WunderGraph Cosmo
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About
WunderGraph Cosmo is ranked #4 of 25 in GraphQL tools on Inferse. It runs on API, Self-hosted, Web. There is a free plan. Paid plans start at $499/mo.
Compared on GraphQL tools
- Free plan
- Yeswundergraph.com
- Paid from
- $499/mowundergraph.com
- Deployment model
- hybridwundergraph.com
- Schema registry
- Yeswundergraph.com
- API explorer
- Yeswundergraph.com
- Operation testing
- Yeswundergraph.com
- Server languages
- Go, Python, Java, C#, Node.js, Rustwundergraph.com
Facts
- Purpose
- Cosmo is an open-source GraphQL Federation platform for platform teams that provides schema checks, guardrails and observability.wundergraph.com · 1 Oct 2026
- Protocols
- Cosmo unifies GraphQL, REST, gRPC and Kafka under a single federated graph.wundergraph.com · 1 Oct 2026
- Federation compatibility
- Cosmo supports Apollo Federation versions 1 and 2 and works with existing GraphQL services across frameworks and languages.wundergraph.com · 1 Oct 2026
- Router
- Cosmo Router is a Go-based, Apache 2.0-licensed GraphQL federation router and gateway.wundergraph.com · 1 Oct 2026
- Deployment
- The router can be self-hosted with Docker, Kubernetes or an AWS Lambda-optimized binary, or used through WunderGraph's managed service.wundergraph.com · 1 Oct 2026
- Schema governance
- The Schema Registry provides composition, breaking-change, client-traffic and linting checks.wundergraph.com · 1 Oct 2026
- Subscriptions
- Cosmo supports subscriptions over WebSockets and Server-Sent Events, plus event-driven subscriptions backed by Kafka, NATS, SQS or RabbitMQ.wundergraph.com · 1 Oct 2026
- Integrations
- Cosmo Streams currently supports Kafka, NATS including JetStream, and Redis.wundergraph.com · 1 Oct 2026
- Observability
- Cosmo provides OpenTelemetry tracing and Prometheus metrics, with support for exporting telemetry to compatible monitoring backends.wundergraph.com · 1 Oct 2026
- Security and compliance
- The managed plans include SOC 2 and HIPAA compliance, while the site also identifies ISO 27001 certification.wundergraph.com · 1 Oct 2026
- Data privacy
- The router has default configurations designed so sensitive request information is not sent to the control plane or analytics.wundergraph.com · 1 Oct 2026
- Support
- Support ranges from Discord community support on Developer to email, private Discord, Microsoft Teams and dedicated solution-architect support on Enterprise.wundergraph.com · 1 Oct 2026
- Audience
- Cosmo is positioned for teams scaling from their first subgraph to thousands of daily operations.wundergraph.com · 1 Oct 2026
- Company founding
- WunderGraph was founded in 2020.techcrunch.com · 1 Oct 2026
Best WunderGraph Cosmo alternatives
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7.4 Apollo Client $5/mo first paid tier Free plan 
7.4 Apollo Studio $5/mo first paid tier Free plan 
7.4 GraphQL Hive $20/mo first paid tier Free plan 
7.3 Strawberry GraphQL Free free plan, no paid price published Free plan 
7.2 Hot Chocolate Free free plan, no paid price published Free plan 
6.0 Altair GraphQL Client See plans price on the maker's page Free plan Where it ranks on Inferse
- Best GraphQL Tools in 2026#4 of 25
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