Agentic Index

Corti vs Phonic (2026)

Corti last verified ·Phonic last verified

Corti and Phonic both sell voice AI to developers at public usage prices. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.

Corti is healthcare infrastructure, with clinical speech to text, medical coding, text generation and EU hosted Corti Models, with an Agentic Framework of connectors, traces and more than 20 agents, with speech to text at $0.0065 a minute, agents at $4 and $16 per million input and output tokens, and $50 of free credits. Phonic is a general speech to speech voice agent platform on its own audio models, with tools by webhook, WebSocket and MCP, deployment on phone numbers, SIP trunks, LiveKit or apps, and scored calls, from a free Starter plan with $30 of monthly credits at $0.14 a minute. Corti ships an Agent Library of more than 20 agents, among them ICD 10 navigation and code validation, and lets customers pick among its own model tiers. Phonic adds SSO over SAML or OIDC, pass or fail evaluation prompts on every conversation, and calls over Twilio, Telnyx or Amazon Connect. Choose Corti for clinical language building blocks. Choose Phonic for live voice agents on the phone.

On the Agentic Index healthcare agent ranking, neither Corti nor Phonic clears the bar, which asks for all five chart loop capabilities documented in full. Corti documents two of the five in full; Phonic does not document knowledge grounding and RAG in full, nor human oversight and guardrails. 4 of the 69 vendors in the lane clear it. See the healthcare agent ranking

On the Agentic Index agent infrastructure ranking, neither Corti nor Phonic clears the bar, which asks for all five production contract capabilities documented in full. Corti documents two of the five in full; Phonic does not document model flexibility and routing in full. 33 of the 186 vendors in the lane clear it. See the agent infrastructure ranking

This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Corti and Phonic are each graded against the same 14 capability Agentic Index taxonomy, from the vendor's own public materials under the Agentic Index verification standard, alongside 1,084 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded

Choose Corti if

  • You are building clinical documentation or coding and need medical speech recognition and coding models.
  • Models must be hosted in the EU.
  • A library of prebuilt healthcare agents should come with the framework.

Choose Phonic if

  • You are building live voice agents that answer and place calls.
  • Calls should be scored against evaluation criteria you define.
  • Access should run through SSO with SAML or OIDC and member roles.
Feature
C
Corti
P
Phonic
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.

Workflow Orchestration

Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps.

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.
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.

Memory & State Persistence

Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer.
Control & trust

Human Oversight & Guardrails

Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls.

Security, Identity & Governance

RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy.

Observability & Auditability

Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior.

Deployment & Data Residency

Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting.
Solution readiness

Prebuilt Agents, Templates & Packs

Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value.
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.

APIs, SDKs & MCP Extensibility

Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems.

Testing, Debugging & Optimization

Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment.
Specialist automation

Browser & Computer Use

Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone.

Pricing snapshot

Sourced from the Index pricing dataset · open each vendor's profile for full detail.

Pricing
C
Corti
P
Phonic

Entry price

Lowest public entry point

 Pay as you go, with speech to text at $0.0065 per minute and agents, coding and text generation at $4 and $16 per million input and output tokens. $50 of free credits to start. $0.14/min on Starter ($0/mo with $30 monthly credits); Pro $240/mo at $0.12/min

Pricing confidence

How public the numbers are

 Public, exact Public, exact

Billing

Primary billing axis

 Credits from one balance, with audio billed per minute and text per million input and output tokens. per conversation minute

Variable cost

Workload / overage exposure

 High variable cost High variable cost

Free tier / trial

Try before you buy
No free tierTrial
Free tier

Buying motion

Self-serve vs sales call

 Mixed Mixed

Pricing verified

When this pricing was last checked

Product updates

Newest first, each linked to its source.

Corti

  • · Agent capability

    Updated German and French speech to text models, including the Swiss variants, are now available from Corti.

    Source

  • · Human approval / guardrails

    Corti updated Guided Generation to pass user edited, added, and discarded facts with explicit type metadata.

    Source

  • · Deployment / data residency

    Corti partnered with the Danish Center for AI Innovation to launch a Sovereign AI Control Layer for European enterprises.

    Source
All 3 Corti updates →

Phonic

  • · Agent capability

    Phonic-1 is Phonic's own speech to speech model for voice agents, available to customers now.

    Source

  • · Agent capability

    Phonic's Python SDK v0.32.39 and TypeScript SDK 0.32.33 add web_search to the built in tools a voice agent can be given, alongside keypad input and natural conversation ending.

    Source
All 2 Phonic updates →

Both publish usage prices. Model your own minute and token volumes before comparing.

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