# Callr vs Speko

Callr records 2,657 monthly visits with -45.2% month-over-month growth and Free Trial, Paid pricing. Speko records 20,954 monthly visits with -7.9% growth and Paid, Contact for Pricing pricing.

| Metric | [Callr](https://openaitools.app/tool/callr) | [Speko](https://openaitools.app/tool/speko) |
| :--- | :--- | :--- |
| Website URL | https://callr.com | https://speko.ai |
| Categories | AI API, AI Transcriber, AI Data Mining, AI CRM | AI API, AI Speech-to-Text, AI Text-to-Speech, AI Agent |
| Pricing Model | Free Trial, Paid | Paid, Contact for Pricing |
| Monthly Visits | 2,657 | 20,954 |
| MoM Growth Rate | -45.2% | -7.9% |
| Primary Market | India | United States |
| Direct Visits | 1,035 | 5,932 |
| Review Score | 4.2 | 4.4 |
| Saved Count | 0 | 0 |
| Supported Platforms | Website | Website |

## Callr

Callr is built around a simple premise: if a business owns the network its calls travel on, it can expose communication as a clean API and capture the data that normally disappears inside a phone bill. Teams use a documented REST API, webhooks and a low-code flow builder to embed click-to-call, SMS notifications, IVR menus and AI voice agents directly into their own products — no telecom expertise or hardware required, because the platform runs serverless on infrastructure Callr operates itself.

The differentiator is what happens after the call connects. Every conversation can be transcribed, summarized and enriched with sentiment, intent, satisfaction and campaign attribution, then pushed automatically into Salesforce, HubSpot, Google Analytics, Google Ads or a BI stack. Because the AI layer is model-agnostic, customers can plug in GPT, Claude, Mistral, Llama or their own in-house LLM and define the extraction prompts themselves.

A second mode covers calls nobody picks up: AI voice agents built in the low-code flow designer answer after hours or on overflow, qualify callers, book appointments and hand off to a human with full context. According to the company, the platform handles around 2.5 million calls a day for more than 300 businesses across marketplaces, real estate, automotive and agencies, with per-interaction economics published as roughly €0.012 per voice interaction.

**Pricing & Plans:** Free trial available; paid usage-based plans. The site lists the option to get started for free and a pricing page; per-interaction figures published by the vendor are around €0.012 for voice, €0.040 for SMS and €0.001 for email. Enterprise/white-label pricing is quoted on request.

- **Programmable voice and SMS API:** REST API, webhooks and serverless flows for inbound and outbound voice, SMS, email and IVR across 220+ countries on Callr's own carrier network.
- **Conversation intelligence:** Automatic transcripts, AI summaries, sentiment, intent, satisfaction scoring and campaign attribution generated from each call with prompts you control.
- **AI voice agents:** Low-code flow builder for agents that answer, qualify, book and resolve calls end to end, escalating to a human when it matters.
- **Bring your own model:** Connect GPT, Claude, Mistral, Llama or a private in-house model so extraction logic and data residency stay under your control.
- **Native CRM, BI and ad integrations:** Connectors for Salesforce, HubSpot, Google Analytics and Google Ads plus webhooks so call data lands in the tools you already run.

**Strengths:** Owns its carrier network, which keeps pricing and quality under direct control; Genuinely API-first with thorough documentation, webhooks and a low-code flow designer; Combines raw telephony with AI transcription, sentiment, intent and attribution in one platform; Model-agnostic AI layer lets teams choose their own LLM or self-hosted stack

**Limitations:** Credit-based, usage-priced model makes spend harder to predict without careful volume modeling; Most powerful features assume developer resources and engineering time; Per-interaction rates are published in euros and can vary by destination and volume

[Profile (Markdown)](https://openaitools.app/tool/callr.md)

## Speko

The core idea is that no single speech model wins everywhere. Speko's benchmark shows six different models taking the top spot across 18 languages, and notes that a large share of models are only ever measured in English, leaving their ranking in other languages unknown. Instead of committing to one vendor, Speko routes each stage of a voice pipeline — STT, LLM and TTS — to whichever model performs best for the language your users actually speak, with measured selection and failover before the response starts.

Two commercial shapes are offered. On Speko infrastructure you pay a single bundled rate of $0.09 per minute covering all three legs. Alternatively, managed routing adds 5% on top of a provider's published rate and lets you use your own provider keys, in which case the provider bills you directly. The router is hosted at router.speko.dev with typed contracts and public OpenAPI and AsyncAPI documentation.

The platform layer targets teams that need working phone agents, not just model access. You can map a call step by step, connect calendars, CRMs, your own APIs and documentation into any step, buy a phone number, test drafts against simulated callers including adversarial ones, and score every live call against checks you write in plain language. Native integrations exist for LiveKit and Pipecat, and an MCP server exposes Speko to Claude, ChatGPT, Grok, Cursor and Claude Code. Speko states it is backed by Y Combinator and that new accounts receive $10 in credit.

