Stella vs Woebot
Voice AI vs Text CBT Chatbot
Woebot is a research-backed CBT chatbot (text-only). Stella is a voice-first AI companion. Both help with anxiety—here's how to choose.
Stella
Voice-first conversations that remember your patterns. Talk naturally—Stella listens, responds, and adapts to what works for you.
Woebot
Text-based CBT chatbot with structured exercises. Research-backed (Stanford), guided modules for mood tracking and coping skills.
The Key Difference
Woebot is structured CBT exercises delivered through text chat. It follows a script based on your mood inputs—great for learning coping techniques.
Stella is conversational AI you can actually talk to out loud. She remembers your triggers, patterns, and what helped before—adapts to your specific situation.
"Woebot asks multiple choice questions. Stella lets me just... talk."
See why Woebot users switched to Stella
Get Early AccessWhen Each Works Best
"I want to talk through my anxiety, not type it out"
→ Stella
Talk out loud. Stella listens and responds with voice. Natural conversation like texting a friend, but you can speak.
→ Woebot
Text-only interface. You type responses to prompts and multiple-choice questions.
"I have access through my employer/school"
→ Stella
$9.99/month paid directly. No employer integration yet.
→ Woebot
Free if your employer/school provides access codes. Can't beat free.
"I want structured CBT exercises to practice"
→ Stella
Evidence-informed techniques, but conversational—not structured modules.
→ Woebot
Built on Stanford research. Structured CBT programs with guided exercises and mood tracking.
"I need something that remembers my patterns"
→ Stella
Remembers your triggers, what helped before, and patterns across sessions. Deep personalization.
→ Woebot
Basic mood tracking. Limited continuity between sessions—more like starting fresh each time.
"I'm dealing with deeper depression, not just daily anxiety"
→ Stella
Natural conversation adapts to wherever you're at. Reddit users note Woebot "struggles with deep depression."
→ Woebot
Designed for general anxiety/mood support. Users report it feels scripted for deeper issues.
Feature-by-Feature Comparison
The Honest Take
Woebot is free if you have access—hard to beat. If your employer or school provides it, start there. It's research-backed and teaches solid CBT techniques.
But it's text-only and scripted. Reddit research shows users say Woebot "struggles with deep depression" and feels like filling out a form.
Stella fills a different gap: You can actually TALK (not type), she remembers your patterns across sessions, and the conversation adapts to you—not a script.
If you want structured CBT exercises and have free access → Woebot.
If you want to talk out loud to a companion that remembers you → Stella.