Windsurf
Windsurf is a proprietary IDE plug-in for AI-assisted coding, built by Codeium (released 2024-11). Windsurf integrates with 5 verified models, including Claude Sonnet 4.6, Gemini 2.5 Pro, and GPT-4.1. Pricing starts at Freemium; Pro at $15/mo. It runs as an extension in VS Code and JetBrains IDEs, pairing editor context with chat, completions, multi-file edits, and code review workflows for daily development.
Overview
Agentic IDE with a 'Cascade' agent that maintains awareness of the full development flow and can autonomously plan and execute multi-step coding tasks.
Best LLMs for this agent
Primary Cascade model
Pricing and Provider Comparison
Hosted agents expose plan pricing. Bring-your-own-key agents pass the main cost through the model provider route you configure.
Agent access tiers
| Tier | Price | Includes |
|---|---|---|
| Free | Free | 25 prompt credits/mo, 5 Cascade sessions/day, unlimited tab completions |
| Pro | $20/mo | Higher prompt credits, all models, Cascade multi-file editing |
| Max | $200/mo | Fast Context, Codemaps, Cascade, highest quotas |
| Teams | $40/mo | Admin analytics, knowledge base, centralized billing |
| Enterprise | Custom | SSO, RBAC, hybrid deployment, SOC 2 and HIPAA compliance |
Featured Model Specs
| Model | Lab | Released | Context | Reasoning | Open source |
|---|---|---|---|---|---|
| Claude Sonnet 4.6 | Anthropic | 2026-02-17 | 1m | Yes | No |
| Gemini 2.5 Pro | Google DeepMind | 2025-06-17 | 1m | Yes | No |
| GPT-4.1 | OpenAI | 2025-04-01 | 1.05m | No | No |
| DeepSeek R1 | DeepSeek | 2025-01-20 | 128k | Yes | Yes |
| GPT-4o (2024-11-20) | OpenAI | 2024-11-20 | 128k | No | No |
Model Compatibility Matrix
| Model | Lab | Default | Access tier | Notes |
|---|---|---|---|---|
| Claude Sonnet 4.6 | Anthropic | Yes | Pro | Primary Cascade model |
| Gemini 2.5 Pro | Google DeepMind | No | Pro | — |
| GPT-4.1 | OpenAI | No | Pro | — |
| DeepSeek R1 | DeepSeek | No | Pro | — |
| GPT-4o (2024-11-20) | OpenAI | No | Pro | — |
Underlying Models
Compare to Similar Harnesses
FAQ
What is Windsurf?
Windsurf is a proprietary IDE plug-in for AI-assisted coding, built by Codeium (released 2024-11). It runs as an extension in VS Code and JetBrains IDEs, pairing editor context with chat, completions, multi-file edits, and code review workflows for daily development. It is primarily used for pair programming, code review, and repository-aware edits inside an editor.
What models does Windsurf support?
Windsurf runs Claude Sonnet 4.6, Gemini 2.5 Pro, GPT-4.1, DeepSeek R1, GPT-4o (2024-11-20).
How much does Windsurf cost?
Windsurf costs Freemium; Pro at $15/mo.
Is Windsurf open source?
No, Windsurf is a proprietary IDE plug-in.
What are alternatives to Windsurf?
Alternatives include Cursor, Zed, and JetBrains AI Assistant.
When was Windsurf released?
Windsurf was released in 2024-11.