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Our AI runs realistic sales conversations with your reps and gives each one personalised feedback.

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People Development

What Is a Scorecard? Criteria, Levels, Limits

A conversation scorecard is an evaluation rubric set before the call: named criteria, described levels, and evidence from the transcript for every rating.

Philipp Heideker15 min read
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People Development

Practice Without an Audience: Role Plays

Role plays in training rarely fail on method. They fail because safety and repetition compete for the same scarce resource in a training room.

Philipp Heideker12 min read
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Practical writing on sales training, coaching and onboarding – from the team that works with sales organisations every day.

People Development

What Is a Scorecard? Criteria, Levels, Limits

A conversation scorecard is an evaluation rubric set before the call: named criteria, described levels, and evidence from the transcript for every rating.

Philipp Heideker15 min read
Read article
People Development

Practice Without an Audience: Role Plays

Role plays in training rarely fail on method. They fail because safety and repetition compete for the same scarce resource in a training room.

Philipp Heideker12 min read
Read article
People Development

Learning Transfer: Why Training Rarely Sticks

Learning transfer fails because nobody schedules the practice phase between the classroom and the real conversation. Here is what the evidence supports.

Philipp Heideker12 min read
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AI Coaching & Training

What Is an AI Coach? Definition, Scope and Limits

An AI coach is software that develops employees at work: it explains, has them practice, and scores every attempt against a standard a leader defined.

Philipp Heideker15 min read
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AI Coaching & Training

Building Believable Counterparts: What Makes an AI Persona Work

A believable AI persona needs no long backstory. What matters is a clear goal, realistic resistance and consistent behaviour through the conversation.

Philipp Heideker12 min read
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AI Coaching & Training

What Is an AI Role Play? Definition, Process and Limits

An AI role play is a spoken practice conversation with a virtual counterpart, evaluated against a defined standard. Here is how the format works.

Philipp Heideker12 min read
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People Development

Deliberate Practice at Work: Why One Training Session Rarely Changes Behavior

Deliberate practice turns knowledge into behavior through application, feedback and another attempt. The hard part is creating enough chances to practise.

Philipp Heideker13 min read
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News

Sleak as a Guest of DKB at the Rexel Super Cup 2026

Two handball games at the SAP Garden, plenty of conversations about AI in training and people development – and one question that stayed with us.

Lennard Greve3 min read
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Knowledge & Onboarding

How Do You Verify Someone Actually Understood a Methodology?

A finished course proves attendance, not understanding. How to verify that someone can apply a methodology, and how to turn that into real evidence.

Philipp Heideker14 min read
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AI Coaching & Training

How to Practice Difficult Patient Conversations

A 20-minute drill with a scenario card and an observation sheet turns difficult patient conversations practice into real repetitions.

Philipp Heideker15 min read
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Knowledge & Onboarding

How Do You Make Sure Your Team Actually Masters Product Knowledge?

Product knowledge exists when a person can retrieve and explain it under questioning, not when they receive a document or pass a test.

Philipp Heideker14 min read
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News

Sleak Wins the Open Bosch Award 2026

This week, Sleak was named the winner of this year's Open Bosch Award together with Bosch Power Tools, for AI-powered negotiation coaching.

Lennard Greve5 min read
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AI Coaching & Training

Can AI Replace Human Sales Coaches? The Honest Answer

Can AI replace human sales coaches? No. It replaces the repetitive parts of coaching and frees humans for judgment, relationship, and the hard conversations.

Philipp Heideker10 min read
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AI Coaching & Training

AI Role-Play in Sales: How Realistic Practice Improves Sales Conversations

AI role-play lets sales reps practice real conversations with an AI persona and get scored feedback that turns repetition into skill.

Philipp Heideker11 min read
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AI Coaching & Training

AI Coaching Platform for Enterprises: The Selection Criteria That Actually Matter

How to choose an AI coaching platform for enterprises in 2026: the difference from an LMS, and the seven criteria DACH buyers weigh most.

Philipp Heideker10 min read
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AI Coaching & Training

Training Difficult Patient Conversations in Healthcare

Doctors and nurses can rehearse difficult patient conversations in AI simulations that are safe, measurable and GDPR-compliant.

Philipp Heideker13 min read
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People Development

People Development at Scale: The Capability Every Enterprise Underinvests In

People development at scale is the capability to turn knowing into doing across a whole workforce. Why enterprises underinvest in it, and how to build it.

