WunderGraph Cosmo

WunderGraph Cosmo is ranked #7 of 25 in GraphQL tools on The Geeks Club. It runs on API, Self-hosted, Web. There is a free plan. Paid plans start at $499/mo.

WunderGraph Cosmo plans and pricing

All plans

Developer Free Free forever 1 federated graph · 10M requests/month · 10 subgraphs · 1 team member · 7-day retention · community support wundergraph.com · 1 Oct 2026

Launch $499/mo $499 / month 2 federated graphs · 250M requests/month · 20 subgraphs · 10 team members · 14-day retention · email support wundergraph.com · 1 Oct 2026

Scale $3,499/mo $3499 / month 5 federated graphs · 1B requests/month · 100 subgraphs · 25 team members · 30-day retention · SSO/RBAC · 99% managed-service SLA wundergraph.com · 1 Oct 2026

Enterprise Not published Custom Custom graphs, requests, retention and subgraphs · unlimited team size · SCIM · dedicated solution architect · up to 99.99% SLA wundergraph.com · 1 Oct 2026

Compared on GraphQL tools

Free plan: Yes
Paid from: $499/mo
Deployment model: hybrid
Schema registry: Yes
API explorer: Yes
Operation testing: Yes
Server languages: Go, Python, Java, C#, Node.js, Rust

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WunderGraph Cosmo

Purpose: Cosmo is an open-source GraphQL Federation platform for platform teams that provides schema checks, guardrails and observability.
Protocols: Cosmo unifies GraphQL, REST, gRPC and Kafka under a single federated graph.
Federation compatibility: Cosmo supports Apollo Federation versions 1 and 2 and works with existing GraphQL services across frameworks and languages.
Router: Cosmo Router is a Go-based, Apache 2.0-licensed GraphQL federation router and gateway.
Deployment: The router can be self-hosted with Docker, Kubernetes or an AWS Lambda-optimized binary, or used through WunderGraph's managed service.
Schema governance: The Schema Registry provides composition, breaking-change, client-traffic and linting checks.
Subscriptions: Cosmo supports subscriptions over WebSockets and Server-Sent Events, plus event-driven subscriptions backed by Kafka, NATS, SQS or RabbitMQ.
Integrations: Cosmo Streams currently supports Kafka, NATS including JetStream, and Redis.
Observability: Cosmo provides OpenTelemetry tracing and Prometheus metrics, with support for exporting telemetry to compatible monitoring backends.
Security and compliance: The managed plans include SOC 2 and HIPAA compliance, while the site also identifies ISO 27001 certification.
Data privacy: The router has default configurations designed so sensitive request information is not sent to the control plane or analytics.
Support: Support ranges from Discord community support on Developer to email, private Discord, Microsoft Teams and dedicated solution-architect support on Enterprise.
Audience: Cosmo is positioned for teams scaling from their first subgraph to thousands of daily operations.
Company founding: WunderGraph was founded in 2020.
Price from: $499/mo

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Where it ranks on The Geeks Club

Best GraphQL Tools in 2026#7 of 25

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Sources

wundergraph.com/cosmo· checked 1 Oct 2026
wundergraph.com/blog/cosmo_router_high_performance_fede· checked 1 Oct 2026
wundergraph.com/cosmo/features· checked 1 Oct 2026
wundergraph.com/blog/announcing_edfs_event_driven_feder· checked 1 Oct 2026
wundergraph.com/pricing· checked 1 Oct 2026
wundergraph.com· checked 1 Oct 2026
techcrunch.com/2025/03/27/ebay-backs-wundergraph-to-bu· checked 1 Oct 2026