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Compare/bolt.diy vs Emergent

bolt.diyvsEmergent

Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.

bolt.diy
stackblitz-labs community · Web app builder
#73OSSMCP
Panel
5.5
6 spec wins
Reliability
5.0
Usefulness
5.3
Cost
6.7
Longevity
5.0

“Started life as oTToDev, which remains the best name anything on this board has given up.”

Emergent
Emergent · Web app builder
#161MCP
Panel
5.1
2 spec wins
Reliability
4.5
Usefulness
5.7
Cost
4.7
Longevity
5.7

“Promises no DevOps hassle, then bills in credits, which is DevOps hassle with a nicer font.”

Spec by spec

Specbolt.diyEmergent
Architecture
CategoryWeb app builderWeb app builder
Runslocal, sandboxcloud
Platformsmacos, linux, windows, webweb
Context windownot documentednot documented
Protocols
MCP clientYesYes
MCP serverNoNo
Capabilities
Runs terminal commandsYesNo
Multi-file editsYesYes
Git operationsYesYes
Browser controlNoYes
Sandboxed executionNoNo
Multi-agent orchestrationNoYes
Headless / CI modeNoNo
Models
BackboneOpenAI, Anthropic, Gemini, Ollama, OpenRouter, any of 19 providersClaude, GPT, Gemini
Bring your own modelYesNo
Local modelsYesNo
Cost
Pricing modelbyoksubscription
Starts at$0/mo$17/mo
Free tierYesYes
Bring your own keyYesNo
Openness
Open sourceYesNo
LicenseMITproprietary
GitHub stars19,929n/a

Which one would each critic pick

Criticbolt.diyEmergentPick
El Juez——not enough reviews
El Amigo6.05.8bolt.diy — Pick bolt.diy if you want Bolt without the credit meter and can live inside a browser sandbox that only runs JavaScript; pick Dyad if you want a desktop builder with a real local project.
El Crítico5.55.3bolt.diy — The MIT fork sits on the WebContainer API, which needs a commercial license for production commercial use, so the open part is the UI and the proprietary part is the runtime.
El Profesor5.35.3no preference
La Inversora4.06.0Emergent — YC S24, $70M from SoftBank and Khosla in 2026, and a $200 Pro tier; the money says platform, the pricing says a few heavy users will pay for the free ones.
La Jefa4.54.5no preference
El Hacker7.84.0bolt.diy — MIT, keys in .env.local, nineteen providers including Ollama and LM Studio for a fully local run, MCP servers, and docker compose --profile development; this is the Bolt I would run.

Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.

Want a third column? The compare tool handles any two agents. Three-way comparisons are on the roadmap once the spec rows are all verified.