Best for
Best for sales, recruiting and client teams whose meeting notes have to land in a CRM or applicant tracking system rather than a folder.
- Freelancers
- Small and mid-sized
- Enterprise
AI Voice & Speech Comparison
Fireflies.ai vs. Synthflow
At a glance
At a glance
Best for
Best for contact centres and outsourcers that want phone agents built, branded and launched under one contract.
- Enterprise
Cataleo does not name a winner. Both statements come from the vendors themselves.
Full Comparison
| Criterion | Fireflies.ai | Synthflow |
|---|---|---|
| Starting price | lower value Free plan; Pro from $10 / seat / month The $10 rate is billed annually; on monthly billing Pro is $18 per seat. Business is $19 billed annually or $29 monthly, and Enterprise $39 per seat / month on annual billing only. | From $30,000 / year Enterprise contracts start there and are scoped around call volume, concurrency, telephony setup, integrations, security needs and launch support. No self-serve tier is published. |
| Free trial | Free plan | Not stated |
| Commercial use | Not stated | Yes, under an enterprise contract |
| Output | Transcripts, AI summaries with overviews, bullet points and action items, plus searchable meeting notes | Voice and chat agents for inbound and outbound phone calls, including white-labelled agents resold under a partner's brand |
| API | Yes, from the Business plan | Yes, a public Platform API, plus an MCP server for MCP-capable clients |
| Languages | More than 100 languages with automatic language detection; the vendor marks the wider set as beta | Over 30, plus a multilingual mode that switches languages within one call |
| Hosting | Cloud, with a Chrome extension for Google Meet plus mobile and desktop apps | Cloud, with region-based hosting |
| Voice cloning | No, Fireflies transcribes and summarises speech and does not synthesise or clone voices | Cloning happens in ElevenLabs, not in Synthflow. The voice selector offers Synthflow's own TTS with twelve built-in voices and the ElevenLabs models from Turbo v2 and Flash v2.5 up to v3; a cloned or provider-specific voice is added through Imported > Import Voice by pasting the provider voice ID, or by connecting your own ElevenLabs API key so that account's custom voices appear in the selector. The vendor warns that a synthesiser model your own ElevenLabs plan lacks can mean lower quality or higher latency on your key |
| Real-time use | Yes, a bot joins the call and records it live, and the mobile and desktop apps capture conversations held in person | Yes, live inbound and outbound calls, with IVR handling for outbound agents, voicemail and silence handling, in-call SMS and WhatsApp messaging, and WhatsApp Business calling. The vendor states 99.99% uptime on its own telephony infrastructure |
| Speech-to-speech and dubbing | No dubbing or speech-to-speech translation is published | Not documented. The voice documentation covers text-to-speech for live agents, with a speaker and a synthesis model chosen per agent, and carries no speech-to-speech conversion and no dubbing |
| Editing and controls | AI summaries with overviews, bullet points, action items and custom notes, speaker talk-time analytics, sentiment analysis, topic trackers and AI filters, plus AskFred for questions across past meetings | Flow Designer, a node-based canvas with conversation, message, branch, jump and custom action nodes, or a simpler prompt builder, plus a multi-agent system for several flows behind one agent, voice model and pacing settings, manual testing, automated simulations and custom evaluations that score calls against business goals |
| Consent and trust | The vendor states SOC 2 Type II, GDPR and HIPAA compliance, zero data retention and private dedicated storage with customer data ownership; Enterprise adds custom data retention and a super admin role | SOC 2, HIPAA, PCI DSS, GDPR and ISO 27001, with encryption, audit logs and region-based hosting. Per-agent controls decide whether recordings and transcripts are kept at all, cap retention at 30 days, and redact personal data from transcripts, webhook payloads and logs |
| MCP-ready | No | stated Yes |
| Deployment | Cloud (SaaS), Browser-based | Cloud (SaaS), Browser-based |
| Support | Email helpdesk | Email helpdesk |
| Onboarding | Documentation and knowledge base | more entries Documentation and knowledge base, Personal consulting |
| Company size | more entries Freelancers, Small and mid-sized, Enterprise | Enterprise |
| Integrations | more entries Zoom, Microsoft Teams, Google Meet, Webex, GoToMeeting, Dialpad, Lifesize, Aircall, RingCentral, Zoom Phone, OpenPhone, Salesforce, HubSpot, Affinity, Slack, Notion, Google Docs, OneNote, Confluence, Microsoft SharePoint, Linear, Airtable, Asana, Microsoft To Do, Greenhouse, Lever, BambooHR, Google Drive, Dropbox, Microsoft OneDrive, Box, Zapier | HubSpot, Salesforce, Zapier, Cal.com, GoHighLevel, Twilio, Genesys, Avaya, Five9, Cisco, RingCentral |
Add a tool
Adds a column to the table, from the tools in this category.
Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.
The short version
Key Differences
- Starting price Fireflies.ai Free plan; Pro from $10 / seat / month Synthflow From $30,000 / year
- Company size Fireflies.ai Freelancers, Small and mid-sized, Enterprise Synthflow Enterprise
- Hosting Fireflies.ai Cloud, with a Chrome extension for Google Meet plus mobile and desktop apps Synthflow Cloud, with region-based hosting
- Languages Fireflies.ai More than 100 languages with automatic language detection; the vendor marks the wider set as beta Synthflow Over 30, plus a multilingual mode that switches languages within one call
- MCP-ready Fireflies.ai No Synthflow Yes
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Strengths and Limitations
Fireflies.ai
Strengths
- Covers Zoom, Microsoft Teams, Google Meet, Webex, GoToMeeting, Dialpad and Lifesize, plus dialers and uploaded audio files
- More than 100 languages with automatic detection
- Over 100 integrations carry summaries into CRM, ATS, chat and docs
- SOC 2 Type II, GDPR and HIPAA compliance with zero data retention
Limitations
- Transcription only, no text-to-speech or voice cloning
- API access, analytics and private channels all start at the Business plan
- The vendor marks the wider language set as beta
Synthflow
Strengths
- No-code Flow Designer with a multi-agent system, so a non-developer can build and change call flows
- Connects to existing telephony and contact centre stacks over SIP, including Genesys, Avaya, Five9, Cisco and RingCentral
- White-labelled deployments for partners reselling voice agents under their own brand
- SOC 2, HIPAA, PCI DSS, GDPR and ISO 27001, with agent-level retention and PII redaction controls
Limitations
- No self-serve or trial tier is published; the only listed plan is an enterprise contract from $30,000 per year
- Pricing is scoped by sales, so the cost of a given call volume is not knowable from the website
- Latency figures differ between the vendor's own pages, so the published number is not a specification to rely on
- A cloned voice has to be created in a separate ElevenLabs account and imported, so it means a second subscription alongside Synthflow
Plans
Pricing
Fireflies.ai
- Free $0 Free forever for one person: limited AI summaries, 400 minutes of storage per team and 20 AI credits a month.
- Pro $10 / seat / month Billed annually, or $18 per seat on monthly billing. Unlimited transcription and AI summaries, 8,000 minutes of storage per seat, video recording, downloads, the personal and email assistants and unlimited integrations.
- Business $19 / seat / month Billed annually, or $29 per seat on monthly billing. Unlimited storage, 30 AI credits, multi-language mode, conversation intelligence, team analytics for admins, public meeting access, user groups and private channels.
- Enterprise $39 / seat / month Annual billing only. Adds the rules engine, SSO and SCIM, audit logs, HIPAA compliance, private storage, custom data retention, a super admin role and a dedicated account manager.
Synthflow
- Enterprise $30,000 Per year, the stated starting point. Scoped around call volume, concurrency, telephony setup, integrations and security needs, and covers implementation, onboarding, testing, training, launch support and ongoing optimisation, with SLA and support terms set in the contract.
What users say
Review Scores · opens after launch
Fireflies.ai
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Synthflow
- Ease of use
- Not rated yet
- User interface
- Not rated yet
- Onboarding
- Not rated yet
- Support and service
- Not rated yet
- Value for money
- Not rated yet
- Features
- Not rated yet
No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.
Where this comes from
Where this comes from
Fireflies.ai https://fireflies.ai · checked against the official source on 2026-09-12
Synthflow https://synthflow.ai · checked against the official source on 2026-09-13
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.