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Comparison · Infra & APIs

Ably vs Terragrunt

A side-by-side editorial comparison of Ably and Terragrunt — release velocity, themes, recent moves, and the top alternatives to consider.

Ably vs Terragrunt: at a glance

FeatureAblyTerragrunt
SectorInfra & APIsInfra & APIs
Velocity score7.50.0
Sparks · 30d20
Top themesliveobjects, ai-transport-sdk, realtime-state-sync, durable-agentsterraform, infrastructure-as-code, experiments, release-candidate
Last editorial update2d ago1mo ago
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What is Ably?

Ably ships LiveObjects as production-ready and expands its AI Transport SDK to cover Temporal durable workflows.

Ably is shipping simultaneously across infrastructure SDKs and AI-specific capabilities. LiveObjects — a real-time state sync layer for nested maps and counters — graduated from experimental to production-stable in the Java and Cocoa SDKs this month, with path-based access and resilient subscriptions that survive underlying object replacement. The AI Transport SDK gained Temporal durable-workflow support and OpenAI Responses API streaming. On the infrastructure side, the .NET SDK reduces reconnect latency from 120s to ~25s and the Terraform provider got a major maturity pass with moderation rules and a config importer.

Read the full Ably trajectory →

What is Terragrunt?

Terragrunt graduated six experiments at once and has spent three candidates stabilising them

Terragrunt is running the v1.1.0 release-candidate cycle, now at rc3. The first candidate completed six experiments simultaneously — stack-dependencies, a content-addressable store, a catalog redesign, mark-many-as-read, opt-out-auth and DAG queue display. The two candidates since have added only bug fixes for those features plus improvements to how releases are published and verified.

Read the full Terragrunt trajectory →

Ably vs Terragrunt: editorial side-by-side

A
Ably
INFRA · APIS
7.5

Ably ships LiveObjects as production-ready and expands its AI Transport SDK to cover Temporal durable workflows.

◆ Current state

Ably is shipping simultaneously across infrastructure SDKs and AI-specific capabilities. LiveObjects — a real-time state sync layer for nested maps and counters — graduated from experimental to production-stable in the Java and Cocoa SDKs this month, with path-based access and resilient subscriptions that survive underlying object replacement. The AI Transport SDK gained Temporal durable-workflow support and OpenAI Responses API streaming. On the infrastructure side, the .NET SDK reduces reconnect latency from 120s to ~25s and the Terraform provider got a major maturity pass with moderation rules and a config importer.

◆ Where it's heading

The direction is Ably as AI agent infrastructure. LiveObjects' own documentation positions it explicitly for 'AI agents, live configurations, and collaborative experiences.' The AI Transport SDK is a purpose-built layer for agentic workflows — durable sessions, multi-turn conversations, tool execution — layered on Ably's realtime primitives. This is a deliberate expansion from realtime messaging platform into the transport layer that agents run on.

◆ Prediction

The AI Transport SDK will add more model provider codecs — the OpenAI Responses integration suggests Anthropic or Gemini support is next. LiveObjects needs to reach stable across remaining SDKs (Python, .NET) before the feature can be adopted uniformly.

T
Terragrunt
INFRA · APIS
0.0

Terragrunt graduated six experiments at once and has spent three candidates stabilising them

◆ Current state

Terragrunt is running the v1.1.0 release-candidate cycle, now at rc3. The first candidate completed six experiments simultaneously — stack-dependencies, a content-addressable store, a catalog redesign, mark-many-as-read, opt-out-auth and DAG queue display. The two candidates since have added only bug fixes for those features plus improvements to how releases are published and verified.

◆ Where it's heading

The experiment-graduation model is doing what it is supposed to: features developed behind flags land together in one minor, and the candidate cycle is purely stabilisation. The release-publishing and verification work appearing in rc2 suggests supply-chain provenance is being treated as release-blocking rather than as a follow-up.

◆ Prediction

With three candidates carrying identical feature lists, v1.1.0 final is the likely next release, followed by a fresh batch of experiments opening for v1.2.

Alternatives to Ably and Terragrunt

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 Terragrunt.

See all Ably alternatives → · See all Terragrunt alternatives →

Recent activity from Ably and Terragrunt

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 3d agoAbly.NET SDK cuts reconnection wait from 120s to ~25s, corrects connection state edge cases
  2. 9d agoAblyJava SDK v1.8.1: LiveObjects Stable Release
  3. 12d agoAblyTerraform Provider adds moderation rules, data sources, and config importer tool
  4. 17d agoAblyCocoa SDK v1.4.0: LiveObjects stable release
  5. 27d agoAblyAbly-js v2.28.0: end to end encryption for annotation data payloads
  6. 27d agoAblyAI Transport JS SDK v0.8.0: Temporal plugin and Vercel AI SDK v7 support
  7. 2mo agoTerragruntv1.1.0-rc3
  8. 3mo agoTerragruntv1.1.0-rc2
  9. 3mo agoTerragruntv1.1.0-rc1

Frequently asked questions

What is the difference between Ably and Terragrunt?

They serve adjacent needs but don't currently overlap on shipped themes. Ably is currently shipping more aggressively (velocity 7.5 vs 0.0), 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 Terragrunt?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Ably is currently shipping more aggressively (velocity 7.5 vs 0.0), 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 Terragrunt?

Top Terragrunt alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Terragrunt alternatives" section above for the current picks, or visit /alternatives/terragrunt for the full list with editorial commentary on each.