manifest.build
Open source LLM router connecting AI agents to any provider.
- Freemium· from $19/month
- Web
- API Available
- Open Source
What is manifest.build?
manifest.build is a Model Routing tool. Open source LLM router connecting AI agents to any provider. manifest.build is freemium: it has a free plan, and paid plans start at $19/month. It is available on Web App, Windows, macOS and Linux. It is aimed at ai builders, teams & startups and platforms & providers.
Open source LLM router that connects AI agents to any provider. Supports subscriptions, pay-per-token, local models, and custom providers.
Built for ai builders, teams & startups and platforms & providers.
Features
AI Builders
Teams & Startups
Platforms & Providers
Model Fallbacks
Full Body Logs
Autofix
Self-Host
Local Models
Easy Parameter Setup
Cost Visualization
Built in the Open
Use cases
- Connect AI agents to any provider
- Manage subscriptions and pay-per-token models
- Support local models and custom providers
Who it's for
- AI Builders
- Teams & Startups
- Platforms & Providers
Pros & cons
Pros
- Public API available
- Free plan available
- Integrates with OpenAI, Anthropic
Cons
No documented limitations yet.
Pricing
Freemium — paid plans start at $19/month.
| Plan | Price |
|---|---|
| Free | Free |
| Pro | $19 / month |
AI models
- GPT 5
- Claude Opus 5
- Gemini 3.6 Flash
- DeepSeek V4.1
Developer & API
Public REST API available
- Authentication
- API Key, Bearer Token
Open source
Security & compliance
- SSO
- SAML
- Encryption
- Data deletion
As stated on manifest.build's website — not independently verified by AiByts.
FAQ
What is manifest.build?
manifest.build is a Model Routing tool. Open source LLM router connecting AI agents to any provider. Open source LLM router that connects AI agents to any provider. Supports subscriptions, pay-per-token, local models, and custom providers.
Is manifest.build free?
manifest.build has a free plan; advanced features require a paid plan.
How much does manifest.build cost?
manifest.build offers 2 plans: Free (Free) and Pro ($19 / month).
Does manifest.build have an API?
Yes, manifest.build offers a public REST API for building custom integrations.
What platforms does manifest.build support?
manifest.build is available on Web App, Windows, macOS and Linux.
Who should use manifest.build?
manifest.build is built for ai builders, teams & startups and platforms & providers. Common uses: connect AI agents to any provider, manage subscriptions and pay-per-token models and support local models and custom providers.
What does manifest.build integrate with?
manifest.build integrates with OpenAI and Anthropic.
Is manifest.build open source?
Yes, manifest.build is open source.
What are the best alternatives to manifest.build?
Similar tools on AiByts include PromptLayer, HandyAI, Twigg, Oracle AI and GPT4All.
manifest.build news & updates
Details are compiled from manifest.build's website and public sources, last verified Oct 3, 2026. Features and pricing change — confirm on the official site before you buy.
Try manifest.build
Freemium · from $19/month
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