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.

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. AssemblyAI: They're positioning as the developer-friendly, API-first alternative to Deepgram and Rev AI — competitive on price at scale but differentiated by the breadth of AI features (LLM Gateway, multichannel, etc.). The AWS Marketplace listing signals they're actively chasing enterprise procurement budgets. Weaviate: Sitting in the middle of the vector DB pack — not chasing the rock-bottom pricing of open-source-first rivals, but not positioned as the enterprise-only premium play either. The generous always-free tier is clearly aimed at winning developer mindshare before Pinecone or Qdrant does.

AssemblyAI vs Weaviate Pricing (2026)

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

	AssemblyAI	Weaviate
Starts at	Custom	$45/mo
Number of plans	2	3
Free plan
Free trial		—
Pricing model	usage-based	usage-based

AssemblyAI

Official page

Pay as you go

$0/mo

Universal-3.5 Pro ($0.21/hr)
Universal-2 ($0.15/hr)
Universal-3.5 Pro Realtime ($0.45/hr)
Universal-Streaming ($0.15/hr)
Universal-Streaming Multilingual ($0.15/hr)
Sync API ($0.45/hr)
Voice Agent API ($4.50/hr)
Speaker Diarization ($0.02/hr pre-recorded, $0.12/hr realtime)
Medical Mode ($0.15/hr)
Keyterms Prompting
Prompting ($0.05/hr)
Speaker Identification ($0.02/hr)
Translation ($0.06/hr)
Custom Formatting ($0.03/hr)
Entity Detection ($0.08/hr)
Sentiment Analysis ($0.02/hr)
Auto Chapters ($0.08/hr)
Key Phrases ($0.01/hr)
Topic Detection ($0.15/hr)
Summarization ($0.03/hr)
Profanity Filtering ($0.01/hr)
PII Audio Redaction ($0.05/hr)
PII Text Redaction ($0.08/hr)
Content Moderation ($0.15/hr)
LLM Gateway
No minimum commitments
No credit card required to start

Custom

Custom rate limits
Enhanced concurrency
Enterprise-grade flexibility
Volume-based pricing
Custom starting concurrency limits

Weaviate

Official page

Free

$0/mo

A fully managed AI Database to explore Weaviate features

Flex

Popular

$45/mo

Zero-commitment entry point to experiment and ship quickly

Premium

$400/mo

For teams scaling AI in production who need predictable pricing

AssemblyAI vs Weaviate 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?: 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. AssemblyAI: They're positioning as the developer-friendly, API-first alternative to Deepgram and Rev AI — competitive on price at scale but differentiated by the breadth of AI features (LLM Gateway, multichannel, etc.). The AWS Marketplace listing signals they're actively chasing enterprise procurement budgets. Weaviate: Sitting in the middle of the vector DB pack — not chasing the rock-bottom pricing of open-source-first rivals, but not positioned as the enterprise-only premium play either. The generous always-free tier is clearly aimed at winning developer mindshare before Pinecone or Qdrant does.

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