Fillo vs GreptimeDB

Detailed side-by-side comparison to help you choose the right tool

Fillo

🔴Developer

Developer Tools

Fillo lets coding agents add native, product-embedded forms while Fillo manages validation, uploads, submissions, versions, and delivery.

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Starting Price

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GreptimeDB

🔴Developer

Developer Tools

Open-source Observability 2.0 database for metrics, logs, and traces with an official MCP server for AI-assisted data querying.

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Starting Price

Custom
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Feature Comparison

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FeatureFilloGreptimeDB
CategoryDeveloper ToolsDeveloper Tools
Pricing Plans50 tiers6 tiers
Starting Price
Key Features
  • • Native React and framework-agnostic rendering without an iframe
  • • Visual-builder and code-defined forms with headless composition
  • • Conditional logic, multi-page flows, prefill, and respondent verification

    Fillo - Pros & Cons

    Pros

    • ✓Free includes the full SDK and core product features.
    • ✓Native rendering preserves product CSS and design-system control.
    • ✓Managed uploads, webhooks, response history, and integrations reduce backend work.
    • ✓Published EU hosting and security documentation help vendor review.

    Cons

    • ✗Free is limited to 200 completed responses per month.
    • ✗Paid overage charges make busy public forms more expensive.
    • ✗The platform adds a vendor dependency to a critical submission path.
    • ✗No native MCP server or client support was verified.

    GreptimeDB - Pros & Cons

    Pros

    • ✓Replaces three separate databases (Prometheus, Loki, Elasticsearch) with one — dramatically simpler operations
    • ✓Open-source with free self-hosted option and managed cloud tiers
    • ✓MCP server enables AI agents to query observability data with built-in safety guardrails
    • ✓50x cost reduction claims backed by real production deployments (Li Auto at 300TB)
    • ✓Speaks both SQL and PromQL — no forced migration away from existing query patterns

    Cons

    • ✗Relatively new project — smaller community compared to established tools like Prometheus or Elasticsearch
    • ✗GreptimeCloud usage-based pricing details not fully transparent on website
    • ✗MCP server primarily tested with Claude Desktop — broader MCP client compatibility may vary
    • ✗Requires migration effort from existing observability stacks with established dashboards and alerts
    • ✗Enterprise features (SSO, VPC) only available on custom-priced plans

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    Review FilloReview GreptimeDB