CosVoice

CosVoice provisions a dedicated US phone number and an email address ([email protected]) and wires both to an AI agent over MCP (a remote server at cosvoice.com/mcp with OAuth 2.1/PKCE, no key to paste) or a REST API with signed webhooks. The line answers inbound calls in a full-duplex voice, runs a structured intake instead of taking a voicemail message, and can place outbound calls on the owner's instruction — booking a restaurant table, calling a contractor back, or waiting on hold and then ringing the owner's mobile once a human picks up. Every call produces a written debrief (summary, outcome, structured fields, transcript) delivered by email and to the connected Bot's chat. It works with Grok Bot, Claude, ChatGPT, and Cursor over MCP; Meta's Muse connects separately via API key against a published OpenAPI 3.1 spec at cosvoice.com/openapi.json. Source: vendor docs and FAQ (https://cosvoice.com/docs, https://cosvoice.com/faq).

The vendor's own FAQ states OpenTable, Resy, Tock, and DoorDash do not currently let outside AI assistants book or order through their apps, so CosVoice's fallback is to have the agent call the business directly and negotiate like a person would — asking for a table, giving a callback number, confirming details. That's a real, verifiable gap in those platforms' agent access today (per CosVoice, unconfirmed independently against each platform's own developer terms), and it is the reason a phone line is a genuinely different capability from a shopping or calendar MCP connector rather than a redundant one. Source: https://cosvoice.com/faq, https://cosvoice.com/llms.txt.

Three tiers, all metered on call minutes rather than users: Starter $29/month with 60 minutes included, Plus $69/month with 200 minutes, Pro $149/month with 600 minutes. Extra minutes are $0.25 each on every tier, rounded up per call, and a typical booking or intake call runs three to four minutes — so 60 minutes is roughly 15 calls a month. Texts and email never draw down minutes. A founding-member offer locks Plus at $49/month for the first 12 months while seats last. The model means cost tracks how much the agent is actually on the phone, which is fair for light use (a personal assistant making a few calls a week) but scales linearly with any heavier use case — a business using the line as a real front desk could burn through Pro's 600 minutes quickly. Source: https://cosvoice.com/pricing (verified 2026-09-27, JSON-LD Offer blocks match the rendered plan cards).

The vendor states the line always identifies itself as an AI when asked, never claims to be a person, and never reads out a card number or agrees to a charge on a call — a booking or appointment is the most it can commit the owner to; anything involving payment routes back to the owner. It also states no call audio is stored (only transcripts and structured notes), calls are not used to train models, and closing a line deletes call content within 30 days. These are stated policies, not independently audited, but they are specific and falsifiable claims rather than generic 'enterprise-grade security' language. Source: https://cosvoice.com/trust, https://cosvoice.com/privacy.

CosVoice is run by MimesisIQ LLC, per the site footer; no further public information on the company (size, funding, other products) was found. The domain cosvoice.com was registered September 10, 2026, per WHOIS (Cloudflare-registered, registrant redacted) — the whole product is roughly two weeks old at time of writing. Its GitHub org (github.com/CosVoice) was created September 15, 2026, and holds a small open-source MCP server package (cosvoice-mcp, MIT-licensed, 0 stars) plus a Cursor plugin and several 'awesome-list' repos that are unrelated forks, not the product itself. Sources: WHOIS lookup (https://who.is/whois/cosvoice.com, checked 2026-09-27), GitHub API (https://api.github.com/orgs/CosVoice).

No independent reviews, press coverage, user testimonials, or third-party benchmarks were found. The only comparison content is CosVoice's own page contrasting itself with xAI's Voice Agent Builder, dated 18 September 2026 and explicitly self-sourced from xAI's console and docs — useful as a feature breakdown but not independent verification. There is no public status page (status.cosvoice.com does not resolve) and no changelog beyond the site's own /llms.txt page notes. This is normal for a two-week-old product and not itself a red flag, but it means every operational claim on this page — reliability, call quality, accuracy of the intake summaries — currently rests on the vendor's word alone.

CosVoice's own schema markup explicitly disclaims any relation to CosyVoice (FunAudioLLM/CosyVoice on GitHub), the open-source speech-synthesis model from Alibaba's Tongyi Lab — a name collision the vendor flags itself rather than one we found independently. If you're looking for an open-source TTS engine, that's a different, unrelated project. Source: https://cosvoice.com/trust (Organization JSON-LD disambiguatingDescription).