Top 9 of 18 alternatives
9 Ada alternatives (2026)
The closest alternatives to Ada in October 2026 are VeraDial, Kalyvox and Mixdesk.
9 agents compared · entry plans $10 to $111 a month · 2 with a free plan · prices checked 11 September–24 October 2026
Reviewed by The Agents Index editorial team.
Ada and its alternatives at a glance
| Agent | Best for | Starts at | Better than Ada at | Checked |
|---|---|---|---|---|
| Ada | Enterprises that want a long-running, well-capitalized AI support agent vendor with a public V2 REST API and an MCP server, rather than a sales-only integration surface. | On quote source | 20 October 2026 | |
| Cresta | Large enterprises running high-volume | On quote source | Debugs and fixes, Multi-agent | 13 September 2026 |
| Sierra | Large enterprises that want branded, autonomous customer agents that resolve issues end to end and are willing to run a managed engagement. | On quote source | Debugs and fixes, Agent permissions | 26 September 2026 |
| AiZipZap | trades, freelancers and IT teams that field vague customer enquiries by email | Free, then $9/month source | Free tier, Pooled budget | 19 October 2026 |
| Fin | Support teams from mid-market to enterprise that want an AI agent layered over their existing helpdesk with pay-per-resolution economics, omnichannel coverage and a built-in tuning loop. | From $0.99/outcome source | Agent permissions, Free tier | 24 October 2026 |
| Auto-Respond | Local service business owners who lose leads to slow follow-up and want phone and marketplace messages answered and booked automatically on their own calendar. | From $10/month source | Free tier, Pooled budget | 11 September 2026 |
Shortlist
Closest alternatives to Ada
The ones people open most here come first, then the closest matches. How we rank
- 01
VeraDialVerified
AI receptionist and verified US/Canadian business line that answers calls and texts and places outbound calls.
From $14.99/monthWhy it's on this listFree tier · PartlyThere is no standing free plan, which the vendor states outright, but Vera Lite and Vera Plus each open with a 7-day free trial on capped minutes, Vera Business starts paid with no trial, and a browser demo needs no signup.Source ↗
Where it improves on Ada
- +Seat model · YesSeats are not charged for but they are capped: the owner plus one teammate on Plus and up to three on Business, with each teammate getting their own login and assigned lines.Source ↗
- +Pooled budget · YesOne balance serves the whole account: receptionist, calling, AI-calling and translation minutes are monthly totals shared across every active line and teammate.Source ↗
Trade-offs against Ada
- −Done-for-you service · NoYou run the software yourself: the vendor explicitly removes the onboarding call and sales demo, and setup is a self-serve number pick plus a website URL, though the Business tier suggests a pre-purchase scoping conversation.Source ↗
- −Claude · NoClaude is supported only as a client that reads your account through the MCP connector; the vendor's own complete list of voice providers for AI calls does not include Anthropic, so Claude does not drive the conversations.Source ↗
- −API access · PartlyNo public REST API is documented; programmatic reach is signed outbound event webhooks from Vera Plus upward, plus a read-only connector, so you can receive events but not drive the product from your stack.Source ↗
- 02
KalyvoxVerified
AI phone receptionist that answers inbound calls, qualifies them, transfers or books appointments.
From $95/monthWhy it's on this listAgent permissions · YesWhat the assistant may do is bounded by configuration: call reasons, questions, transfer rules and business information you enter, and the vendor publishes deliberate limits including refusing to answer outside that scope or to place outbound calls.Source ↗
Where it improves on Ada
- +Free tier · PartlyYou can start without talking to sales or entering a card, but only for seven days: there is no standing free plan, and after the trial you either pick a paid plan or the account pauses.Source ↗
- +Seat model · YesSeats are the main plan differentiator with a hard ceiling on the lower tiers: one user on Solo, up to five on Pro, unlimited on Business, and the seat count does not change the per-minute usage rate.Source ↗
Trade-offs against Ada
- −GPT · PartlyThe only model-vendor disclosure anywhere on the site is a sub-processor entry naming OpenAI for voice processing and transcription; there is no plan row, docs page or settings screen that offers GPT as a selectable model, so this is a supply-chain fact rather than a supported-model claim.Source ↗
- −API access · PartlyThere is a documented public REST API with bearer keys, ticket endpoints, cursor pagination and a ticket.created webhook, plus a public OpenAPI 3.1 spec — but key creation is only offered from the Pro plan upwards, so Solo customers cannot drive it from their own stack.Source ↗
- −MCP server · PartlyAnother AI can query Kalyvox through the ChatGPT connector, included from Solo, but it is read-only and scoped to authorised data categories; the vendor documents no MCP server, and its own REST API is the only other programmatic route.Source ↗
- 03
MixdeskVerified
Omnichannel customer engagement platform with AI Agents for support, sales and lead qualification.
