Resend
Resend is wiring itself into every agent runtime it can reach, and now adding the controls to stop a send.
Comparison · Infra & APIs
ElevenLabs vs Knock
A side-by-side editorial comparison of ElevenLabs and Knock — release velocity, themes, recent moves, and the top alternatives to consider.
ElevenLabs vs Knock: at a glance
| Feature | ElevenLabs | Knock |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 7.5 | 6.3 |
| Sparks · 30d | 2 | 1 |
| Top themes | voice-agents, dubbing, api-first, versioning | notifications, developer-infrastructure, rbac, workflow-automation |
| Last editorial update | 6d ago | 15h ago |
| Website | Visit → | — |
What is ElevenLabs?
ElevenLabs is turning voice agents into versioned software, with weekly API surface to prove it.
The changelog is dominated by ElevenAgents, shipped as dense weekly API digests rather than feature posts. Agents now have branches, merges, rebases and version filters, plus procedures that compile into workflows, knowledge-base crawl jobs and per-agent sentiment analysis. Alongside that, the core model lines keep advancing: Music v2, Speech Engine, and now Dubbing v2 through the API.
What is Knock?
Knock is hardening for enterprise buyers while its agent takes over the analysis work.
Knock ships weekly, in small, legible increments across three lanes: account governance (custom roles, passkeys), workflow primitives (wait-for-event, branch rebasing), and data ingress (Amplitude, Clay). The newest entry adds granular custom roles, which closes the last obvious gap in account-level access control. Alongside that, the in-product agent gained analytics, letting teams interrogate delivery performance without building reports.
ElevenLabs vs Knock: editorial side-by-side
ElevenLabs
7.5INFRA · APIS
ElevenLabs is turning voice agents into versioned software, with weekly API surface to prove it.
◆ Current state
The changelog is dominated by ElevenAgents, shipped as dense weekly API digests rather than feature posts. Agents now have branches, merges, rebases and version filters, plus procedures that compile into workflows, knowledge-base crawl jobs and per-agent sentiment analysis. Alongside that, the core model lines keep advancing: Music v2, Speech Engine, and now Dubbing v2 through the API.
◆ Where it's heading
Two arcs run in parallel. The agent platform is acquiring the mechanics of source control, which points at teams operating many agent versions in production rather than one hand-tuned assistant. The model lines are being rebuilt one at a time and exposed API-first, with older v1 models given explicit removal dates. Dubbing is the newest line to make that jump.
◆ Prediction
The v1 deprecation pattern suggests dubbing_v1 gets a removal date next, and the branch tooling looks close to gaining an approval or promotion step given merge previews already exist.
Knock
6.3INFRA · APIS
Knock is hardening for enterprise buyers while its agent takes over the analysis work.
◆ Current state
Knock ships weekly, in small, legible increments across three lanes: account governance (custom roles, passkeys), workflow primitives (wait-for-event, branch rebasing), and data ingress (Amplitude, Clay). The newest entry adds granular custom roles, which closes the last obvious gap in account-level access control. Alongside that, the in-product agent gained analytics, letting teams interrogate delivery performance without building reports.
◆ Where it's heading
Two arcs run in parallel. The infrastructure lane is buying enterprise credibility — roles, passkeys, audit-grade permissions — the checklist items that decide procurement rather than daily use. The data lane keeps widening what can trigger a workflow: product analytics from Amplitude, enriched rows from Clay, internal Slack channels as a destination. Together they push Knock from a notification API toward the messaging control plane, with the agent as the layer that explains what the plane did.
◆ Prediction
Expect the roles work to continue into audit logs or scoped API keys, since granular permissions without an activity trail is an incomplete enterprise story. More data sources are likely on the same cadence, with the CRM and warehouse categories the obvious remaining gaps.
Alternatives to ElevenLabs and Knock
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 ElevenLabs or Knock.
DNSControl
DNSControl v5 is feature-frozen with a ship date, and rc9 is pure provider cleanup
Casdoor
Casdoor is spending its release cadence moving auth checks from the client to the server
ESPHome
ESPHome ships on a calendar, and the August beta train is now five builds deep
Strimzi
Strimzi's 1.2.0 candidate closes with a logging fix and nothing else
Prowler
Prowler's assistant decides what to do with findings; the patches keep the scanner honest
See all ElevenLabs alternatives → · See all Knock alternatives →
Recent activity from ElevenLabs and Knock
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoKnockCustom roles and permissions
- 6d agoKnockPower internal Slack alerts
- 7d agoKnockCategory + tag management
- 9d agoElevenLabsDubbing v2 API ⚡
- 13d agoKnockAmplitude data source
- 16d agoElevenLabsPer-test tool mocks, translated workflow messages, version filters
- 20d agoKnockAnalytics in the Knock agent ⚡
- 21d agoKnockWait for event function
- 23d agoElevenLabsProcedure APIs, knowledge-base crawl jobs, bulk document management ⚡
- 1mo agoElevenLabsPer-agent sentiment analysis, nested transfers, backchannel detection
- 1mo agoElevenLabsBranch merge and rebase previews, unified auth connection status
- 1mo agoElevenLabsBranch rebase, conversation product and termination filters
Frequently asked questions
What is the difference between ElevenLabs and Knock?
They serve adjacent needs but don't currently overlap on shipped themes. ElevenLabs is currently shipping more aggressively (velocity 7.5 vs 6.3), with 2 editorial sparks in the last 30 days against 1. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is ElevenLabs better than Knock?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. ElevenLabs is currently shipping more aggressively (velocity 7.5 vs 6.3), with 2 editorial sparks in the last 30 days against 1. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to ElevenLabs?
Top ElevenLabs alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "ElevenLabs alternatives" section above for the current picks, or visit /alternatives/elevenlabs for the full list with editorial commentary on each.
What are the best alternatives to Knock?
Top Knock alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Knock alternatives" section above for the current picks, or visit /alternatives/knock for the full list with editorial commentary on each.