# Sierra vs Thoughtly

**Leader by vioscaleAI score:** Thoughtly

| Attribute | Sierra | Thoughtly |
|---|---|---|
| **vioscaleAI score** | 55.3 (44% (low)) | 65.4 (72% (medium)) |
| content.faq | `[{"answer":"A platform for building and deploying AI agents across chat, voice, email, SMS, WhatsApp, and ChatGPT. Includes a no-code agent builder, conversation analytics, and automated agent optimization capabilities with enterprise-grade security and compliance. It is indexed under Voice AI Agents.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"What is Sierra?","confidence":0.6},{"answer":"Sierra does not publish its prices. Pricing is quoted on request, so the figure depends on your seat count and requirements. We record this as a pricing-transparency signal rather than guessing a number. Pricing changes often, so verify at source before relying on it.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"How much does Sierra cost?","confidence":0.6},{"answer":"We have confirmed browser-based access to Sierra. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"What platforms does Sierra support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Sierra, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"Can Sierra be self-hosted?","confidence":0.6},{"answer":"We have confirmed 5 integrations for Sierra, including ChatGPT, Voice, Email, SMS and WhatsApp. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"What does Sierra integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Sierra. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Sierra not holding them. Always confirm compliance directly before you rely on it.","source":"https://sierra.ai/fr/product/trust-and-reliability","question":"What security certifications does Sierra have?","confidence":0.7},{"answer":"Sierra is available worldwide. Its primary market is the United States. The vendor is headquartered in the United States.","source":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","question":"Where is Sierra available?","confidence":0.75}]` | `[{"answer":"A SaaS platform that uses AI voice agents to call and engage leads, automatically follow up via SMS and email, and integrate with existing CRM and business tools. The system handles initial outreach, qualification, and routing while syncing results back to the customer's systems. It is indexed under Voice AI Agents.","source":"https://thoughtly.com/pricing","question":"What is Thoughtly?","confidence":0.6},{"answer":"Thoughtly is a paid product; published pricing starts at $500 per month. It is sold across 3 plans (Flex, Scale and Enterprise). There is no free tier. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://thoughtly.com/pricing","question":"How much does Thoughtly cost?","confidence":0.6},{"answer":"Thoughtly supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://thoughtly.com/pricing","question":"What platforms does Thoughtly support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Thoughtly, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://thoughtly.com/pricing","question":"Can Thoughtly be self-hosted?","confidence":0.6},{"answer":"We have confirmed 24 integrations for Thoughtly, including Salesforce, HubSpot, Zoho CRM, Pipedrive, Keap, GoHighLevel, Attio and Calendly, plus 16 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://thoughtly.com/pricing","question":"What does Thoughtly integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Thoughtly. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Thoughtly not holding them. Always confirm compliance directly before you rely on it.","source":"https://thoughtly.com/company/security","question":"What security certifications does Thoughtly have?","confidence":0.7},{"answer":"Thoughtly is available worldwide. Its primary markets are the United States and the EU.","source":"https://thoughtly.com/pricing","question":"Where is Thoughtly available?","confidence":0.75}]` |
| deployment.options | `{"cloud":true}` | `{"cloud":true}` |
| description.long | Sierra enables businesses to create and deploy conversational AI agents across voice, chat, email, SMS, and other channels. The platform uses an outcome-based pricing model where customers pay based on business results delivered rather than traditional fixed fees. | A SaaS platform using AI agents to automatically follow up with existing leads through voice, SMS, and email — particularly after missed calls or as part of multi-touch campaigns — with built-in compliance for telecommunications regulations. |
| features.capabilities | `{"deployment_model":"no_code_saas_platform","post_call_transcription_and_crm_sync":true,"live_human_handoff_and_call_transfer_logic":true,"hipaa_compliance_for_medical_appointment_setting":true}` | `{"soc2_type_ii":true,"pricing_model":"flat_monthly","deployment_model":"no_code_saas_platform","post_call_transcription_and_crm_sync":true,"dynamic_mid_call_api_function_execution":true,"emotion_prosody_and_custom_voice_cloning":true,"outbound_dialing_and_campaign_management":true,"live_human_handoff_and_call_transfer_logic":true,"inbound_reception_and_ivr_routing_replacement":true,"voicemail_detection_and_answering_machine_drops":false,"hipaa_compliance_for_medical_appointment_setting":true,"twilio_vonage_bring_your_own_carrier_byoc_support":true,"sub_second_latency_and_interruption_barget_in_handling":true}` |
