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Comparison · Infra & APIs
Ably vs Cursor
A side-by-side editorial comparison of Ably and Cursor — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Cursor: at a glance
| Feature | Ably | Cursor |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 5.0 | 7.5 |
| Sparks · 30d | 0 | 2 |
| Top themes | realtime messaging, ai transport, sdk, liveobjects | agent-sdk, cloud-agents, agentic-platform, evals |
| Last editorial update | 3d ago | 2d ago |
| Website | — | — |
What is Ably?
Ably clears its iOS SDK of a 'tracking' privacy label while pitching realtime to AI agents.
Ably is a realtime messaging platform that is repositioning its pub/sub infrastructure as transport for AI agent output, alongside LiveObjects shared state. Recent releases are SDK hardening: faster liveness detection, LiveObjects reaching stable across platforms, simpler channel rules and permissions, and now a corrected iOS privacy manifest.
What is Cursor?
Cursor's Agent SDK turns custom agents into code projects you can test, then deploy anywhere.
Cursor has grown from an editor into a delivery platform: Projects coordinates cloud agents, Origin hosts repos with a 20+ app marketplace, Rollouts watches deploys, and the Environments API scripts agent sandboxes. On October 20 the Agent SDK went GA. An agent is now a folder with a prompt, typed tools, skills, MCP connections and channels, tested with evals and deployed either to Cursor or to the team's own infrastructure.
Ably vs Cursor: editorial side-by-side
Ably
5.0INFRA · APIS
Ably clears its iOS SDK of a 'tracking' privacy label while pitching realtime to AI agents.
◆ Current state
Ably is a realtime messaging platform that is repositioning its pub/sub infrastructure as transport for AI agent output, alongside LiveObjects shared state. Recent releases are SDK hardening: faster liveness detection, LiveObjects reaching stable across platforms, simpler channel rules and permissions, and now a corrected iOS privacy manifest.
◆ Where it's heading
The product is running two tracks: AI Transport for streaming and steering agent output, and steady maturation of the core SDKs and the config-as-code surface. The core work removes friction for app developers, such as App Store privacy labels, Terraform and permission rules, so the platform is easier to adopt.
◆ Prediction
Expect AI Transport to move toward a 1.0 SDK, and LiveObjects stable releases for the remaining platform SDKs.
Cursor
7.5INFRA · APIS
Cursor's Agent SDK turns custom agents into code projects you can test, then deploy anywhere.
◆ Current state
Cursor has grown from an editor into a delivery platform: Projects coordinates cloud agents, Origin hosts repos with a 20+ app marketplace, Rollouts watches deploys, and the Environments API scripts agent sandboxes. On October 20 the Agent SDK went GA. An agent is now a folder with a prompt, typed tools, skills, MCP connections and channels, tested with evals and deployed either to Cursor or to the team's own infrastructure.
◆ Where it's heading
The last month has been about opening Cursor's agent stack to outside code: partner apps write into Origin, the Environments API exposes sandboxes, and the Agent SDK lets teams build their own bots on the same runtime. Agents that wake on PR, CI, Slack, webhook and cron events push Cursor past the IDE into always-on team automation. Cursor is selling the agent runtime itself, not just its own agents.
◆ Prediction
Expect more starter templates and SDK-built agents to appear in the app marketplace, and tighter links between SDK agents and Projects or Rollouts. Whether self-hosted deploys get the same dashboard tooling as Cursor-hosted ones is not yet clear from the entries.
Alternatives to Ably and Cursor
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 Ably or Cursor.
NetBird
NetBird's second v0.82 candidate keeps the MySQL removal and deprecates Rosenpass.
GitHub
At Universe, GitHub folds Copilot into Enterprise seats and lets Copilot Fusion pick the model.
incident.io
incident.io's agent now runs your team's own tools, with a human approval before any change.
Apache Airflow
Airflow 3.4 reaches its first release candidate, a week after the 10-20 provider wave.
Redocly
Redocly's reunite.agent gets per-duty cron schedules, rules and source repos.
Recent activity from Ably and Cursor
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 7d agoAblyCocoa SDK v1.4.1: Privacy manifest changes
- 9d agoCursorCursor Agent SDK goes GA: agents as code, deployable anywhere ⚡
- 13d agoCursor# Canvases from cloud agents
- 16d agoCursorOrigin App Marketplace opens with 20+ apps and public submissions ⚡
- 19d agoAblySigned unbatched webhooks, simpler filtered-subscribe permissions
- 29d agoAblyFlexible match expression in channel rules
- 1mo agoAblyAI Transport JS SDK v0.9.0: A simplified streaming layer
- 1mo agoAblyJS PubSub SDK v2.29.0 Release
- 1mo agoCursor# Rollouts ⚡
- 1mo agoAblyAbly Dotnet SDK v1.2.19 Release
- 1mo agoCursor# Powered by Cloud Agents ⚡
- 1mo agoCursorSelf-hosted pools, external sandboxes, and Linux/Mac computer use ⚡
Frequently asked questions
What is the difference between Ably and Cursor?
They serve adjacent needs but don't currently overlap on shipped themes. Cursor is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 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 Ably better than Cursor?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Cursor is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 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 Ably?
Top Ably alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Ably alternatives" section above for the current picks, or visit /alternatives/ably for the full list with editorial commentary on each.
What are the best alternatives to Cursor?
Top Cursor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Cursor alternatives" section above for the current picks, or visit /alternatives/cursor for the full list with editorial commentary on each.