From FreeWhy it's on this listModel choice · PartlyThe built-in AI Agent gives no model picker, but you can route conversations to a Dify or Coze bot you built yourself, including a self-hosted Dify deployment, where the model choice is yours.Source ↗
Where it improves on Ada
- +Free tier · YesA standing Free plan costs nothing and needs no card, though it caps conversations at ten and excludes AI Agents entirely.Source ↗
- +Pooled budget · YesAllowances belong to the workspace, not the person: the plan's monthly AI messages, conversations and channel accounts are shared by the whole team, and running out means buying a pack for the workspace.Source ↗
Trade-offs against Ada
- −Done-for-you service · NoYou run the software yourself on a subscription; the vendor sells plans and provides onboarding help on higher tiers rather than operating agents for you.Source ↗
- −Runs autonomously · PartlyAI Agents reply to customers around the clock without a person present, but they only act once assigned through an automation workflow and the vendor tells you to configure a fallback and human handoff.Source ↗
- −API access · PartlyA documented REST API returns conversations and contacts and can send Telegram messages, but the plan table and pricing notes place webhooks and API access on the quote-only Expert tier.Source ↗
- 04
VoiceFleetVerified
Inbound AI phone receptionist for small businesses: answers calls, captures bookings, escalates urgent callers.
From €99/month (about $111)Why it's on this listFree tier · PartlyThere is a free way in but no standing free plan: every tier carries a 7-day trial with no setup fee, after which a paid plan starting at EUR 99 per month is the only path.Source ↗
Where it improves on Ada
- +Pooled budget · YesOne monthly minute balance serves the whole account rather than individual users, and when it runs out with hard stop active inbound AI calls pause instead of overflowing into overage.Source ↗
Trade-offs against Ada
- −In a browser · PartlyA hosted dashboard is where you configure and review calls, but the analytics dashboard is gated to Growth and Pro and multi-location management to Pro only, so the entry tier gets a thinner web surface.Source ↗
- −API access · PartlyProgrammatic output exists only as outbound webhooks and only on the top tier; no public REST API, keys or developer documentation are published, so you can receive events but not drive the assistant from your own stack.Source ↗
- −Seat model · NoNothing is priced per seat: the three plans differ by included minutes and parallel call capacity, and no per-user charge, seat floor or seat ceiling appears in the 30-row comparison table.Source ↗
- 05
Cresta
Enterprise contact-centre platform with autonomous voice and digital AI agents plus real-time human agent assist.
Why it's on this listDebugs and fixes · PartlyConductor diagnoses production failures and makes the change once a human approves, but the fix lands in the Cresta agent configuration, not in your repository.Source ↗
Where it improves on Ada
- +Multi-agent · YesAgents are built as a decentralised network of specialised subAgents, each with its own prompts, knowledge, tools and guardrails, collaborating on one conversation.Source ↗
Trade-offs against Ada
- −Claude · PartlyAnthropic is named as a sub-processor supplying natural-language APIs, which is the closest Cresta comes to confirming Claude in its stack; buyers are never offered a named model to select.Source ↗
- −GPT · PartlyOpenAI and Microsoft are named sub-processors supplying natural-language APIs; model choice per task is not published.Source ↗
- −How it meters · PartlyCresta names its pricing dimensions - products, agent count, conversation volume, channels and languages - but publishes no rate, no unit price and no overage figure, so cost is quoted per deployment.Source ↗
- 06
Sierra
Enterprise platform for customer-service AI agents across voice, chat, email and messaging, priced by outcome.
Why it's on this listDebugs and fixes · PartlyGhostwriter diagnoses its own failed simulations and implements the fix; the failure it repairs is agent behaviour, never a defect in your software.Source ↗
Where it improves on Ada
- +Agent permissions · YesAutonomy is configurable per workflow: you set goals and guardrails and name the steps that require human sign-off before the agent proceeds.Source ↗
Trade-offs against Ada
- −Claude · PartlyAnthropic is a named AI-services subprocessor, so Claude is in the mix, but Sierra routes models itself and never exposes a Claude selector.Source ↗
- −GPT · PartlyOpenAI is listed as an AI-services subprocessor, so GPT models are used under the hood, chosen by Sierra's router rather than by the buyer.Source ↗
- −MCP server · PartlyAgents are exposed over MCP for the ChatGPT Apps channel; a general MCP server other agents may query is not documented publicly.Source ↗
- 07
AiZipZapVerified
Customer intake agent that turns each request into a job brief, missing questions and a reply draft.
