Kopern vs Voiceflow
Kopern
kopern.ai
Voiceflow
voiceflow.comSide by side
| Figure | Kopern | Voiceflow |
|---|---|---|
| Price from | $79/mo | $81/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 7 |
| Spec score · AI Agent Platforms | 8.1 (#29) | 8.7 (#10) |
| Agent builder | Agents can be configured with system prompts, skills, tools, and extensions, with multi-model support. | The builder combines global instructions, visual playbooks, deterministic workflows and knowledge bases. |
| Integrations | The site lists WhatsApp, Telegram, Slack, GitHub, webhooks, MCP, and an embeddable chat widget among its connectors. | Native connectors include Zendesk, Salesforce, HubSpot, Shopify, Airtable, Google Sheets, Gmail and Twilio. |
| Intended users | The pricing page positions Starter for individuals exploring AI agents, Pro for teams building production agents, and Enterprise for organizations with advanced needs. | The product is presented for CX and support leaders, engineers, enterprise teams, and agencies or partners building agents for clients. |
| Product | Kopern describes itself as a no-code AI agent builder for configuring, testing, grading, deploying, and monitoring agents. | Voiceflow is a platform for building, testing, deploying, and monitoring chat and voice agents across channels and languages. |
| Support | The pricing page lists Community support for Starter, Priority email support for Pro, Email support for Usage, and Dedicated + SLA support for Enterprise. | Official documentation directs users to Voiceflow support by email and offers enterprise product demos. |
Plans
Voiceflow
- Agencies & PartnersFree
- StarterFree
- Pro$120 a month
- Business$500 a month
- Pro$972 a year
- BusinessesPriced on request
- EnterprisePriced on request
In their own words
Kopern
Kopern is a no-code AI agent builder for configuring, testing, grading, deploying, and monitoring agents through web and API access. Agents can combine system prompts, skills, tools, extensions, and multiple models. Grading checks output matching, schemas, tool use, safety, and LLM judgments. The Optimization Lab includes prompt tuning, automated fixes, adversarial testing, model tournaments, evolution, and distillation. Connectors include WhatsApp, Telegram, Slack, GitHub, webhooks, MCP, and an embeddable chat widget; workflow orchestration connects to n8n, Zapier, and Make. Monitoring supports regression tests and Slack or email alerts when quality falls below a threshold. Authenticated endpoints include an OpenAI-compatible chat-completions API. Kopern lists human approvals, web browsing, security controls, and compliance badges. Plans range from free Starter to Pro at $79 a month and Enterprise at $499 a month; Usage is pay per use with no listed plan price.
Voiceflow
Voiceflow is a platform for building, testing, deploying, and monitoring chat and voice agents across channels and languages. Its builder combines agentic playbooks, deterministic workflows, shared instructions, and guardrails. Teams can review transcripts and call recordings, run evaluations and tests, and track analytics. Agents can reach users through a native chat widget, mobile apps, phone calls, SMS, or custom interfaces built with the Conversations API. Native integrations include Zendesk, Salesforce, HubSpot, Shopify, Airtable, Google Sheets, Gmail, and Twilio. Agents can also connect to external REST APIs, custom Functions, and MCP servers. Teams can choose from major LLM providers or bring their own model. Voiceflow says customer data is not used to train AI or machine-learning models and integrated model providers are configured for zero data retention. Its security information describes encryption at rest with customer-managed keys and encryption in transit using TLS and mTLS. The company was founded in 2019. Agencies and partners have a free-trial plan with usage-based billing; business pricing is available on request. Support includes implementation that can be self-serve or fully managed.