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Comparison · Analytics
Cortex vs MotherDuck
A side-by-side editorial comparison of Cortex and MotherDuck — release velocity, themes, recent moves, and the top alternatives to consider.
Cortex vs MotherDuck: at a glance
What is Cortex?
Cortex 1.22 is on its fourth candidate, with sharded Parquet and years of deprecated flags removed.
Cortex 1.22.0 has been in release candidates since 12 September, reaching rc.3 on 6 October, and GitHub shows no final yet. The candidate adds sharded Parquet conversion and querying, resource-based query eviction that cancels the heaviest query when CPU or heap crosses a threshold, OCI Object Storage as a backend, and an active-series tracker per tenant. It also removes long-deprecated flags and config fields, some of which now stop Cortex from starting if left in place.
What is MotherDuck?
MotherDuck rebuilds its UI so the first thing you see is an agent, not a SQL editor.
MotherDuck ships a weekly changelog. The November 3 release redesigns the UI around Agent Chat: Home opens with a prompt where the agent answers questions, loads data with Flights, saves context in Guides and builds Dives, with confirmation before destructive operations. Admins can enable web search for the agent, Agent Chat runs inside Dive presentation mode, and Enterprise orgs get one login across linked organizations. October filled out governance with row- and column-level security and Flight run grants.
Cortex vs MotherDuck: editorial side-by-side
Cortex
2.5ANALYTICS
Cortex 1.22 is on its fourth candidate, with sharded Parquet and years of deprecated flags removed.
◆ Current state
Cortex 1.22.0 has been in release candidates since 12 September, reaching rc.3 on 6 October, and GitHub shows no final yet. The candidate adds sharded Parquet conversion and querying, resource-based query eviction that cancels the heaviest query when CPU or heap crosses a threshold, OCI Object Storage as a backend, and an active-series tracker per tenant. It also removes long-deprecated flags and config fields, some of which now stop Cortex from starting if left in place.
◆ Where it's heading
The storage arc toward Parquet continues: after 1.21 made Parquet a Store Gateway query mode, 1.22 shards files that exceed column limits. A second arc is protecting shared clusters from heavy tenants, through query eviction, resource-based throttling and concurrent data-byte limits on store gateways. The cleanup is the maturity arc from 1.21 carried further: no-op flags that were tolerated for releases now fail at startup.
◆ Prediction
1.22.0 final should follow rc.3, which added only two fixes. Operators should expect upgrade failures from leftover deprecated flags, and the release notes tell them to grep runtime configs before upgrading.
MotherDuck
6.3ANALYTICS
MotherDuck rebuilds its UI so the first thing you see is an agent, not a SQL editor.
◆ Current state
MotherDuck ships a weekly changelog. The November 3 release redesigns the UI around Agent Chat: Home opens with a prompt where the agent answers questions, loads data with Flights, saves context in Guides and builds Dives, with confirmation before destructive operations. Admins can enable web search for the agent, Agent Chat runs inside Dive presentation mode, and Enterprise orgs get one login across linked organizations. October filled out governance with row- and column-level security and Flight run grants.
◆ Where it's heading
The arc runs from SQL warehouse to agent-driven data app platform: Flights went GA, Dives gained write-back, Agent Chat learned to build Dives, and now the agent is the front door. Governance work runs in parallel so the agent operates inside admin controls. AI pricing is moving too, with cheaper OpenAI-backed functions and billing for prompt_jev().
◆ Prediction
Expect Agent Chat to gain more admin controls and usage-based pricing detail, given web search and the agent both ship as admin toggles on paid plans. SQL-first features will likely keep arriving behind the agent rather than ahead of it.
Alternatives to Cortex and MotherDuck
Other Analytics 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 Cortex or MotherDuck.
Calibre
Calibre MCP lets your coding agent read RUM and Lighthouse data, then fix the slow code
Dovetail
Dovetail opens its docs to Claude and ChatGPT as co-authors.
Apache SkyWalking
SkyWalking 11.1 builds service maps from OpenTelemetry traces, no SkyWalking agent required.
OpenReplay
OpenReplay's feed is Helm chart bumps behind its asset-cacher deny list.
Tinybird
Tinybird shrinks its Local image by a third after a run of observability updates.
See all Cortex alternatives → · See all MotherDuck alternatives →
Recent activity from Cortex and MotherDuck
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6d agoMotherDuckRedesigned UI puts Agent Chat on the home screen ⚡
- 17d agoMotherDuckRow-level security, Dive write-back and Flight run grants
- 24d agoMotherDuckImage inputs for prompt_jev() and Agent Chat that builds Dives
- 1mo agoMotherDuckAdmin API user listing, connection timeouts, prompt_jev() in EU
- 1mo agoCortex1.22 candidate 4 fixes tenant-deletion cleanup on GCS and Azure
- 1mo agoMotherDuckAI functions 50-60% cheaper; prompt_jev() billing begins
- 1mo agoCortex1.22 candidate 3 fixes the ingestion-delay histogram
- 1mo agoMotherDuckCross-region DuckLake paths and leaner LIMIT queries
- 1mo agoCortex1.22 candidate 2 adds three bug fixes
- 1mo agoCortex1.22 candidate: sharded Parquet, query eviction, OCI storage
- 5mo agoCortex1.21.1 candidate hardens gossip, ingestion and status pages
- 6mo agoCortex1.21.0-rc.1 fixes memberlist, tenant federation and a memory leak
Frequently asked questions
What is the difference between Cortex and MotherDuck?
They serve adjacent needs but don't currently overlap on shipped themes. MotherDuck is currently shipping more aggressively (velocity 6.3 vs 2.5), 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 Cortex better than MotherDuck?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. MotherDuck is currently shipping more aggressively (velocity 6.3 vs 2.5), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.
What are the best alternatives to Cortex?
Top Cortex alternatives in Analytics are ranked by recent ship velocity. Browse the "Cortex alternatives" section above for the current picks, or visit /alternatives/cortex-metrics for the full list with editorial commentary on each.
What are the best alternatives to MotherDuck?
Top MotherDuck alternatives in Analytics are ranked by recent ship velocity. Browse the "MotherDuck alternatives" section above for the current picks, or visit /alternatives/motherduck for the full list with editorial commentary on each.