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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 teamsManifestA complete backend in a single YAML file

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:—
Manifest:Yes, 7,549 GitHub stars
Works with
Keel:VSCode extension
Manifest:OpenAI, Anthropic, Google, DeepSeek, AWS Bedrock, Claude, Gemini, Mistral
DevHunt upvotes
Keel:46
Manifest:3
Launched on DevHunt
Keel:Mar 2024
Manifest:Jun 2025

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.
Keel on DevHunt →Alternatives

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.
Manifest on DevHunt →Alternatives

Based on each tool's website and DevHunt data. Details may change; check the official sites.