AICentralResources
AI Tool Comparison

Comparing as AI Agent & Orchestration Frameworks
Devin vs Retell AI

Compare features, pricing, pros & cons, and user ratings to decide which AI tool is best for your needs.

Devin

Devin

VS
Retell AI

Retell AI

Verdict by Category

AI content generation failed. Refresh the page to try again.
View Devin View Retell AI

Detailed Comparison

Feature
Devin
Retell AI
Pricing
FreemiumDevin's Free plan costs $0/month with a light quota to code with agents, limited model availability, and unlimited inline edits and Tab completions. Pro costs $20/month and adds increased quotas, access to OpenAI, Claude, and Gemini frontier models, free use of SWE 1.7 and leading open-source models, Devin Cloud access, and the ability to purchase extra usage at API pricing. Max costs $200/month with everything in Pro plus significantly higher usage quotas for power users. Teams costs $80/month as a base team fee plus $40/month per full developer seat, and includes unlimited team members via flex seats, sharing and collaboration, centralized billing, an admin dashboard with analytics, and priority support. Enterprise is custom-priced ("let's talk") and adds highest-priority support, dedicated account management, SAML/OIDC SSO, centralized enterprise admin controls, and dedicated VPC deployment options. Usage allowances refresh daily and weekly, and extra usage beyond included quotas is billed at API pricing.
FreemiumRetell AI's Pay-as-you-go plan starts at $0 with $10 in free credits, no commitments, and full platform access. AI Voice Agents cost $0.07-$0.31 per minute depending on the LLM and voice provider selected, with a base cost breakdown of $0.055/min for Retell's voice infrastructure, $0.015-$0.040/min for text-to-speech (ElevenLabs is priciest at $0.040/min), and LLM costs ranging from $0.003/min (GPT 5 nano) to $0.16/min (GPT 5.5). AI Chat Agents start at $0.002+ per message. The plan includes 20 free concurrent calls, with additional concurrency at $8/month each; the first 10 knowledge bases are free, then $8/month each; phone numbers cost $2/month and verified numbers have a one-time $10 fee. Add-ons include Knowledge Base (+$0.005/min), Batch Call (+$0.005/dial), Branded Call ID (+$0.10/outbound call), Advanced Denoising and Safety Guardrails (+$0.005/min each), PII Removal (+$0.01/min), and AI Quality Assurance ($0.10/min after 100 free minutes). The Enterprise plan offers custom pricing with dedicated stable servers, custom SSO, role-based access control, custom MSA/DPA/BAA terms, high concurrent call caps, and 24/7 support with a dedicated portal.
Categories
AI Coding Assistants
AI No-Code / Automation ToolsAI Developer APIs & Platforms
Summary
Autonomous AI software engineer that plans, codes, and ships end-to-end
Build human-like AI voice agents for phone calls with ~600ms latency
Devin

Devin Pros & Cons

Pros

  • Handles full engineering workflows end-to-end, not just inline suggestions
  • Fleet-based parallel agents can tackle large-scale migrations across many repos
  • Deep integrations with GitHub, Linear, Jira, Slack, and Teams for real dev workflows
  • Free tier available to try core agent capabilities with no cost
  • Documented enterprise results, including major efficiency and cost gains at Nubank
  • VPC deployment and SSO support enterprise security requirements

Cons

  • Early benchmark and demo claims were criticized as overstated, so results should be evaluated against a team's own workflows
  • Best suited to well-scoped, reviewable tasks rather than fully unsupervised production work
  • Usage-based cost can climb quickly for teams running many parallel sessions
  • Full model availability and cloud agents require the $20/month Pro plan or higher
  • Quality of output still requires human review, especially on complex or ambiguous tasks
Retell AI

Retell AI Pros & Cons

Pros

  • Industry-leading ~600ms latency for natural, fluid conversations
  • True pay-as-you-go billing with no annual contracts required to start
  • Highly configurable flow builder with real-time function calling
  • Broad LLM and TTS provider choice, including Claude, GPT, and Gemini models
  • SOC 2, HIPAA, and GDPR compliant out of the box
  • Simulation testing and detailed call analytics for continuous quality improvement

Cons

  • Billing continues during silence and hold time since speech recognition stays active
  • Advanced voices like Elevenlabs cost more per minute than platform-native voices
  • Enterprise-grade features like SSO and custom BAAs require the custom-priced Enterprise plan
  • Costs can add up quickly at scale when combining premium LLMs, TTS, and add-ons like AI QA
  • No native mobile app; management happens through the web dashboard