Windmill
A workflow engine where the AI builds the scripts and the enterprise gates come down
Comparison · Infra & APIs
Expo vs Cosmic
A side-by-side editorial comparison of Expo and Cosmic — release velocity, themes, recent moves, and the top alternatives to consider.
Expo vs Cosmic: at a glance
| Feature | Expo | Cosmic |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 6.3 | 5.0 |
| Sparks · 30d | 1 | 0 |
| Top themes | react-native, eas, mcp, ci-cd | headless cms, agents, semantic search, model lineup |
| Last editorial update | 4h ago | 1h ago |
| Website | — | Visit → |
What is Expo?
Expo shut down its own coding agent and kept the MCP server — it wants to be the substrate.
Two SDK releases landed in quick succession, 56 in May and 57 at the end of June, alongside steady EAS work: Maestro test insights with flake detection, automated iOS device registration in Workflows, and a general availability date for EAS Observe. On the AI side the direction reversed — the Expo MCP Server became available on the free plan in May, and in July the Expo Agent closed beta ended with the project wound down. Entry bodies in this feed are thin, so specifics beyond the headlines are limited.
What is Cosmic?
Cosmic retired AI Studio and gave its agents goals — the CMS is becoming an agent runtime.
Six weeks of releases pull in one direction. AI Studio was retired and Cosmic's AI consolidated into three surfaces: Agents, Workflows, and Code. Agents gained goals described in plain language that they work toward on their own, running steps and checking in, plus write access to reusable rich-text Content Blocks rather than read-only reference. Semantic search embeds bucket objects into a vector index so content is retrievable by meaning. The two newest entries add Claude Opus 5 and Kimi K3 to the model lineup.
Expo vs Cosmic: editorial side-by-side
Expo
6.3INFRA · APIS
Expo shut down its own coding agent and kept the MCP server — it wants to be the substrate.
◆ Current state
Two SDK releases landed in quick succession, 56 in May and 57 at the end of June, alongside steady EAS work: Maestro test insights with flake detection, automated iOS device registration in Workflows, and a general availability date for EAS Observe. On the AI side the direction reversed — the Expo MCP Server became available on the free plan in May, and in July the Expo Agent closed beta ended with the project wound down. Entry bodies in this feed are thin, so specifics beyond the headlines are limited.
◆ Where it's heading
Expo is consolidating around the build, test, and observe pipeline it already owns and stepping back from competing on the agent itself. Making the MCP server free while retiring Expo Agent puts the company underneath whichever assistant a developer already uses, rather than asking them to adopt another one. EAS is where the commercial weight sits, and the recent releases all reduce the manual work between a commit and a working build on a device.
◆ Prediction
Expect EAS Observe's August general availability to anchor the next stretch, with AI effort staying on the MCP surface that connects outside assistants to Expo projects.
Cosmic
5.0INFRA · APIS
Cosmic retired AI Studio and gave its agents goals — the CMS is becoming an agent runtime.
◆ Current state
Six weeks of releases pull in one direction. AI Studio was retired and Cosmic's AI consolidated into three surfaces: Agents, Workflows, and Code. Agents gained goals described in plain language that they work toward on their own, running steps and checking in, plus write access to reusable rich-text Content Blocks rather than read-only reference. Semantic search embeds bucket objects into a vector index so content is retrievable by meaning. The two newest entries add Claude Opus 5 and Kimi K3 to the model lineup.
◆ Where it's heading
The content API is turning into a runtime agents operate inside: goals instead of prompts, write permissions instead of suggestions, and a vector index so an agent can find what it needs without being handed it. Retiring AI Studio is the clearest signal — Cosmic is choosing fewer, deeper surfaces over a menu of separate AI features, which is a harder position to reverse.
◆ Prediction
Expect agent write scope to extend past Content Blocks to objects and media, and goals to gain triggers or schedules so they run without a person starting them.
Alternatives to Expo and Cosmic
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Expo or Cosmic.
Pressable
Pressable is shipping near-daily, and MCP is being maintained as a peer surface to its API.
Pipedream
Pipedream put OAuth on its 10,000-tool MCP server and annotated every tool read or write.
VictoriaMetrics
Five of six VictoriaMetrics entries are scraped GitHub page furniture; one is a real LTS patch.
Buildkite
Buildkite is forcing a major agent upgrade and handing agents a shortcut through failures.
Statsig
Statsig is packaging its own workflows as skills for someone else's agent to run.
Recent activity from Expo and Cosmic
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoCosmicClaude Opus 5 Is Now Available in Cosmic
- 9d agoCosmicKimi K3 Is Now Available in Cosmic
- 10d agoExpoExpo Agent: ending the closed beta and winding the project down ⚡
- 10d agoExpoEAS Observe moves to general availability on August 20
- 17d agoCosmicSemantic Search: Find Content by Meaning
- 1mo agoExpoExpo SDK 57
- 1mo agoExpoMaestro testing: insights, clearer results, and faster retries
- 1mo agoCosmicAgents Can Now Manage Content Blocks
- 1mo agoCosmicA Simpler AI Surface: AI Studio Is Retiring ⚡
- 1mo agoCosmicSet Goals for Your Agents ⚡
- 1mo agoExpoAutomate iOS device registration for internal builds in EAS Workflows
- 2mo agoExpoThe Expo MCP Server is now available on the Free plan
Frequently asked questions
What is the difference between Expo and Cosmic?
They serve adjacent needs but don't currently overlap on shipped themes. Expo is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Expo better than Cosmic?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Expo is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Expo?
Top Expo alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Expo alternatives" section above for the current picks, or visit /alternatives/expo for the full list with editorial commentary on each.
What are the best alternatives to Cosmic?
Top Cosmic alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Cosmic alternatives" section above for the current picks, or visit /alternatives/cosmicjs for the full list with editorial commentary on each.