Comet vs Sembly Pricing (2026)

How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.

Comet pricing Sembly pricing
Starts at $19/mo $10/mo
Number of plans 4 4
Free plan
Free trial
Pricing model hybrid per-seat

Price is one row. To weigh the features too, use our feature comparison template →

Open Source

$0/mo
  • Full AI observability & agent testing feature set
  • True OSS: same codebase as the hosted versions
  • Agent tracing & analysis
  • Test Suites & assertions
  • Agent Playground

Free Cloud

$0/mo
  • Up to 10 team members
  • 25k spans per month
  • 60-day data retention
  • Agent tracing & analysis
  • Test Suites & assertions
  • Agent Playground
  • Ollie coding harness trial

Pro Cloud

Popular
$19/mo
  • Up to 50 team members
  • 100k spans per month
  • 60-day data retention
  • Customizable monthly span limits
  • Customizable data retention periods

Enterprise

Custom
  • Unlimited team members
  • Custom usage plans
  • Flexible deployments
  • Service accounts and view-only users
  • Single sign-on
  • Dedicated support and SLAs
  • SOC 2, ISO 27001, ISO 9001, HIPAA, and GDPR compliance

Basic

$10/mo
  • Unlimited online meetings
  • Audio & video recordings
  • Multi-lingual transcription
  • Meeting notes and summaries
  • Single-meeting AI chat
  • 2,500 Studio credits

Pro

Popular
$20/mo
  • Custom meeting notes templates
  • Risks, issues, and notable events
  • Workspace integrations and MCP
  • Multi-meeting AI chat
  • Consent tracking
  • 3,000 Studio credits

MAX

$30/mo
  • Unlimited meeting history
  • HIPAA compliance
  • Custom SSO
  • Audit log
  • HD video recording
  • 3,500 Studio credits

Enterprise

Custom
  • Custom contracts and DPAs
  • Dedicated Success Manager
  • Personalized onboarding and workshops
  • More than 500 users per workspace

Comet vs Sembly FAQ

Which one is cheaper?
Sembly is the cheaper option, starting at $10/mo vs $19/mo for Comet.
Can I use either one for free?
Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
How do they charge?
Different approach here. Comet uses hybrid pricing, while Sembly goes with per-seat. That changes the math depending on your team size and usage.
Which one is a better deal?
Depends on what you need. Comet: At $19/mo for Pro, Comet undercuts most enterprise-first MLOps and LLM observability tools that gate everything behind a sales call — this is a land-and-expand play aimed at developers and small teams who'd otherwise bounce off a 'contact us' wall. Sembly: At $10-$30 per seat, Sembly sits in the value-to-mid band of AI note-takers, undercutting premium players while still charging real money above the free tiers. It's courting small teams and cost-conscious buyers who want Otter or Fireflies-style capability without the sticker shock.

Still deciding? See the best Comet alternatives or the best Sembly alternatives, ranked with verified pricing.

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