Comet vs Gemini API 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 Gemini API pricing
Starts at $19/mo Custom
Number of plans 4 2
Free plan
Free trial —
Pricing model hybrid usage-based

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

Comet pricing

Official page

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

Gemini API pricing

Official page

Free

$0/mo
  • Limited access to certain models
  • Free input & output tokens
  • Google AI Studio access
  • Content used to improve our products

Paid

Popular
Custom
  • Higher rate limits for production deployments
  • Access to Context caching
  • Batch API (50% cost reduction)
  • Access to Google's most advanced models
  • Content not used to improve our products

Comet vs Gemini API FAQ

Which one is cheaper?
One or both use custom pricing, so it depends on your specific needs.
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 Gemini API goes with usage-based. 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.

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

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