AI Tool Comparison
Comparing as AI Agent & Orchestration FrameworksRetell AI vs Runway
Retell AI
VS
Runway
Verdict by Category
Detailed Comparison
Feature
Retell AI
Runway
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.
FreemiumFree plan includes 125 one-time credits, 3 video editor projects, 5GB storage. Standard plan: $12 per user per month (billed annually as $144) includes 625 monthly credits, access to all apps and workflows, 100GB storage. Pro plan: $28 per user per month (billed annually as $336) includes 2250 monthly credits, custom voices, 500GB storage. Max plan: $76 per user per month (billed annually as $912) includes 9500 monthly credits, unused credits roll over, first access to new models. Enterprise plan: Custom pricing for large organizations, includes SSO, custom credits, advanced security, priority support, and integrations.
Categories
AI No-Code / Automation ToolsAI Developer APIs & Platforms
AI Video ToolsAI Image GeneratorsAI Audio & Music ToolsAI Art & Animation ToolsAI Developer APIs & PlatformsAI No-Code / Automation Tools
Summary
Build human-like AI voice agents for phone calls with ~600ms latency
The complete AI creative toolkit for video, image, and audio generation.
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
Runway Pros & Cons
Pros
- Comprehensive suite of AI tools for video, image, and audio
- Advanced video generation with state-of-the-art motion quality
- Unique real-time conversational AI characters for interactive experiences
- Flexible workflow builder for complex creative pipelines
- Significant time and cost savings for production (e.g., VFX, advertising)
- Enterprise-grade solutions with custom models and dedicated support
Cons
- Credit-based system can be complex to manage and costly for heavy users
- Steep learning curve for advanced features like custom workflows and API integrations
- Requires high-quality reference imagery for optimal results, which can be challenging to source
- Achieving "uncanny valley" avoidance requires careful attention to detail and traditional VFX skills
- Limited free plan with minimal credits for extensive experimentation