Compare Lab
PolyAI vs Speechify
PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Speechify is positioned as a developer TTS API under SpeechifyAI, distinct from the consumer reading subscription.
PolyAI is positioned as enterprise dialog-agent platform with a builder, developer tooling and system integrations. Speechify is positioned as a developer TTS API under SpeechifyAI, distinct from the consumer reading subscription. Start by deciding who owns the missing layers, then inspect the documented differences below.
Enterprise Platforms and Voice Engines are different product categories. An underlying engine or framework is not a complete substitute for a deployed agent workflow.
5 jointly documented catalog fields. This measures evidence coverage, not equivalent quality or an overall winner.
Test opening hours, booking conflicts and an unanswered transfer.
Start where the records differ.
Values and evidence states are compared together. Shared facts follow the differences; Unknown never means No.
| Decision point | PolyAI | Speechify |
|---|---|---|
| Billing modelDifferent records | per-minute | character-credit |
| Billing unitDifferent records | Voice agent minute | Monthly plan + character-based synthesis debited from USD usage balance |
| Bring your telephonyDifferent records | Yes | Unknown |
| Bring your modelDifferent records | Yes | Unknown |
| Warm transferDifferent records | Unknown | Not applicable |
| HIPAA pathDifferent records | Yes | Unknown |
Your requirements & next steps
Your requirements
Ready-made / AI receptionist · Strict evidence mode
No personal requirements yet. Add criteria in Advanced Filter to prioritize this comparison.
Sales-led per-minute contract rate, not a public numerical rate.
Paid monthly subscription includes USD usage balance consumed by character-priced synthesis. Agent quote separate.
Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.
Captured pricing summary does not provide complete per-character rate/balance table; full pricing evidence requested. Do not use consumer reader plans.
Published unit; precise fee and minimum quote unresolved.
Enterprise agent pricing excluded from this ladder.
Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.
Included USD usage balance and per-character usage, not all-in agent minutes.
No included minute allowance published in reviewed page.
Captured pricing summary does not provide complete per-character rate/balance table; full pricing evidence requested. Do not use consumer reader plans.
Sales-led per-minute service and build credits are documented; no public complete rate/commitment, recurring free entitlement or provider cost inclusions established.
In-flight requests continue and small overshoot is possible; not a guaranteed complete monthly ceiling.
Sales-led per-minute service and build credits are documented; no public complete rate/commitment, recurring free entitlement or provider cost inclusions established.
Separate provider credentials and buyer deployment.
Not yet researched against this buyer-critical field standard.
Not yet researched against this buyer-critical field standard.
Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.
Self-serve TTS balance does not determine telephony, recognition, LLM and hosting spend; enterprise agent quote unknown.
Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling.
Self-serve TTS balance does not determine telephony, recognition, LLM and hosting spend; enterprise agent quote unknown.
Anyone with this link can view the encoded decision criteria.
Vendor documentation establishes a claim. Public model benchmarks are separate context, not measurements of these platforms.
Open saved comparison ↗What to verify together.
PolyAI
The public pricing page gives a billing basis, not a numeric quote.
Custom quote / current rate unresolved · V3.3 evidence review · Contract-defined minute billing; no public numeric quote
Excluded / confirm: Complete cost cannot be established from this reference. Commercial rate, commitment and workload exceptions require quote; no fabricated all-in ceiling. · Provider, carrier and custom contract terms require separate verification
Sales-led per-minute contract rate, not a public numerical rate.
Speechify
Consumer and API plans are different products.
Free $0; Starter $10; Pro $99; Scale $499 per month · V3.3 evidence review · Starter TTS API plan; credit/character schedule unresolved; Enterprise Agents separate quote
Excluded / confirm: Complete cost cannot be established from this reference. Self-serve TTS balance does not determine telephony, recognition, LLM and hosting spend; enterprise agent quote unknown. · External STT, LLM, orchestrator, carrier and hosting
Paid monthly subscription includes USD usage balance consumed by character-priced synthesis. Agent quote separate.
The evidence overlap.
Both records have documented values for Product type, Technical setup, Pricing model, Checked within 30 days, Retained price snapshot. Matching availability does not measure behavior under your call conditions.
Run the same booking, tool failure and unsuccessful human-transfer cases. Record both outcomes and billable units before signing a deployment agreement.
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