.

Pros of Bullet

30-60% faster execution compared to Claude Code and Codex
High benchmark performance with 95.8% on SWE-bench Verified (Top 3)
Intelligently auto-picks the right model and reasoning level per prompt
Uses targeted code search instead of embedding your entire repository
Works with existing subscriptions, API keys, or on-device models

Cons of Bullet

Relies on the availability and performance of external subscriptions or API keys if not using an on-device model
Specific advanced configuration may be required to optimize parallel searches and commands
Niche developer tool primarily optimized for speed and coding loops

Frequently Asked Questions

What is Bullet?

Bullet is a coding agent built specifically for speed, designed to eliminate slow execution loops around AI models by parallelizing tasks, using targeted code search, and auto-picking the right model and reasoning level per prompt.