Comet

Comet belongs in the database because the official site now positions it as a broader AI developer platform rather than a narrow experiment tracker. The pricing and product surfaces cover both Opik and Comet's wider MLOps-oriented capabilities, which makes it relevant for teams that need tracing, evaluation, experiments, prompt work, collaboration, and production monitoring in one commercial ecosystem. That broader platform framing matters because many teams evaluating AI infrastructure need more than a single tracing tool or notebook integration.

It also deserves inclusion because the public pricing is useful enough to compare seriously. The current official pricing page shows an open-source option at $0, a free cloud tier at $0 with usage limits, Pro Cloud at $19 per month, and Enterprise as custom pricing. That makes Comet materially easier to evaluate than many AI observability and platform vendors that hide all economics behind demos and sales forms.