Coding · Head-to-head
Bolt.new vs DeepSeek Harness
Bolt.new vs DeepSeek Harness: pricing, features, and which to pick in 2026.
The verdict
Pick Bolt.new if…
- →you want our editor's pick for this category
- →your primary use case is developers building full-stack mvps and internal tools who want a working app with backend, database, and auth generated from a prompt with no local setup.
Pick DeepSeek Harness if…
- →budget is the constraint
- →your primary use case is developers who want an mit-licensed agent runtime they can recompose, and who will bring their own model keys.
- →you need: agents, productivity
Side-by-side specs
| Spec | Bolt.new | DeepSeek Harness |
|---|---|---|
| Category | Coding | Coding |
| Pricing model | freemium | free |
| Headline pricing | Freemium | Free (MIT). Inference is whatever model you plug in — DeepSeek V4-Flash and V4-Pro are the vendor pairing. |
| Free tier | Limited daily tokens with basic model access | The runtime is free. Model tokens are billed by whichever API you configure. |
| AI Score | 8.7/10 | 8.4/10 |
| Best for | Developers building full-stack MVPs and internal tools who want a working app with backend, database, and auth generated from a prompt with no local setup. | Developers who want an MIT-licensed agent runtime they can recompose, and who will bring their own model keys. |
| Editor's pick | ✓ Yes | — |
| Use cases | development | development agents productivity |
| Date added | 2026-04-30 | 2026-08-17 |
Pros and cons
Bolt.new
Coding · freemium
Pros
- ✓Zero-setup development — everything runs in the browser with no installs
- ✓Generates full-stack apps with backend, database, and auth out of the box
- ✓Live preview updates in real time as code is generated
- ✓Multiple AI model choices give flexibility for different coding tasks
Cons
- ×Limited to Node.js/web stack — no Python, Go, or native mobile support
- ×Free tier token limits are hit quickly on anything beyond simple apps
- ×Generated code for complex business logic often needs manual intervention
- ×WebContainers environment can feel slower than local development for larger projects
DeepSeek Harness
Coding · free
Pros
- ✓MIT-licensed; you can read and fork the loop
- ✓Plugin model means you are not stuck on DeepSeek weights
- ✓Launched next to V4-Pro, so the vendor's own agent scores have a named runtime
- ✓Local npx path, no hosted lock-in for the runtime itself
Cons
- ×Developer preview v0.1 as of August 13, 2026 — expect breakage
- ×You still pay for inference, and you assemble the stack
- ×Not a product with an SLA or a consumer UI beyond the local web mode
- ×"Rival to Claude Code" is press framing, not a documented feature-parity claim
Related comparisons
Updated 2026-08-17. Spec data sourced from official product pages and tracked in our public directory at /tools.