Which one is cheaper?

One or both use custom pricing, so it depends on your specific needs.

Can I use either one for free?

AssemblyAI has a free plan. Lambda doesn't — you'll need to pay from day one.

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. Lambda: Lambda plays in the middle-to-premium range of GPU cloud — cheaper and more transparent than hyperscalers like AWS/GCP for raw compute, but not chasing rock-bottom pricing like some bare-metal GPU brokers. They're going after ML teams and researchers who want hyperscaler-grade hardware without the enterprise cloud markup or lock-in.

AssemblyAI vs Lambda 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 pricing	Lambda pricing
Starts at	Custom	Custom
Number of plans	2	1
Free plan		—
Free trial		—
Pricing model	usage-based	usage-based

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

AssemblyAI pricing

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

Lambda pricing

Official page

On-Demand GPU Cloud

Custom

Launch in minutes
Multi-GPU instances
Use UI, API, or CLI
Turnkey performance
Real-time visibility
Easy storage
Built-in observability
No egress fees

AssemblyAI vs Lambda 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?: AssemblyAI has a free plan. Lambda doesn't — you'll need to pay from day one.
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. Lambda: Lambda plays in the middle-to-premium range of GPU cloud — cheaper and more transparent than hyperscalers like AWS/GCP for raw compute, but not chasing rock-bottom pricing like some bare-metal GPU brokers. They're going after ML teams and researchers who want hyperscaler-grade hardware without the enterprise cloud markup or lock-in.

Still deciding? See the best AssemblyAI alternatives or the best Lambda alternatives, ranked with verified pricing.

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