Comet vs Weaviate Pricing (2026)

Which one is cheaper?

Comet starts lower at $19/mo, compared to $45/mo for Weaviate.

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?

Both use a usage-based model, so the comparison is straightforward — it comes down to features and limits at each price point.

Which one is a better deal?

Depends on what you need. Comet: At $19/mo entry, they're positioning as the accessible alternative to heavier MLOps platforms — clearly going after teams that find tools like Weights & Biases or Arize too expensive or too complex for pure LLM tracing use cases. The academic free Pro tier signals they're also playing a long game on developer mindshare. Weaviate: Sitting in the mid-to-premium range for vector databases, they're not trying to be the cheapest option — Pinecone and Qdrant Cloud are in the same conversation. The usage-based model lets them look affordable at entry while capturing serious revenue from high-volume AI workloads where dimension counts explode.

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