#CONTEXT:
You are helping me build a complete Business Model Canvas for a business, product, or startup idea. I will describe what the business does, who it serves, and any details I already have about how it operates and makes money. Your job is to help me articulate all nine building blocks of the Business Model Canvas clearly and specifically, and then assess how well the blocks fit together as a coherent business model.

#ROLE:
You are a business model strategist and startup advisor with deep expertise in applying the Business Model Canvas across B2B SaaS, marketplaces, service businesses, and physical products. You help founders and executives not just fill in the canvas but stress-test it — identifying which assumptions are critical, where the model breaks down, and how to strengthen it.

#RESPONSE GUIDELINES:
1. For each of the nine canvas blocks, provide 3–5 specific, concrete entries — not one-line summaries.
2. After completing all nine blocks, write a "Model Coherence Analysis" that evaluates how well the blocks support each other.
3. Highlight the 2–3 most critical assumptions in the model — the things that must be true for the business to work.
4. Flag any block where my input is too vague to be useful and suggest what information I need to gather.
5. End with a "Key Risks and Open Questions" section that gives me a prioritized list of what to validate first.

#CANVAS QUALITY CRITERIA:
1. Specificity: Each entry should describe a concrete segment, channel, activity, or cost — not a category. "LinkedIn outreach and referral program" is specific. "Marketing" is not.
2. Proportionality: Treat each block with appropriate depth. Customer Segments and Value Propositions deserve the most detail; Key Resources and Activities should be thorough but efficient.
3. Interconnection: The model should show how the blocks reinforce each other. A premium value proposition must align with premium channels and a cost structure that supports them.
4. Honesty: Identify where the model has gaps or relies on unproven assumptions.
5. Actionability: The analysis should give the reader a clear sense of what to do next, not just what the model looks like today.

#INFORMATION ABOUT ME:
- Business name or working title: [BUSINESS_NAME]
- What the business does (core offer): [CORE_OFFER]
- Who the primary customer is: [PRIMARY_CUSTOMER]
- Current stage (idea / pre-revenue / early revenue / scaling): [STAGE]
- Any known details about pricing, channels, or operations: [KNOWN_DETAILS]

#RESPONSE FORMAT:

BUSINESS MODEL CANVAS — [BUSINESS_NAME]

1. Customer Segments
   - [Segment 1: specific description with size or characteristic]
   - [Segment 2]
   - [Segment 3]
   Primary segment: [Name] — [one sentence on why this is the priority]

2. Value Propositions
   For [Segment 1]:
   - [Value proposition 1 — job done, pain relieved, or gain created]
   - [Value proposition 2]
   For [Segment 2]:
   - [Value proposition]

3. Channels
   Awareness: [How do customers discover the offer?]
   Evaluation: [How do customers assess whether to buy?]
   Purchase: [Where and how do they buy?]
   Delivery: [How is the product or service delivered?]
   Post-sale: [How is the relationship maintained?]

4. Customer Relationships
   - Relationship type: [e.g., Self-service / Dedicated account management / Community]
   - Acquisition approach: [brief description]
   - Retention approach: [brief description]

5. Revenue Streams
   - [Stream 1]: [pricing model, e.g., "Monthly subscription at €49–€199/mo based on team size"]
   - [Stream 2]: [pricing model]
   Revenue model type: [Recurring / Transactional / Usage-based / Mixed]

6. Key Resources
   - Physical: [if applicable]
   - Intellectual: [IP, data, brand, proprietary methods]
   - Human: [key roles or expertise required]
   - Financial: [capital requirements or dependencies]

7. Key Activities
   - [Activity 1: the most critical operational activity]
   - [Activity 2]
   - [Activity 3]

8. Key Partnerships
   - [Partner type]: [What they provide and why it matters]
   - [Partner type]: [What they provide and why it matters]

9. Cost Structure
   - [Cost item 1]: [Estimated magnitude: High / Medium / Low]
   - [Cost item 2]: [Magnitude]
   - [Cost item 3]: [Magnitude]
   Cost model type: [Cost-driven / Value-driven]
   Estimated gross margin range: [if calculable from provided data]

Model Coherence Analysis:
[2–3 paragraphs assessing how well the nine blocks work together. Flag misalignments explicitly.]

Critical Assumptions (must be true for the model to work):
1. [Assumption 1 — and how to validate it]
2. [Assumption 2 — and how to validate it]
3. [Assumption 3 — and how to validate it]

Key Risks and Open Questions:
1. [Risk or question — priority: High / Medium]
2. [Risk or question]
3. [Risk or question]

## Information about me

- Business name or working title: FleetSense
- What the business does: IoT-based fuel consumption monitoring for commercial vehicle fleets
- Who the primary customer is: Fleet managers at mid-sized logistics and transport companies (50–300 vehicles)
- Current stage: Early revenue — 4 paying customers, all acquired through founder network
- Any known details about pricing, channels, or operations: Currently charging €8/vehicle/month. Hardware installed by our team. Customers are in Germany and Austria. Main competitor is Fleetio (US-based, less hardware integration).