| integrations.count | 6 | 200 |
| integrations.list | `[{"name":"ChatGPT"},{"name":"Chat"},{"name":"Voice"},{"name":"Email"},{"name":"SMS"},{"name":"WhatsApp"}]` | `[{"name":"Salesforce"},{"name":"HubSpot"},{"name":"Zoho CRM"},{"name":"Pipedrive"},{"name":"Keap"},{"name":"GoHighLevel"},{"name":"Attio"},{"name":"Calendly"},{"name":"Zoom"},{"name":"Google Sheets"},{"name":"Airtable"},{"name":"Slack"},{"name":"Gmail"},{"name":"Zapier"},{"name":"Make"},{"name":"Zendesk"},{"name":"Shopify"},{"name":"Acuity Scheduling"},{"name":"Cal.com"},{"name":"Mindbody"},{"name":"Zoho Bookings"},{"name":"Typeform"},{"name":"Trello"},{"name":"Smartsheet"},{"name":"ElevenLabs","native":true,"category":"voice","direction":"bidirectional"}]` |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"summary":"Outcome-based pricing model (specific tiers not publicly documented)","sourceUrl":"https://sierra.ai/resources/podcasts/bret-taylor-of-sierra-on-ai-agents-outcome-based-pricing-and-the-openai-board","retrievedAt":"2026-09-22T13:51:11.002Z"}` | `{"type":"subscription","plans":[{"free":false,"name":"Flex","summary":"$500/month. Unlimited channels and minutes.","features":["Voice, SMS, email, workflows","Unlimited usage across channels","200+ integrations + REST API","Two-way CRM sync (HubSpot, Salesforce, Zoho)","34+ languages, voice cloning","Email support + Expert Sessions"],"components":[{"kind":"fixed","amount":500,"period":"month","currency":"USD"}],"description":"For teams getting inbound conversion off the ground.","contactSales":false,"includedLimits":{"integrations":"200+","sms_per_month":"Unlimited","voice_minutes":"Unlimited","concurrent_calls":"10"}},{"free":false,"name":"Scale","summary":"Tailored pricing. Enterprise-grade support and compliance.","features":["Everything in Flex","100+ concurrent calls","Auto-QA + evals on every conversation","SOC 2 Type II reports + TCPA review","Dedicated CSM, Slack support, extended hours","99.9% uptime SLA + white-glove onboarding"],"description":"For teams running production inbound across multiple channels.","contactSales":true,"includedLimits":{"voice_minutes":"Unlimited","concurrent_calls":"100"}},{"free":false,"name":"Enterprise","summary":"Custom pricing. Full compliance and infrastructure control.","features":["Everything in Scale","Custom LLM (bring your own model)","HIPAA + BAA, PCI scope review","Dedicated infrastructure + data residency","SSO, SCIM, advanced RBAC","Phone hotline + 24/7 named TAM","Custom integrations + private APIs"],"description":"For regulated verticals and high-volume operations (1M+ minutes/month).","contactSales":true}],"summary":"From $500/month. Usage-based billing above plan limits. No per-channel or per-seat fees.","currency":"USD","freeTier":false,"sourceUrl":"https://thoughtly.com/pricing","retrievedAt":"2026-08-21T11:06:14.044Z","startingPrice":{"amount":500,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | - | no |
| pricing.model | commercial | commercial |
| pricing.price_level | unknown | high |
| pricing.starting_price | - | `{"amount":500,"currency":"USD"}` |
| pricing.transparent | no | yes |
| reliability.sla_pct | - | 99.9 |
| security.certifications | `[{"name":"PCI-DSS Level 1","level":"Level 1","status":"active"},{"name":"ISO 27001","status":"active"},{"name":"ISO 42001","status":"active"}]` | - |
| security.disclosure_policy | - | yes |
| security.fedramp | yes | - |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | - |
| security.pci | yes | yes |
| security.soc2 | yes | yes |
| security.trust_center | https://sierra.ai/de/product/trust-and-reliability | https://thoughtly.com/blog/sms-a2p-10dlc-compliance-ai-follow-up |

## Capabilities (Voice AI Agents)

| Capability | Sierra | Thoughtly |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Deployment model | No code saas platform | No code saas platform |
| Sub second latency and interruption barget in handling | - | ✓ |
| Dynamic mid call API function execution | - | ✓ |
| Live human handoff and call transfer logic | ✓ | ✓ |
| Emotion prosody and custom voice cloning | - | ✓ |
| Inbound reception and ivr routing replacement | - | ✓ |
| Outbound dialing and campaign management | - | ✓ |
| Post call transcription and CRM sync | ✓ | ✓ |
| Voicemail detection and answering machine drops | - | ✗ |
| Twilio vonage bring your own carrier byoc support | - | ✓ |
| SOC2 type ii | - | ✓ |
| HIPAA compliance for medical appointment setting | ✓ | ✓ |
| Pricing model | - | Flat monthly |

*Source: vioscaleAI. Generated 2026-10-16T19:29:11.910Z. "-" = undocumented, not absent.*