Curiosity · AI Model
Replit Code v3
Replit Code v3 is the 2025 in-house code model from Replit, powering Replit Agent (their autonomous full-stack app builder) and Ghostwriter (IDE completions). It is tuned for multi-file project generation inside the Replit cloud IDE, with tight coupling to the platform's package installer, deployment, and preview tools.
Model specs
- Vendor
- Replit
- Family
- Replit Code
- Released
- 2025-03
- Context window
- 128,000 tokens
- Modalities
- text, code
Strengths
- Tightly integrated with Replit's cloud IDE and deploy platform
- Handles multi-file project generation well
- Learns from a huge corpus of open Repls
Limitations
- Only useful inside the Replit platform (no external API for v3)
- Not competitive with GPT-5-Coder / Claude on SWE-bench heavy tasks
- Subscription-gated (Replit Core plan)
Use cases
- Full-stack prototype generation from natural-language prompts
- Live IDE completions in the Replit editor
- Teaching coding with scaffolded project generation
- One-click deploy pipelines for student projects
Benchmarks
| Benchmark | Score | As of |
|---|---|---|
| HumanEval | ~86% | 2026-04 |
| MultiPL-E | ~70% | 2026-04 |
| SWE-bench Lite | ~38% | 2026-04 |
Frequently asked questions
What is Replit Code v3?
Replit Code v3 is Replit's in-house code generation model, powering both Ghostwriter completions and the Replit Agent for full-stack app synthesis inside the Replit cloud IDE.
Can I use Replit Code v3 outside Replit?
Not directly. v3 is exposed only through Replit's product surfaces. Earlier replit-code-v1.5-3b weights are on HuggingFace for research.
Sources
- Replit Agent announcement — accessed 2026-04-20
- Replit on HuggingFace — accessed 2026-04-20