**Pricing & Plans:** Two models. On Speko infrastructure, a flat $0.09 per minute bundles STT, LLM and TTS; calls bill from answer to hang-up and unanswered calls cost nothing. With managed routing, you pay the selected provider's published rate plus 5%. $10 in signup credit applies to every account. Phone numbers cost $1 setup and $2 per month for most numbers, and calls on Speko numbers add the carrier charge plus 20%.

- **Language-aware model routing:** STT, LLM and TTS are selected per language based on an independent benchmark covering 89 models across 18 languages, with pre-response failover.
- **Voice agent platform:** Design a call step by step, plug calendars, CRMs, your APIs and docs into any step, then run it with inbound, outbound and call-list support.
- **Simulated caller testing:** Draft agents are tested against simulated callers, including red-team scenarios that try to break the flow, before they go live.
- **Plain-language call scoring:** Every live call is scored against checks you write in everyday language, for example reading back a date or never quoting a price.
- **Framework and MCP integrations:** Native Gateway services for LiveKit and Pipecat, plus an MCP server for Claude, ChatGPT, Grok, Cursor and Claude Code.

**Strengths:** Independent, language-by-language benchmark rather than a single accuracy claim; Provider-neutral routing with the option to bring your own keys; Clear, simple pricing: $0.09 per minute bundled or 5% on routed provider spend; Agent platform includes phone numbers, evaluation and live call monitoring

**Limitations:** Public preview with no SLA and email-only support outside enterprise; The benchmark and model catalogue move quickly, so routing decisions need periodic review; Telephony costs sit on top of the per-minute rate, and international routes can exceed the US minimum

[Profile (Markdown)](https://openaitools.app/tool/speko.md)

## Frequently Asked Questions

### How do Callr and Speko compare in monthly traffic?

Callr has 2,657 monthly visits, while Speko has 20,954. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Callr has a month-over-month growth rate of -45.2%; Speko has -7.9%.

### How does pricing compare?

Callr: Free Trial, Paid. Free trial available; paid usage-based plans. The site lists the option to get started for free and a pricing page; per-interaction figures published by the vendor are around €0.012 for voice, €0.040 for SMS and €0.001 for email. Enterprise/white-label pricing is quoted on request. Speko: Paid, Contact for Pricing. Two models. On Speko infrastructure, a flat $0.09 per minute bundles STT, LLM and TTS; calls bill from answer to hang-up and unanswered calls cost nothing. With managed routing, you pay the selected provider's published rate plus 5%. $10 in signup credit applies to every account. Phone numbers cost $1 setup and $2 per month for most numbers, and calls on Speko numbers add the carrier charge plus 20%.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [OpenAI Platform](https://openaitools.app/tool/openai) | 234,678,639 | -9.6% | Paid | Enterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents. | [.md](https://openaitools.app/tool/openai.md) |
| 2 | [ElevenLabs](https://openaitools.app/tool/elevenlabs-io) | 42,396,771 | +26.1% | Freemium, Paid, Contact for Pricing | AI audio platform for speech, agents, music and dubbing | [.md](https://openaitools.app/tool/elevenlabs-io.md) |
| 3 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | [.md](https://openaitools.app/tool/openrouter-ai.md) |
| 4 | [Cartesia](https://openaitools.app/tool/cartesia-ai) | 1,782,707 | +49.7% | Contact for Pricing | Real-time voice AI models and agents you can build on | [.md](https://openaitools.app/tool/cartesia-ai.md) |
| 5 | [Deepgram Voice AI](https://openaitools.app/tool/deepgram-voice-ai) | 863,852 | +31.8% | Free Trial | Real-time speech-to-text, text-to-speech and voice agents in one API platform | [.md](https://openaitools.app/tool/deepgram-voice-ai.md) |
| 6 | [Xiaomi MiMo](https://openaitools.app/tool/xiaomi-mimo) | 823,818 | -39.9% | Contact for Pricing | Xiaomi's multimodal model family for reasoning, vision and voice | [.md](https://openaitools.app/tool/xiaomi-mimo.md) |
| 7 | [JustCall](https://openaitools.app/tool/justcall) | 780,285 | +11.8% | Paid | AI communication platform for sales and support teams | [.md](https://openaitools.app/tool/justcall.md) |
| 8 | [Vapi](https://openaitools.app/tool/vapi) | 662,301 | -11.4% | Freemium | Build, test, and deploy production-grade voice AI agents over API | [.md](https://openaitools.app/tool/vapi.md) |
| 9 | [AssemblyAI](https://openaitools.app/tool/assemblyai) | 453,591 | -6.9% | Freemium, Contact for Pricing | Speech-to-text and voice intelligence APIs for developers | [.md](https://openaitools.app/tool/assemblyai.md) |
| 10 | [Treg](https://openaitools.app/tool/treg) | 452,935 | +223.4% | Freemium | One key for 4,100+ agent tools, pay per call | [.md](https://openaitools.app/tool/treg.md) |

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Source: https://openaitools.app/compare/callr-vs-speko

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)