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AssemblyAI costs Free to $0.21 per hour as of May 2026. Pricing depends on your chosen tier, contract length, and negotiated discounts.

Use the interactive pricing calculator to estimate your exact cost based on team size and requirements.

  • Free tier: No free tier available
Last verified: | Sources: 3 pricing pages and reviews
+2380% above list price
Know Before You Buy — Try AssemblyAI Free

AssemblyAI true cost runs 2380% above the listed $0-$0.21/hour price as of May 2026. For a 25-person team, expect ~$781 in year-one costs vs the $31.5 base license. Key hidden costs: audio intelligence add-ons stack significantly: adding speaker diarization ($0.02/hr), entity detection ($0.08/hr), topic detection ($0.15/hr), and summarization ($0.03/hr) increases base universal cost from $0.15/hr to $0.43/hr (187% increase) -- most real-world use cases require multiple features, real-time streaming charges apply to connection time, not audio duration: a 30-minute streaming session billed at $0.15/hr costs $0.075 even if only 10 minutes of audio is transcribed -- idle connection time counts toward usage, llm gateway token costs are separate: using assemblyai's llm gateway for post-processing adds $3-$15 per million output tokens (claude 4.5 sonnet: $3 input/$15 output) on top of transcription costs -- a 10,000-word summary costs ~$0.20-$0.30 additional. Verified from 3 sources by CostBench.

Hidden Costs Breakdown

1

Audio intelligence add-ons stack significantly: Adding speaker diarization ($0.02/hr), entity detection ($0.08/hr), topic detection ($0.15/hr), and summarization ($0.03/hr) increases base Universal cost from $0.15/hr to $0.43/hr (187% increase) -- most real-world use cases require multiple features

2

Real-time streaming charges apply to connection time, not audio duration: A 30-minute streaming session billed at $0.15/hr costs $0.075 even if only 10 minutes of audio is transcribed -- idle connection time counts toward usage

3

LLM Gateway token costs are separate: Using AssemblyAI's LLM Gateway for post-processing adds $3-$15 per million output tokens (Claude 4.5 Sonnet: $3 input/$15 output) on top of transcription costs -- a 10,000-word summary costs ~$0.20-$0.30 additional

4

Enterprise minimum commitments: While exact pricing is negotiated, Enterprise plans typically require $12,000-$24,000 annual commitments with prepayment -- unused credits may expire annually depending on contract terms

5

API integration and infrastructure costs: Budget $500-$2,000 for initial integration including webhook setup, audio preprocessing, storage (S3/GCS), and error handling -- ongoing infrastructure costs $50-$200/month for audio storage and processing

6

No volume discounts on free tier: The $50 free credit processes approximately 185 hours of Universal transcription, but expires once used -- there is no free tier refresh, so after exhausting credits you immediately pay full Pay-As-You-Go rates

Example: True Cost for 25 Users

License (25 × $0.105 × 12) $31.5/yr
Implementation (one-time) +$15,000–$50,000
Premium Support (20%) +$6/yr
Training (25 × $500) +$12,500
Admin (part-time) +$15,000–$25,000/yr
Estimated Year 1 Total ~$781
That's roughly 24.8× the advertised license price.
Now You Know the Real Cost — Try AssemblyAI Free