Speechmatics vs Vapi

Comprehensive side-by-side comparison — features, pricing, performance, and more.

Data last refreshed October 2026

Speechmatics

Speech APIs powering Voice AI — multilingual speech-to-text

Freemium

82% verification coverage

Vapi

Build & deploy advanced voice AI agents

Paid

85% verification coverage

Trust & Reliability

Speechmatics

Users:1M-10M

Customers (per vendor):AI Media, Adobe, NCI +7

GDPR

SOC 2

HIPAA

Vapi

Uptime:99.937%Status page

Users:1M-10M

Customers (per vendor):Amazon Ring, Intuit, ServiceTitan +7

GDPR

SOC 2

HIPAA

Too Close to Call

Speechmatics (7.3) vs Vapi (7.3) — difference of 0.0 points

Scores are AI-estimated from publicly available data — not an independent test or a verified user rating. How we rank →

AI Comparison Summary

Speechmatics

7.3

avg score

Vapi

7.3

avg score

Both tools score very similarly overall — the best choice depends on your specific priorities.

Based on 6 dimensions

Scores are AI-estimated from publicly available data — not an independent test or a verified user rating. How we rank →

Too close to call — it's a tie

Speechmatics

Best For

Developers building voice AI agents needing sub-second, speaker-aware STT and TTS

Healthcare providers supporting ambient scribe and dictation with specialized medical models

Media and broadcast companies requiring accurate live captioning at scale

Contact centers aiming to reduce wait times and improve customer experience with speech analytics

Vapi

Best For

Builders and early teams needing fast iteration for voice agents

Scaling teams in production requiring reliability and advanced features

Sophisticated organizations deploying voice agents at enterprise scale

Developers building voice AI applications with full programmatic control

* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology

Speechmatics is best for

🎧Customer Support7.0🎵Audio & Voice6.5🔍Research6.0

Vapi is best for

🎵Audio & Voice7.5🤖Automation & Agents7.2💻Coding & Dev7.0

Filter by your use case:

Limitations

Speechmatics

Cons

SSO is a paid add-on at $280/month
Self-serve concurrent real-time sessions are limited to 50 (2 on Free plan)
Self-serve pre-recorded files per second are limited to 10
On-premise, virtual appliance, on-device, and hybrid deployments are only available on Enterprise plans
Healthcare vocabulary is not available on Melia 1, Enhanced, or Standard models
Mixed-language transcription, code-switching, language hints, and language labeling are not available on Enhanced or Standard models
Custom dictionary is not available on Melia 1 or Oak 1 models

Vapi

Cons

Raw data retention is limited to 14 days on the "No Success Package" tier
Email support without SLA on the "No Success Package" tier
Pro plan has a minimum monthly fee of $999
HIPAA compliance is an add-on for $2,000/month
Optional Providers are not Vapi subprocessors and are not covered by Vapi's DPA

Weighted Score — Adjust What Matters to You

Pick a profile or drag sliders — scores and radar update instantly on the right.

Quick profiles:

Ease of Use5

Customization5

Support5

Integration5

Compliance & Data Protection5

Performance5

Planning Quality5

Dimension Comparison

Speechmatics

7.3

/ 10

Vapi

7.3

/ 10

Dimension Breakdown

Ease of Use

How intuitive is onboarding, UI navigation, and day-to-day usage for the target audience?

Speechmatics

4.0

Vapi

4.0

Customization

Calculated

How much can users tailor workflows, settings, prompts, or outputs to their needs?

Speechmatics

7.0

Vapi

8.0▲ +1.0

Support

How strong is the documentation, customer support, community, and learning resources?

Speechmatics

8.0▲ +1.0

Vapi

7.0

Integration

Calculated

How well does it connect with other tools, APIs, and workflows?

Speechmatics

7.0

Vapi

10.0▲ +3.0

Compliance & Data Protection

Calculated

Compliance certifications and data-protection posture, counted from ten verified signals: SOC 2 Type II, GDPR compliance, HIPAA, WCAG AA/AAA, PII redaction, licensed-only training, a published sub-processor list, a downloadable DPA, not training on user data, and a documented deletion path

Speechmatics

8.0▲ +1.0

Vapi

7.0

Performance

Calculated

Latency + throughput speed

Speechmatics

10.0▲ +2.0

Vapi

8.0

Planning Quality

Calculated

Multi-step planning depth + replanning capability

Speechmatics

—

Vapi

—

Calculated = derived from structured signals (integration count, API/open-source config, compliance certs, response-time). AI = LLM-assessed from public website content. Methodology

Task Performance

Speechmatics

Task

Vapi

5.0

Voice Naturalness

8.0

Language Coverage

8.0

1.0

Speaker Cloning

6.0

8.0

Transcription Accuracy

7.0

9.0

Real Time Processing

9.0

2.0

Emotion Control

6.0

7.0

Noise Handling

8.0

7.0

Format Support

5.0

9.0

Speaker Diarization

3.0

8.0

Custom Vocabulary

8.0

* Task scores (1–10) are algorithmically generated from publicly available data.

Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy

Frequently Asked Questions

What are the main differences between Speechmatics and Vapi?

Speechmatics — "Speech APIs powering Voice AI — multilingual speech-to-text". Vapi — "Build & deploy advanced voice AI agents". The Features section on this page compares them side by side.

Who is Speechmatics best for compared with Vapi?

Speechmatics is best for Developers building voice AI agents needing sub-second, speaker-aware STT and TTS; and for Healthcare providers supporting ambient scribe and dictation with specialized medical models. Vapi is best for Builders and early teams needing fast iteration for voice agents; and for Scaling teams in production requiring reliability and advanced features.

How does the pricing of Speechmatics compare with Vapi?

Speechmatics is freemium, includes a free plan. Vapi is paid, includes a free plan, paid plans start at $29/month. Always verify current pricing with the vendor.

Does Speechmatics or Vapi have a free plan?

Speechmatics has a free plan. Vapi has a free plan. Always verify current pricing with the vendor.

Do Speechmatics and Vapi offer an API?

Speechmatics offers a public API. Vapi offers a public API.

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