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Keel vs Manifest
Keel is a full backend platform for apps, while Manifest is specialized for LLM request management and routing.
KeelThe backend for your apps, the tools for your teams
ManifestA complete backend in a single YAML fileWhich to pick
Pick Keel if you want…
- Code-first backend with built-in internal tools
- General app backend
- Integrations with VSCode extension (on Keel's list, not Manifest's)
Pick Manifest if you want…
- Auto-fixing LLM requests
- Integrations with OpenAI, Anthropic or Google (on Manifest's list, not Keel's)
Side by side
- What it is
- Keel:Keel provides a code-first backend platform with instant internal tools, schema-driven APIs, and full-stack operations features.
- Manifest:Manifest is an LLM gateway that routes requests, auto-fixes bad calls, provides fallbacks and observability.
- Best for
- Keel:Code-first backend with built-in internal tools
- Manifest:Auto-fixing LLM requests
- Who it’s for
- Keel:Engineers building operational backends and internal tools for fast-moving teams
- Manifest:Developers building AI-enabled apps who need reliable LLM routing and monitoring.
- Pricing
- Keel:Contact sales
- Manifest:Freemium
- Plans
- Keel:—
- Manifest:Free $0/month · Pro $19/month
- Open source
- Keel:Yes
- Manifest:Yes
- Works with
- Keel:VSCode extension
- Manifest:OpenAI, Anthropic, Google, DeepSeek, AWS Bedrock, Claude, Gemini, Mistral
Keel features
- Schema-driven data model. Define data models, actions, and permissions in a clear schema that generates APIs and internal tools.
- TypeScript extensions. Write custom functions, jobs, and durable functions in TypeScript with full type safety.
- Version-controlled environments. Create multiple environments, branch deployments, and PR previews with audit trails.
- Built-in testing framework. Generate type-safe end-to-end tests from the schema for actions, functions, and jobs.
- Instant internal tools. Automatically generate UI tools for ops teams that stay in sync with schema changes.
- Serverless infrastructure. Managed, multi-region PostgreSQL and serverless runtime scales from first to millionth user.
Manifest features
- Single-endpoint routing. Access all models and providers through one unified endpoint.
- Autofix. Automatically repairs malformed or failed LLM requests on the fly.
- Fallback handling. Routes to alternative providers when the primary model is down.
- Observability dashboard. Tracks request count, tokens, cost and success rates per model.
- Provider agnostic. Connect any usage-based or subscription LLM provider via API keys.
- Self-hostable Docker image. MIT-licensed Docker image lets you run Manifest on-premise with no request limits.
Keel vs Manifest FAQ
Is Keel or Manifest free?+
Manifest has a free plan; paid plans start at $19/month (Pro).
Is Keel or Manifest open source?+
Yes, both are open source: Keel (teamkeel/keel on GitHub) and Manifest (mnfst/manifest on GitHub).
Do Keel and Manifest integrate with the same tools?+
Their integration lists don't overlap: Keel lists VSCode extension; Manifest lists OpenAI, Anthropic, Google, DeepSeek and 9 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.