AI-ASSISTANTS
Gemini enters enterprise cybersecurity with specialized models and a government defense program
Alternatives · AI assistants
Retell AI alternatives
The best Retell AI alternatives in AI assistants, ranked by Sparkpulse's velocity_score.
Updated Sep 16, 2026
Looking for the best alternatives to Retell AI? Sparkpulse tracks and ranks 12 alternatives in AI assistants by shipping velocity — how frequently each ships meaningful updates, verified from official changelogs. For reference, Retell AI shipped 0 meaningful updates in the last 30 days and carries a velocity score of 0.0 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About Retell AI
Voice-AI platform building toward composable, flexibly-routed agents
Retell builds voice AI agents, and the captured releases (through early 2026) center on making complex agents maintainable and adaptive: Agent Transfer for handing context between modular agents, Flex Mode for non-linear flow navigation, reusable Flow Components, and node-level knowledge bases. Add to that a chat widget, an AI QA Analyst, and periodic pricing adjustments.
Velocity 0.0 · Last update 2mo ago
Top 12 alternatives to Retell AI
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
AI-ASSISTANTS
GitHub Copilot builds out enterprise governance for its expanding agent operations surface.
AI-ASSISTANTS
OpenRouter launches US in-region data routing, completing its compliance story for regulated industries.
AI-ASSISTANTS
DocsBot adds a knowledge-gap explorer and phone voice channel, closing two persistent operator blind spots.
AI-ASSISTANTS
Claude layers Salesforce skills and Fable 5.1 onto an accelerating enterprise platform push.
AI-ASSISTANTS
Dosu publishes a content series on agent memory architecture while the product feed shows no feature announcements.
AI-ASSISTANTS
Baseten CLI 1.0.0 ships a stable command contract as regional deployments unlock enterprise compliance use cases.
AI-ASSISTANTS
Ollama integrates with ChatGPT Desktop as a local backend while the v0.34.x RC cycle hardens OpenAI API compatibility.
AI-ASSISTANTS
InvokeAI 6.14 adds video generation via Wan 2.2 and native multi-GPU support.
AI-ASSISTANTS
vLLM in a six-RC sprint to stabilize v0.29.0 with Mamba and hybrid prefix caching
AI-ASSISTANTS
Character.AI is becoming an interactive entertainment studio, absorbing comics and original series into its Character ecosystem.
AI-ASSISTANTS
LibreChat v0.8.8 ships agent interruption and mid-run approval gates — agentic AI with human checkpoints.
Retell AI vs alternatives — shipping velocity at a glance
Velocity score (0–10) and meaningful releases shipped in the last 30 days, from official changelogs. Higher = shipping faster.
| Product | Velocity | Sparks · 30d | Focus areas | Latest release |
|---|---|---|---|---|
| Retell AI (baseline) | 0.0 | 0 | voice-aiconversation-flowsagent-composition | Flex Mode for Conversation Flows |
| Gemini | 10.0 | 0 | ai-modelscybersecurityagentic-ai | — |
| GitHub Copilot | 8.8 | 0 | enterprise-aimodel-selectioncode-review | — |
| OpenRouter | 8.8 | 1 | model-routingdata-residencyagentic-tooling | In-Region Routing: Keep your data in the US or EU |
| DocsBot AI | 7.5 | 2 | ai-supportknowledge-gapsvoice-agents | Data Explorer: See What Your Bot Is Missing |
| Claude | 7.5 | 2 | enterpriseagenticmodel-releases | Salesforce in Claude: 37 pre-built sales skills in beta |
| Dosu | 7.5 | 0 | ai-agentsdeveloper-toolsagent-memory | — |
| Baseten | 6.3 | 1 | ml-inferenceenterprise-compliancecli-stability | Baseten CLI 1.0.0 |
| Ollama | 6.3 | 0 | local-llmopenai-compatchatgpt-desktop | — |
| InvokeAI | 6.3 | 1 | generative-aivideo-generationlocal-inference | InvokeAI 6.14.0 |
| vLLM | 6.3 | 0 | llm-inferenceprefix-cachingmoe-models | — |
| Character.AI | 6.3 | 1 | interactive-entertainmentcontent-studiocreator-tools | (c.ai) Comics and the Interactive Future of Fandom |
| LibreChat | 6.3 | 1 | agentic-workflowshuman-in-the-loopagent-interruption | v0.8.8-rc2 |
The 12 best Retell AI alternatives, in depth
1. Gemini · velocity 10.0
Gemini enters enterprise cybersecurity with specialized models and a government defense program.
Its velocity score of 10.0/10 reflects longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Gemini focuses on ai models, cybersecurity and agentic ai.
Gemini and Retell AI have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
2. GitHub Copilot · velocity 8.8
GitHub Copilot builds out enterprise governance for its expanding agent operations surface.
