Rime website screenshot

Rime

Rime is a realtime text-to-speech platform optimized for low-latency conversational agents. Models include Arcana v3, Arcana v2, Mist v3, and Mist v2. The TTS API supports streaming HTTP, WebSocket (binary and JSON), Server-Sent Events, and JSON envelopes for MP3, mu-law, OGG, and WAV audio.

Rime publishes 1 API on the APIs.io network: Plants API. Tagged areas include Artificial Intelligence, Voice, TTS, Real-Time, and Conversational.

Rime’s developer surface includes authentication, engineering blog, documentation, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
28.4/100 thin ▬ flat Agent 36/100 agent ready Full breakdown ↓
scored 2026-08-21 · rubric v0.12.0
AccessPaidSelf serve
2 APIs
Artificial IntelligenceVoiceTTSReal-TimeConversational

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-21 · rubric v0.12.0
Composite quality — 28.4/100 · thin
Contract Quality 11.9 / 25
Developer Ergonomics 4.8 / 20
Access Clarity 3.2 / 20
Operational Transparency 1.0 / 13
Contract Governance 0.0 / 12
Discoverability 7.6 / 10
Agent readiness — 36/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/rime-ai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Rime TTS API

Realtime text-to-speech API supporting streaming HTTP, WebSocket, and SSE delivery for Arcana and Mist models. Authentication via API key. Audio formats include MP3, mu-law, OGG...

Rime Plants API

The Plants API from Rime — 2 operation(s) for plants.

Open Collections 3

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

OpenAPI Plant Store Plants API

OPEN COLLECTION

OpenAPI Plant Store

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Rime Ai Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rime Ai Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Rime Ai Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Rime Ai Authentication

http · 1 scheme

SECURITY

Rime Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Rime Ai Agentic Access

3 operations · 2 acting

3 operations · 2 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

Blog
Blog
 LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: rime-ai
url: https://raw.githubusercontent.com/api-evangelist/rime-ai/refs/heads/main/apis.yml
name: Rime
kind: company
description: Rime is a realtime text-to-speech platform optimized for low-latency conversational agents. Models include Arcana
  v3, Arcana v2, Mist v3, and Mist v2. The TTS API supports streaming HTTP, WebSocket (binary and JSON), Server-Sent Events,
  and JSON envelopes for MP3, mu-law, OGG, and WAV audio.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/rime-ai.png
tags:
- Artificial Intelligence
- Voice
- TTS
- Real-Time
- Conversational
tags_raw:
- AI
- Voice
- TTS
- Realtime
- Conversational
created: '2026-05-08'
modified: '2026-05-08'
specificationVersion: '0.23'
apis:
- aid: rime-ai:tts
  name: Rime TTS API
  description: Realtime text-to-speech API supporting streaming HTTP, WebSocket, and SSE delivery for Arcana and Mist models.
    Authentication via API key. Audio formats include MP3, mu-law, OGG, and WAV. List voice and voice details endpoints provide
    voice catalog metadata.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://docs.rime.ai/api-reference
  baseURL: https://users.rime.ai
  tags:
  - TTS
  - Streaming
  - WebSocket
  - SSE
  - Real-Time
  tags_raw:
  - TTS
  - Streaming
  - WebSocket
  - SSE
  - Realtime
  properties:
  - type: Documentation
    url: https://docs.rime.ai/api-reference
  - type: Pricing
    url: https://www.rime.ai/pricing
  - type: LlmsText
    url: https://docs.rime.ai/llms.txt
- aid: rime-ai:rime-ai-plants-api
  name: Rime Plants API
  description: The Plants API from Rime — 2 operation(s) for plants.
  humanURL: https://docs.rime.ai/api-reference
  baseURL: https://users.rime.ai
  tags:
  - Plants
  properties:
  - type: OpenAPI
    url: openapi/rime-ai-plants-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/rime-ai-agentic-access.yml
- type: DomainSecurity
  url: security/rime-ai-domain-security.yml
- type: Authentication
  url: authentication/rime-ai-authentication.yml
- url: https://rime.ai/resources/
  type: Blog
- type: LinkedIn
  url: https://www.linkedin.com/company/rime-ai
- type: Website
  url: https://rime.ai/
- type: Documentation
  url: https://docs.rime.ai/
- type: Plans
  url: plans/rime-ai-plans-pricing.yml
- type: RateLimits
  url: rate-limits/rime-ai-rate-limits.yml
- type: FinOps
  url: finops/rime-ai-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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