Kapwing · Text to speech
Kapwing offers a remarkably fast cloud AI text-to-speech tool. Synthesizing the 452-character benchmark script took just 0.35s of server wait, producing 34.78s of expressive speech cleanly exportable as a native MP3 file.
US-West (California, AS2914)
MP3 · Output attached · Open native file ↗
Subsequent pricing and service checks are shown separately without altering historical scores.
One run does not establish all complex scenes, untested paid maxima or long-term uptime.
Plans & historical pricing
Sitewide video creation, AI tools, and collaborative workspace pricing · 2026-10-29
Basic video recording, transitions, auto-subtitling preview (up to 10 min), TTS preview (up to 1 min)；Watermarked exports, 720p resolution cap, 4-minute export length limit；Free forever；No expiration
No watermark, 4K resolution exports, unlimited projects, Brand Kit, collaborative workspace, up to 1,000 min/mo auto-subtitles；Auto-renews monthly at $24/month
Rules [1] [2]No watermark, 4K resolution exports, unlimited projects, Brand Kit, collaborative workspace, up to 1,000 min/mo auto-subtitles；Billed annually at $192/year ($16/mo equivalent, saves 33%)
Rules [3] [4]Everything in Pro, voice cloning, lip sync, add-on credit purchases, up to 4,000 min/mo subtitles；Auto-renews monthly at $64/month
Rules [1] [2]Everything in Pro, voice cloning, lip sync, add-on credit purchases, up to 4,000 min/mo subtitles；Billed annually at $600/year ($50/mo equivalent, saves ~22%)
Rules [3] [4]Dedicated account manager, priority support, SAML SSO, onboarding, and custom billing；Requires contacting sales for enterprise contract；Contract renewal；Per contract duration
6 plan / billing-period records, all listed; — means that period is not recorded.
Free tier includes 10 credits (watermarked, up to 4 min, 720p); Pro plan is $24/mo or $192/yr ($16/mo equivalent, saves 33%); Business plan is $64/mo or $600/yr ($50/mo equivalent); Enterprise tier offers custom quotas.
Cancellation, sources & verification record
Cancellation and refund terms unverified
Kapwing Official Pricing Page ↗ · 2026-10-29 Capture 1 ↗
Pricing recorded on the test date · 2026-11-02
Free plan (10 initial credits); Pro $24/mo ($192/yr, $16/mo eq); Business $64/mo ($600/yr, $50/mo eq)
Free credits + monthly/annual tiers
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- Standard MP3 audio (34.78s, 24kHz, 160kbps, watermark-free)
- Watermark
- Not recorded or not verified
- Free allowance
- 10 initial credits on registration; 452-character TTS synthesis consumed 5 credits
- Account requirements
- Google OAuth, Apple ID, Email & Password, SAML SSO
- Maximum specification record
- Standard MP3 audio (34.78s, 24kHz, 160kbps, watermark-free)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Not recorded or not verified
- Manual refinement
- Not recorded or not verified
Tested result & sample
Entered 452-character benchmark text and selected Anna voice. High-fidelity speech track was synthesized in 0.35s and directly downloaded as a 34.78s MP3 file.
- Fixture
- anchor_tts_v1
- Recorded environment
- US-West (California, AS2914)
- Network-observed server wait
- 0.35 s
- End-to-end reference
- 0.35 s
Network wait includes round trips, queuing and polling error, not pure inference time. Local timings depend on the device; repetition counts are not standardized in legacy records.
Experience, rules & trust
- Disclosure
- Not recorded or not verified
- Interaction
- Not recorded or not verified
- Entity record
- Kapwing, Inc.
- Origin
- San Francisco, United States
- Domain history record
- Domain registered in 2017
- Third-party tracking record
- Google Tag Manager · Segment · Stripe
- External information
- Founded by former Google employees; backed by Kleiner Perkins and CRV; widely adopted worldwide.
- Processing
- Cloud neural TTS synthesis and WebAssembly audio multitrack engine
- Retention statement
- Projects saved in cloud workspace with user-initiated deletion and export
A recorded statement does not verify deletion or all data-processing behavior.
Verifiable audit trail & evidence
Four SHA-256-verified stages link the benchmark fixture, same-run interface screenshots, native exported artifact and archived pricing sources.
anchor_tts_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 95.3/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_tts_v1
Honesty & reputation · 89/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 32 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 27 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 17 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 13 / 15 | Explanation unavailable | Evidence A → |
Capability · 98/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 63 / 65 | Measured anchor metrics: duration_sec=34.78 · sample_rate=24000 · channels=1 · bitrate_kbps=160 · duration_in_bounds=true · sample_rate_valid=true · quality_score=63 | Evidence A → |
| Deliverable specifications | 20 / 20 | Clean unwatermarked export (8/8); Export spec: Standard MP3 audio (34.78s, 24kHz, 160kbps, watermark-free) | Evidence A → |
| Processing speed | 15 / 15 | Network-observed server wait: 0.35s (API mode: sync_json_verified; network upload 0s / end-to-end 0.35s shown for reference only, never penalized) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Revisions & corrections
- 2026-11-02
Completed real-machine benchmark evaluation and 3-node screenshot verification under RealTest Protocol v2.3.