Agentic Index
Cartesia vs Rime (2026)
Cartesia and Rime both sell low latency speech infrastructure to voice agent builders with published usage pricing: Cartesia runs credit based tiers, free to prototype, Pro from 4 dollars, Startup at 39, Scale at 239 dollars a month with unlimited seats, spanning text to speech, speech to text, and full agent minutes, while Rime is text to speech focused, a Starter tier with about three thousand free minutes then pay as you go at roughly three cents a minute varying by model, Growth adding lower unit pricing and higher concurrency. Cartesia is the broader voice stack; Rime is the specialized voice model bet where its voices fit your brand.
| At a glance | Cartesia | Rime |
|---|---|---|
| Category | Agent infrastructure | Agent infrastructure |
| Entry price | Free plan; Pro from $4/mo; Startup $39/mo; Scale $239/mo; Enterprise; usage on credits and agent minutes | Free tier (3,000 min); usage from ~$0.03/min |
| Free / trial | Free plan for prototyping with limited credits, no commercial use | — |
| Pricing confidence | public exact | public partial |
| Feature |
C
Cartesia
|
R
Rime
|
|---|---|---|
| Action & orchestration | ||
|
Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
Full / Explicit | No / Not documented |
|
Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
Partial | No / Not documented |
|
Triggers & Channel Coverage How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools. |
Partial | No / Not documented |
| Knowledge & context | ||
|
Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
No / Not documented | No / Not documented |
|
Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
No / Not documented | No / Not documented |
| Control & trust | ||
|
Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
No / Not documented | No / Not documented |
|
Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
Partial | Full / Explicit |
|
Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
Partial | Partial |
|
Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
Full / Explicit | Full / Explicit |
| Solution readiness | ||
|
Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
No / Not documented | Partial |
| Platform extensibility | ||
|
Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
Partial | Full / Explicit |
|
APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
Full / Explicit | Full / Explicit |
|
Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
No / Not documented | Partial |
| Specialist automation | ||
|
Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
No / Not documented | No / Not documented |
Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing |
C
Cartesia
|
R
Rime
|
|---|---|---|
|
Entry price Lowest public entry point |
Free plan; Pro from $4/mo; Startup $39/mo; Scale $239/mo; Enterprise; usage on credits and agent minutes | Free tier (3,000 min); usage from ~$0.03/min |
|
Pricing confidence How public the numbers are |
Public — exact | Public — partial |
|
Billing Primary billing axis |
credits (characters, seconds) and agent minutes | — |
|
Variable cost Workload / overage exposure |
High variable cost | High variable cost |
|
Free tier / trial Try before you buy |
Free tier
|
No free tier
|
|
Buying motion Self-serve vs sales call |
Mixed | — |
Choose Cartesia if
- One vendor spanning speech to text, text to speech, and agents simplifies the stack.
- Credit tiers with unlimited seats fit your team structure.
- Bundled telephony rates matter for your calling workloads.
Choose Rime if
- Three thousand free minutes fund a real production pilot.
- Per model pricing around three cents a minute fits your cost target.
- Voice character and naturalness on your scripts won the bakeoff.