Fixie vs Retell AI: 2026 comparison
Build durable agents that act on your internal data — open framework.
Fixie vs Retell AI — specs
| Spec | Fixie | Retell AI |
|---|---|---|
| Agent Rank | 72 / 100 (A) | 72 / 100 (A) |
| Autonomy | Semi-autonomous | Autonomous |
| Pricing | Free · OSS | Pay per task · Free tier |
| Open source | Yes | No |
| Capabilities | Tool use, RAG, Memory, Multi-agent | Voice, Tool use, Memory |
| Integrations | 3 apps | 3 apps |
| Verified | — | Verified |
| Released | Feb 2025 | Mar 2025 |
Agent Rank breakdown
- Autonomy fit
- 8
- Capabilities
- 8
- Integrations
- 6
- Pricing value
- 10
- Polish & maturity
- 5
- Verifiability
- 6
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
- Autonomy fit
- 9
- Capabilities
- 6
- Integrations
- 4
- Pricing value
- 9
- Polish & maturity
- 5
- Verifiability
- 10
Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?
Pros & cons
- +Real multi-agent primitives — planner + workers + reviewer out of the box
- +Strong for internal-tool agents over your own data
- +Permissive license; auditable end-to-end
- −Framework, not a finished product — engineering effort to ship anything
- −Smaller community than LangChain / LlamaIndex
- −Cloud pricing not yet published — usage-based and opaque
- +Lowest per-minute pricing among production voice agent platforms
- +Strong streaming latency (~300ms) competitive with ElevenLabs
- +Per-minute pricing easier to forecast than per-seat
- −Less polished out-of-the-box than Synthflow for non-technical buyers
- −Documentation and tooling still maturing vs ElevenLabs
- −Voice quality varies by model selection
Pricing
- +Apache-2.0 framework
- +Self-host
- +Bring your own models + data
- +Hosted runtime
- +Multi-agent orchestration
- +Observability
- +~$0.07/min
- +Production-ready API
- +Volume discounts
- +Dedicated infrastructure
- +Custom models
Which one should you pick?
Pick Fixie if cost is the main constraint or if auditability or self-hosting matters.
Try Fixie →Pick Retell AI if you want the highest autonomy and the verification loop is in place or if you want a vendor we've verified for accessibility and pricing accuracy.
Try Retell AI →Affiliate links. We may earn a commission at no extra cost to you.
Frequently asked
Should I pick Fixie or Retell AI in 2026?+
Pick Fixie if cost is the main constraint or if auditability or self-hosting matters. Pick Retell AI if you want the highest autonomy and the verification loop is in place or if you want a vendor we've verified for accessibility and pricing accuracy. Most working teams running both can use Fixie for primary work and Retell AI for the workflows where its specific strengths matter.
What's the price difference between Fixie and Retell AI?+
Fixie starts at Free · OSS; Retell AI starts at Pay per task · Free tier. Fixie is the cheaper entry option. For team deployments the TCO can differ — use the AI Agent Rank TCO calculator for your specific volume.
Which is more autonomous, Fixie or Retell AI?+
Retell AI is the more autonomous of the two (Autonomous vs Semi-autonomous). Higher autonomy ships throughput faster but requires verification loops in place — see our autonomous-vs-copilot framing for when each tier wins.