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Comparison · Infra & APIs
PlanetScale vs Cosmic
A side-by-side editorial comparison of PlanetScale and Cosmic — release velocity, themes, recent moves, and the top alternatives to consider.
PlanetScale vs Cosmic: at a glance
What is PlanetScale?
PlanetScale is giving Postgres users budgets, guardrails, and a read-only door for agents.
The changelog is dominated by Postgres reaching parity with, and then past, the Vitess side of the platform. Database Traffic Control introduced resource budgets for query traffic, with warning thresholds before enforced budgets bite; storage became configurable at database creation; the vectorscale extension landed; and a new GCP region opened in Eemshaven. Query Insights gained negated search terms across both engines, and an Insights-only variant of the MCP server shipped without query execution tools.
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.
PlanetScale vs Cosmic: editorial side-by-side
PlanetScale
0.0INFRA · APISDEVOPS
PlanetScale is giving Postgres users budgets, guardrails, and a read-only door for agents.
◆ Current state
The changelog is dominated by Postgres reaching parity with, and then past, the Vitess side of the platform. Database Traffic Control introduced resource budgets for query traffic, with warning thresholds before enforced budgets bite; storage became configurable at database creation; the vectorscale extension landed; and a new GCP region opened in Eemshaven. Query Insights gained negated search terms across both engines, and an Insights-only variant of the MCP server shipped without query execution tools.
◆ Where it's heading
PlanetScale is building the operational controls that decide whether a managed database is safe to hand to a large team. Traffic budgets, warning thresholds, storage checks before deploy requests and connection-level guardrails all address the same failure mode: one workload consuming the cluster. The Insights-only MCP variant applies that instinct to agents — give them observability and schema recommendations, withhold the ability to execute queries.
◆ Prediction
Expect Traffic Control to gain more granularity and for the Postgres offering to keep closing extension and region gaps. The scoped MCP server suggests further work on what agents are allowed to do rather than simply exposing more of the platform to them.
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 PlanetScale 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 PlanetScale 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.
See all PlanetScale alternatives → · See all Cosmic alternatives →
Recent activity from PlanetScale 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
- 17d agoCosmicSemantic Search: Find Content by Meaning
- 1mo agoCosmicAgents Can Now Manage Content Blocks
- 1mo agoCosmicA Simpler AI Surface: AI Studio Is Retiring ⚡
- 1mo agoCosmicSet Goals for Your Agents ⚡
- 2mo agoPlanetScaleQuery Insights negated search terms
- 3mo agoPlanetScaleNew GCP region: Eemshaven, Netherlands
- 3mo agoPlanetScaleIntroducing Database Traffic Control™: resource budgets for your Postgres query traffic.Learn more ⚡
- 3mo agoPlanetScaleConfigure Postgres storage at database creation
- 3mo agoPlanetScaleSign-up page fragment (no release content)
- 4mo agoPlanetScaleInsights-only MCP server
Frequently asked questions
What is the difference between PlanetScale and Cosmic?
They serve adjacent needs but don't currently overlap on shipped themes. Cosmic is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 PlanetScale better than Cosmic?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Cosmic is currently shipping more aggressively (velocity 5.0 vs 0.0), with 0 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 PlanetScale?
Top PlanetScale alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "PlanetScale alternatives" section above for the current picks, or visit /alternatives/planetscale 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.