AssemblyAI vs Whisper (OpenAI)
AI Transcription APIs pricing comparison · 2026
AssemblyAI pricing ranges from $0–$0.21/hour, while Whisper (OpenAI) ranges from $0.003–$0.006/minute. Whisper (OpenAI) is typically 94% more affordable, though your actual cost depends on tier and team size.
AssemblyAI
AssemblyAI is a developer-focused speech-to-text and audio intelligence API platform that
verified 19d ago
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Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Usage-based
$0.21 per hour
see vendor pricing for volume tiers
Usage-based
$0.003 per minute
see vendor pricing for volume tiers
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
No Vendr data
—
Not in Vendr's deal flow
Median annual
$169/yr
Vendr · n=8 · limited data
REF · 01
Sources & confidence
Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.
Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources
8 sourced facts
6 hidden-cost · 1 contract · 1 review platform
Last verified
2w ago
Confidence
High confidence
Sources
15 sourced facts
10 hidden-cost · 3 contract · Vendr median · 1 review platform
Last verified
1mo ago
Confidence
High confidence
REF · 02
Plans at a glance
Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.
Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 04
Contract terms
The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.
AssemblyAI
Whisper
Auto-renewal
Yes
Yes
Cancellation
Either party can opt out of automatic renewal by providing written notice 30 days prior to the end of the then-current term; termination for convenience by the customer is effective 30 days after AssemblyAI receives notice.
—
Commitment
No upfront commitments for standard pay-as-you-go services; enterprise contracts may include minimum commitments, and committed volume plans offer discounts.
—
Price escalation
—
No published schedule; users report mid-subscription billing changes and credits consumed without explanation
Can downgrade
—
—
REF · 05
What users say
Aggregated, with sample sizes. We use whichever review platform has data.
User reviews
TrustRadius · Trustpilot · G2
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
License cost is computed from publicly listed plans (real math, list price × seats).
Median annual cost is from Vendr's deal flow when available — see source badges.
Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
VS
AssemblyAI and Whisper (OpenAI) both operate in the ai transcription apis category. This page compares their published pricing.
Plan-by-Plan Pricing
| Plan | AssemblyAI | Whisper (OpenAI) |
|---|---|---|
| Free Tier | Free /hour | Free /minute |
| Pay-As-You-Go | Custom | Free /minute |
| Enterprise | Custom | Free |
Cost at Scale
Total cost of ownership — licenses, implementation, and hidden costs included.
AssemblyAI
3 scenarios$10/month ($120/year)
Podcast Transcription Startup (50 hours/month)
$7.50 for transcription (50 hrs × $0.15/hr), $1.00 for speaker diarization (50 hrs × $0.02/hr), $1.50 for summarization (50 hrs × $0.03/hr). Total per-hour cost: $0.20/hr.
$210/month ($2,520/year)
Customer Call Analytics Platform (500 hours/month)
$75 for transcription (500 hrs × $0.15/hr), $10 for speaker diarization, $40 for entity detection, $10 for sentiment analysis, $75 for topic detection. Total per-hour cost: $0.42/hr. Enterprise pricing with 30-50% volume discount would reduce this to ~$1,500-$1,800/year.
$1,250
Enterprise Meeting Intelligence (5,000 hours/month)
$1,750/month ($15,000-$21,000/year estimate) -- Enterprise volume discounts of 40-50% applied to list pricing (~$0.25-$0.35/hr vs $0.42/hr list). Includes dedicated support, custom SLA, and prepaid annual commitment. Typical Enterprise contracts start at $12,000-$24,000 minimum.
Whisper (OpenAI)
3 scenarios$36/month ($432/year)
Startup Podcast Transcription (100 hours/month)
6,000 minutes at $0.006/min. With GPT-4o Mini Transcribe at $0.003/min, cost drops to $18/month ($216/year). No add-on fees for diarization. First month partially offset by $5 free credit.
$180/month ($2,160/year)
SaaS Meeting Recorder (500 hours/month)
30,000 minutes at $0.006/min with diarization included. Using GPT-4o Mini Transcribe reduces to $90/month ($1,080/year). At this volume, self-hosting open-source Whisper on GPU infrastructure ($276/month fixed) becomes cost-comparable and may be cheaper with dedicated hardware.
$1,800/month ($21,600/year)
Enterprise Call Center (5,000 hours/month)
300,000 minutes at $0.006/min. At this volume, self-hosting Whisper on dedicated GPU clusters ($500-$800/month) offers 55-70% savings but requires DevOps investment. Enterprise API pricing with volume discounts may be available through OpenAI sales.
Contract Terms
| Term | AssemblyAI | Whisper (OpenAI) |
|---|---|---|
| Auto-renewal | Yes | Yes |
| Cancellation | Either party can opt out of automatic renewal by providing written notice 30 days prior to the end of the then-current term; termination for convenience by the customer is effective 30 days after AssemblyAI receives notice. | — |
| Minimum commitment | No upfront commitments for standard pay-as-you-go services; enterprise contracts may include minimum commitments, and committed volume plans offer discounts. | — |
| Price escalation | — | No published schedule; users report mid-subscription billing changes and credits consumed without explanation |