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smallest.ai
smallest.ai
smallest.ai scores 69/100 on xpay's Agent-Ready Index v2: partial pricing visibility; self-serve checkout is available; usage-based / per-token pricing is published; a free entry path exists.
smallest.ai pricing
Free
Free
Pro
$9/mo
flatEnterprise
Contact sales
How smallest.ai scores on the agent-ready dimensions
Public pricing visibility
15 / 15
Self-serve checkout
15 / 15
Public API + docs
0 / 20
Usage-based / metered pricing
20 / 20
Free entry path
7 / 7
No sales call required
7 / 7
Card / wallet / x402 payment
5 / 6
Machine-readable bonus (MCP / OpenAPI)
0 / 10
Total
69 / 100
What it actually costs at typical scale
Pro plan, no additional usage
$9/mo
Can an autonomous agent transact here?
Can create account
Can enter payment method
Can upgrade plan
Can buy more usage
Can cancel online
Payment methods
Human approval recommended
Pricing transparency
full
Purchase motion
self_serve
Demo required
Quote required
Annual commit required
Auto-renewal mentioned
Cancellation policy visible
Refund policy visible
Invoice payment available
Purchase orders supported
MSA required
DPA available
Security review required
Trust & compliance
Certifications
SSO / SAML
RBAC
Audit logs
Unknown
Positioning & ecosystem
“Start small. Scale Big.”
Buyer persona
Six-step check: can an agent actually buy from smallest.ai?
Discover price
Select a plan
Pay per task
Avoid a sales call
API docs without auth
Estimate cost upfront
Pros and cons for AI agents
Observational summary written by xpay from the signals captured on 2026-05-06. Not a review of the product — only of its current pricing posture for agent buyers.- Pricing is publicly visible on an indexable page — agents can read tiers without scraping past auth.
- Every advertised tier is self-serve; no tier requires scheduling a call.
- No per-unit price was advertised, so an agent has no way to estimate the cost of a single task.
- API documentation is gated or absent; an agent cannot inspect the integration surface without authentication.
- No /.well-known/ai-pricing.json or equivalent machine-readable pricing manifest is published — agents must rely on HTML scraping.
How smallest.ai could lift its score
Add at least one self-serve paid tier with a checkout link, so an agent can pay without a sales call.
| pricing_visible | true |
| headline_phrasing | Real Time Voice AI, Built to Scale — Start small. Scale Big. Choose a plan to unlock features and increase limits. |
| tier_count | 1 |
| lowest_paid_entry_usd | 1000 |
| free_tier | false |
| free_tier_terms | null |
| per_unit_price | $0.20/ 10k charactersCustomLightning V |
| annual_required | false |
| self_serve_paid_tiers | 0 |
| sales_only_tiers | 1 |
| public_api_docs_url | null |
| api_docs_auth_walled | null |
| ai_pricing_json_present | false |
| agents_txt_present | false |
| anonymous_purchase_path | false |
| per_unit_classification | {"unit_class":"other","confidence":"medium","agent_task_price_forecastable":"yes","rejected_reason":null,"evidence_text":"$0.20/ 10k charactersCustomLightning V"} |
| usage_headline_present | false |
| custom_tier_present | true |
| agent_friendly | {"ai_pricing_json":false,"agents_txt":false,"llms_txt":true,"sitemap_xml":true,"mcp_server_card":false,"agent_skills_index":false,"x402_supported":false} |
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See agent-ready pickssmallest.ai
69
/ 100 (rubric v2.0)Text To Speech
Real Time Voice AI, Built to Scale — Start small. Scale Big. Choose a plan to unlock features and increase limits.
1
No
$1000/mo
$0.20/ 10k charactersCustomLightning V
0 / 1
Auth-walled
No
Not published
2026-05-09
Tier-based subscription
smallest.ai pricing starts at $0/mo for the Free plan; paid plans up to $9/mo. Billed monthly.
Free plan (Free)
Discovery files and protocols
Side-channel signals — informational, not part of the score. Each protocol is independent; adoption signals the publisher is thinking about agent buyers.ai-pricing.json
agents.txt
llms.txt
sitemap.xml
MCP Server Card
Agent Skills
x402 / MPP
Compare smallest.ai with peers
Highest-scoring companies in the same category that an AI agent might evaluate as an alternative.Google Cloud Text-to-Speech
85
DupDub
73
Voiser
71
Uberduck
70
Voicemaker
69
Narration Box
69
Free TTS
69
Sleepytales
69
Explore the Agent-Ready SaaS Index
25,480+ SaaS scored on agent-buyability — browse by readiness band, category, or jump straight to a pay-per-run tool on xpay.tools.
