Bolt.new
In-browser full-stack app builder running on WebContainers.
Full Bolt.new record →Head to head
Bolt.new vs Windsurf
Bolt.new (StackBlitz) and Windsurf (Cognition) both sit in Coding. Windsurf is the cheaper entry point at Free tier available, sign up for free. Paid plans exist (mention of paying users, Teams, and Enterprise ACU limits) but pricing is not published in the source.. Windsurf shipped more tracked changes in the last 30 days (14 vs 0). Every value below comes from the latest crawl of the vendors' own pages.
| Attribute | Bolt.new StackBlitz | Windsurf Cognition |
|---|---|---|
| Segment | Coding | Coding |
| Version | Bolt 2 | 3.10.27 |
| Entry cost | Free tier · from $20/mo | Free tier available, sign up for free. Paid plans exist (mention of paying users, Teams, and Enterprise ACU limits) but pricing is not published in the source. |
| Pricing tiers | — | Free free |
| Model stack | Claude Sonnet 4.5 | Cascade · Claude · Claude Fable 5.1 · Claude Sonnet 4.5 · Devin · Devin Local · Fast · Fusion · Gemini · GPT · GPT 5.2 Mini · GPT-5.2 · GPT-5.6 · Haiku · Kimi K2.5 · OpenAI frontier models · SWE 1.7 · SWE-1.5 · Ultra |
| Context window | — | Varies by model |
| Public API | ||
| Routes models | ||
| Changes / 30d | 0 | 14 |
| Origin | Global | Global |
| Capabilities | Full-stack scaffolding, In-browser runtime, One-click deploy | Cascade agent, Supercomplete, Live previews, Memories, Deploys, Devin Local Agent, Devin Cloud Agent, Cascade Agent |
Windsurf
An IDE whose Cascade agent tracks your actions and edits across the codebase.
Full Windsurf record →