Speech-to-Text API · decision tool

What AssemblyAI really costs at your usage

AssemblyAI priced at YOUR usage from verified pricing pages — no free tier — paid from day one. See the free-tier ceiling, the per-unit overage, and exactly when it starts costing real money.

Prices verified 2026-07-17 against official pricing pages · fit weights are our estimates (see methodology) · share the URL to share your configuration

As of Jul 2026, with 1,000 hours of audio transcribed/month, a $50 budget for this slot, AssemblyAI ranks first for these inputs at 34% fit and a StackSays-estimated $150.00/month. Fit weights are our estimates; prices trace to official pages. Change any input below and the verdict recomputes.

Your situation

The verdict updates as you move these.

Audio transcribed / month (hours)100 hours ≈ 200 half-hour calls; streaming vendors may also bill connection timeBudget for this slot ($/mo)what you'd accept paying for the speech-to-text API layerTeam size1 = solo; bundled platforms save glue time for small teams

Clear pick for your inputs

AssemblyAIfit 34% · est $150.00/mo

Per-hour STT with a deep menu of paid intelligence add-ons

AssemblyAIfit 34%

$150.00/mo

Comparing 1 tools head-to-head. Open the full field (6 options) →

The decision, in plain words

For a solo builder at 1,000 hours of audio transcribed/month and a $50.00/mo budget for the speech-to-text API slot, AssemblyAI leads at 34% fit and $150.00/mo. The two rules doing the work: batteries included (Bundles realtime streaming, speaker diarization — fewer services to glue at team size 1); ecosystem maturity (established — our estimate from ecosystem age, docs and hiring pool).

Honest weak spot of the pick: ~$150/mo is 300% of your $50/mo budget — over it.

Generated from the calculation above — every number traces to the sourced data; nothing here is written by an AI making things up.

Why AssemblyAI scores 34%

Budget fit (weight 30, our estimate) — ~$150/mo is 300% of your $50/mo budget — over it-30

Batteries included (weight 12, our estimate) — Bundles realtime streaming, speaker diarization — fewer services to glue at team size 1+8

Exit cost (weight 4, our estimate) — Proprietary model — accuracy characteristics don't transfer to a replacement-0.8

Ecosystem maturity (weight 8, our estimate) — established — our estimate from ecosystem age, docs and hiring pool+8

Free-tier runway (weight 10, our estimate) — No free tier — paying from day one-6

Total (lines sum exactly)-20.8

Possible range −64…+64 (sum of active rule weights) · fit % = (total + max) / (2 × max)(-20.8 + 64) / 128 = 34%

How the $150.00/mo estimate is calculated

audio transcribed overage — 1000hours over 0hours included × $0.15/hours$150.00

Note — $0.15/hour async or streaming (Universal-2); add-ons stack per hour: diarization +$0.02, PII redaction +$0.08; $50 one-time signup credit$0

Monthly total (lines sum exactly)$150.00

What could change this verdict

No single input change within the tested range changes the winner.

Cost risk

Estimated now (StackSays estimate, not your final bill)$150.00/mo · Pay as you go (Universal-2)

Free-tier statusNo free tier — paid from the first unit

Official prices verified 2026-07-17; calculation is deterministic code over those prices.

At a glance

Tool	Free tier	Paid entry	Verified
AssemblyAI	No free tier	Pay-as-you-go — $0.15/hour async or streaming (Universal-2); add-ons stack per hour: diarization +$0.02, PII redaction +$0.08; $50 one-time signup credit	2026-07-17

Where did you land?anonymous, one click

Data sources

Tool	Source	Verified
AssemblyAI	AssemblyAI pricing	2026-07-17

A monitor re-checks these pages for changes; when a vendor moves a price, the date updates and every verdict recomputes.

Keep deciding