Crucible — the founder's AI thinking partner that pushes back

From a raw idea to investor-ready. Crucible's Inventor mode turns a rough idea into a full Founder Workspace — Business Model Canvas, Lean Canvas, Customer Development plan, Porter's Five Forces, PESTLE, SWOT, a full Business Plan, an Investor Pitch Deck and an Investor Critique — all exportable as PDFs. Then Critic, Mentor and Research stress-test the plan before any investor does.

It is also a general-purpose AI thinking partner: nine specialist voices engineered to challenge your thinking, not validate it, with memory that carries across every mode — what you tell Inventor, Friend remembers.

Discover who you are first

Crucible starts with you. A short Ikigai conversation maps your reason for being across what you love, what you're good at, what the world needs and what you can be paid for. Then a guided ~10-question personality assessment names your type with an archetype label and code — for example The Strategist · INTJ — with a per-dimension breakdown. Both are free, never cost a turn, and live in Settings so you can retake them as you grow: the me I was yesterday is the me I am today because of my experience today.

The nine thinking modes

• Debate — Steel Man, Adversary and Stoic argue your idea in parallel.
• Mentor — a seasoned voice that asks the question under the question.
• Critic — honest editor; names what won't survive contact with reality (Lewin / Kotter / ADKAR critiques).
• Teacher — Socratic; draws the answer out of you instead of handing it over.
• Friend — presence-first, with persistent memory across sessions.
• Inventor — the founder's thinking partner; ships the nine-document Founder Workspace.
• Therapist — reflective conversation with crisis-language detection and country-localised referrals (not a substitute for care).
• Research — deep web investigation with every claim dated and sourced.
• Professor — PhD-grade academic coaching (Harvard / APA / MLA / Chicago / IEEE) with integrity guardrails.

Plus Prompt Smith (a utility voice for crafting prompts) and Council, where Mentor, Critic and Inventor convene around a single decision.

Pricing: Free (10 turns/mo) · Starter $5 (60/mo) · Plus $15 (180/mo) · Pro $39 (480/mo).

Open the app · Guide · Competitive benchmark · Blog · Council

Built by Sentria Ltd (United Kingdom). Hosted at mycrucible.ai.