Its velocity score of 8.8/10 reflects longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, GitHub Copilot focuses on enterprise ai, model selection and code review.
GitHub Copilot and Retell AI have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
Full GitHub Copilot trajectory → · Compare Retell AI vs GitHub Copilot →
3. OpenRouter · velocity 8.8
OpenRouter launches US in-region data routing, completing its compliance story for regulated industries.
Over the last 30 days OpenRouter shipped 1 meaningful update vs Retell AI's 0, most recently “In-Region Routing: Keep your data in the US or EU”. Its velocity score of 8.8/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, OpenRouter focuses on model routing, data residency and agentic tooling.
Over the last 30 days OpenRouter has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
Full OpenRouter trajectory → · Compare Retell AI vs OpenRouter →
4. DocsBot AI · velocity 7.5
DocsBot adds a knowledge-gap explorer and phone voice channel, closing two persistent operator blind spots.
Over the last 30 days DocsBot AI shipped 2 meaningful updates vs Retell AI's 0, most recently “Data Explorer: See What Your Bot Is Missing”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, DocsBot AI focuses on ai support, knowledge gaps and voice agents.
Over the last 30 days DocsBot AI has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
Full DocsBot AI trajectory → · Compare Retell AI vs DocsBot AI →
5. Claude · velocity 7.5
Claude layers Salesforce skills and Fable 5.1 onto an accelerating enterprise platform push.
Over the last 30 days Claude shipped 2 meaningful updates vs Retell AI's 0, most recently “Salesforce in Claude: 37 pre-built sales skills in beta”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Claude focuses on enterprise, agentic and model releases.
Over the last 30 days Claude has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
6. Dosu · velocity 7.5
Dosu publishes a content series on agent memory architecture while the product feed shows no feature announcements.
Its velocity score of 7.5/10 reflects longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Dosu focuses on ai agents, developer tools and agent memory.
Dosu and Retell AI have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
7. Baseten · velocity 6.3
Baseten CLI 1.0.0 ships a stable command contract as regional deployments unlock enterprise compliance use cases.
Over the last 30 days Baseten shipped 1 meaningful update vs Retell AI's 0, most recently “Baseten CLI 1.0.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Baseten focuses on ml inference, enterprise compliance and cli stability.
Over the last 30 days Baseten has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
8. Ollama · velocity 6.3
Ollama integrates with ChatGPT Desktop as a local backend while the v0.34.x RC cycle hardens OpenAI API compatibility.
Its velocity score of 6.3/10 reflects longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Ollama focuses on local llm, openai compat and chatgpt desktop.
Ollama and Retell AI have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
9. InvokeAI · velocity 6.3
InvokeAI 6.14 adds video generation via Wan 2.2 and native multi-GPU support.
Over the last 30 days InvokeAI shipped 1 meaningful update vs Retell AI's 0, most recently “InvokeAI 6.14.0”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, InvokeAI focuses on generative ai, video generation and local inference.
Over the last 30 days InvokeAI has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
Full InvokeAI trajectory → · Compare Retell AI vs InvokeAI →
10. vLLM · velocity 6.3
VLLM in a six-RC sprint to stabilize v0.29.0 with Mamba and hybrid prefix caching.
Its velocity score of 6.3/10 reflects longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, vLLM focuses on llm inference, prefix caching and moe models.
vLLM and Retell AI have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
11. Character.AI · velocity 6.3
Character.AI is becoming an interactive entertainment studio, absorbing comics and original series into its Character ecosystem.
Over the last 30 days Character.AI shipped 1 meaningful update vs Retell AI's 0, most recently “(c.ai) Comics and the Interactive Future of Fandom”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, Character.AI focuses on interactive entertainment, content studio and creator tools.
Over the last 30 days Character.AI has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
Full Character.AI trajectory → · Compare Retell AI vs Character.AI →
12. LibreChat · velocity 6.3
LibreChat v0.8.8 ships agent interruption and mid-run approval gates — agentic AI with human checkpoints.
Over the last 30 days LibreChat shipped 1 meaningful update vs Retell AI's 0, most recently “v0.8.8-rc2”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Retell AI leans on voice ai, conversation flows and agent composition, LibreChat focuses on agentic workflows, human in the loop and agent interruption.
Over the last 30 days LibreChat has been shipping faster than Retell AI — a point in its favour if release momentum matters to you.
Full LibreChat trajectory → · Compare Retell AI vs LibreChat →
Frequently asked questions
What are the best alternatives to Retell AI?
The top Retell AI alternatives we currently track in AI assistants are Gemini, GitHub Copilot, OpenRouter, DocsBot AI, Claude, ranked by recent ship velocity.
How is this list of Retell AI alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare Retell AI directly with one of these alternatives?
Yes — every card has a "Compare with Retell AI" link to a side-by-side /compare page.