From FreeWhy it's on this listFree tier · YesA standing free tier runs real requests through the manual agent with no account and no card, capped at three successful handoffs per network each UTC day.Source ↗
Where it improves on Ada
- +Pooled budget · YesOne allowance covers everything on the account: hosted submissions and the manual agent draw on the same monthly and daily handoff pool.Source ↗
Trade-offs against Ada
- −Ships it · NoThe vendor states the agent cannot deploy, send or purchase anything: it stops at a downloadable draft that a person acts on.Source ↗
- −Runs autonomously · PartlyCollection, saving, drafting and notification run without a human, but the vendor stops deliberately at the draft: the owner reviews, edits and sends every reply themselves.Source ↗
- −Multi-agent · NoOne drafting pass per request is described throughout; the vendor's concurrency statement describes shared generation capacity, not agents coordinating on a task.Source ↗
- 08
Fin
Intercom's customer agent that resolves support conversations across chat, email, voice and social channels.
From $0.99/outcomeWhy it's on this listAgent permissions · YesThe buyer sets the boundary: Procedures apply business rules and can require approvals, data access can be restricted to named fields, and Fin escalates rather than answering when confidence thresholds fail.Source ↗
Where it improves on Ada
- +Free tier · PartlyYou can start without a sales call, but only on a 14-day cardless trial: there is no standing free plan, though eligible early-stage startups get a year of Fin free under a separate programme.Source ↗
- +Pooled budget · YesSpend pools at workspace level rather than per teammate: outcomes and Operator credits are counted for the whole workspace, with shared alerts and a hard limit you set once for everyone.Source ↗
Trade-offs against Ada
- −Claude · PartlyAnthropic is one of the providers Fin falls back to for resilience, but the answer model is Intercom's own Apex and the buyer is not offered a model picker, so Claude is under the hood rather than selectable.Source ↗
- −GPT · PartlyOpenAI models are part of the same automatic failover pool as Anthropic and Google, so GPT is used by the platform but is not a model the customer chooses or configures on any tier.Source ↗
- −Open models · NoThe enumerated provider list is OpenAI, Anthropic, Google and Intercom's own models; no open-weight option is offered.Source ↗
- 09
Auto-Respond
AI answering service and voice agent that answers calls and marketplace texts, qualifies leads and books jobs.
From $10/monthWhy it's on this listFree tier · PartlyThere is a 7-day trial and no sales call is required, but it is conditional on being a first-time customer and location and shown in the order summary; there is no standing free plan.Source ↗
Where it improves on Ada
- +Pooled budget · YesEveryone with access draws on the same business subscription and one shared usage meter; the documented $100 figure only triggers an invoice rather than capping what the team can spend.Source ↗
Trade-offs against Ada
- −Writes code · NoScope is inbound and outbound phone and messaging lead handling; nothing on the site claims code authoring.Source ↗
- −Writes tests · NoNo test generation of any kind; outputs are spoken replies, drafts, bookings and call summaries.Source ↗
- −Ships it · NoIts terminal action is a confirmed calendar booking and a CRM handoff, not a deployment.Source ↗
What to watch for
- AdaEnterprise, sales-led only. No self-serve signup, no public pricing and no free trial.
- CrestaFull-platform pricing (AI Agent, Conversation Intelligence, Knowledge Agent) is not published, only the narrower Agent Assist SKU has any public price.
- SierraNo public sign-up, pricing page or self-serve API, access is via an enterprise sales engagement.
- FinWhat counts as a billable "resolution" includes soft outcomes (customer stops replying), which can inflate spend relative to true resolutions.
- Auto-RespondPricing is split across separate line items (per source, per voice number, per minute of talk time, plus optional SMS add-on), which makes it harder to know total monthly cost without configuring the exact channel mix first
Side by side
Compare Ada with the shortlist
Compare alternatives to Ada
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Questions buyers ask
What are the best alternatives to Ada?
VeraDial, Kalyvox and Mixdesk are the closest. They share the most of Ada's features.
What is the cheapest alternative to Ada?
Mixdesk and AiZipZap have a free plan. The lowest paid plan is Auto-Respond, from $10/month. Price checked on 11 September 2026.
Which agents here have a free plan?
2 of the 9: Mixdesk and AiZipZap.
How much do Ada alternatives cost?
Entry plans run from $10 to $111 a month, and half cost $14.99 or less.
When were these prices checked?
Between 11 September 2026 and 24 October 2026, each read on the maker's own pricing page.
Sources and method
Closest first: most of Ada's features, then the fewest gaps. How we rank
Every price here was read on the maker's own pricing page.
- Ada: ada.cx/platform, checked 20 October 2026
- VeraDial: veradial.com/pricing, checked 22 September 2026
- Kalyvox: kalyvox.ai/en/pricing, checked 26 September 2026
- Mixdesk: mixdesk.com/pricing, checked 3 October 2026
- VoiceFleet: voicefleet.ai/pricing, checked 3 October 2026
- Cresta: cresta.com/llm-info, checked 13 September 2026
- Sierra: sierra.ai/product, checked 26 September 2026
- AiZipZap: aizipzap.com/terms, checked 19 October 2026
- Fin: fin.ai/pricing, checked 24 October 2026
- Auto-Respond: auto-respond.com/docs/pricing, checked 11 September 2026
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