Philipp Heideker16 min read
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People Development

Why Sales Training Gets Forgotten: The 70/87 Percent Trap in L&D

Sales teams forget 70 to 87 percent of training content within 90 days. Here is why the forgetting curve wins, and what layer actually stops it.

Philipp Heideker17 min read
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People Development

Completion Is Not Competence: Why Every L&D Metric You Report Is Wrong

Completion rate is the wrong way to measure training effectiveness. The honest L&D metric stack: capability movement, behavior trend, and revenue link.

Philipp Heideker18 min read
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People Development

Rolling Out Scorecard-Based Coaching in 8 Weeks: The Playbook

A practical 8-week playbook for rolling out scorecard-based coaching: design, calibration, pilot, manager enablement, and proving ROI in one quarter.

Philipp Heideker13 min read
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People Development

Scorecard-Based Coaching: How Structured Feedback Transforms Sales Training

Scorecard-based coaching makes sales excellence definable and feedback reproducible. Method, structure, common mistakes, and the role of AI.

Philipp Heideker13 min read
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GDPR & Compliance

GDPR-Compliant AI Sales Training: How Anonymized Practice Sessions Work

GDPR-compliant AI sales training works by architecturally separating identity from training data. How anonymized practice sessions actually run, step by step.

Philipp Heideker13 min read
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GDPR & Compliance

GDPR-Compliant AI Coaching: What to Check When Choosing a Platform

The 5 criteria an AI coaching platform must meet to be GDPR-compliant. A checklist for data protection, IT security, and HR teams in the EU.

Philipp Heideker13 min read
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AI Coaching & Training

AI-Powered Training in the Enterprise: How Companies Roll Out AI Coaching Successfully

Enterprise AI coaching in 2026: requirements, rollout phases, costs, common mistakes, and how to measure success across a large organization.

Philipp Heideker12 min read
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AI Coaching & Training

AI Negotiation Training for Procurement: 7 Methods Compared for Sourcing Teams

AI negotiation training for procurement in 2026: 7 methods compared, from classroom to AI simulation. Costs, scalability, measurability and GDPR.

Philipp Heideker14 min read
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People Development

Practicing Difficult Employee Conversations: 8 Scenarios Where AI Makes Leaders More Confident

Eight concrete difficult-conversation scenarios, from performance reviews to terminations. How leaders practice with AI safely, at scale, and GDPR-compliant.

Philipp Heideker12 min read
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Knowledge & Onboarding

Customer Success Onboarding with AI: How New CSMs Become Productive in 14 Days Instead of 60

AI-driven CSM onboarding cuts ramp-up from 60 to 90 days down to 14, with scorecard-based measurability per skill dimension.

Philipp Heideker11 min read
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Knowledge & Onboarding

Sales Rep Onboarding with AI: How to Cut Ramp-Up Time in Half

AI-powered sales onboarding cuts time-to-productivity in half. See how the 90-day program works, with scorecards, metrics, and its real limits.

Philipp Heideker8 min read
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People Development

The Coaching Gap: Why Managers Are Accountable for Outcomes They Have No Tools to Produce

The coaching gap is the mismatch between what managers are accountable for and the tools they actually have. Why one-on-one coaching covers only 3-5%.

Philipp Heideker13 min read
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GDPR & Compliance

What Security Questionnaires Actually Test - And What They Should Tell You About Your AI Vendor

Security questionnaires aren't compliance theater - they're a vendor maturity diagnostic. The most telling question separates mature vendors from pretenders.

Philipp Heideker10 min read
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People Development

Selling AI in DACH: What We Learned From 40 Enterprise Conversations

Selling AI to DACH enterprises: why the DPA matters more than the demo, the champion is never the buyer, and the Works Council is a gift, not an obstacle.

Philipp Heideker12 min read
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People Development

Initiatives, Not Courses: A New Organizational Model for People Development

Initiatives, not courses, are the right unit for enterprise people development. Here's what an initiative is, why it works, and why it's only now possible.

Philipp Heideker11 min read
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People Development

Scaling Sales Training: Why Traditional Approaches Fail and How AI Fixes It

Traditional sales training can't scale past 100 reps. See why, and how AI-powered coaching solves capacity, consistency, and practice density at once.

Philipp Heideker11 min read
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AI Coaching & Training

What Is AI Sales Coaching? Definition, Benefits, and How It Works

AI sales coaching explained: definition, how it works, benefits, selection criteria, and limits. Measurable ramp-up impact for B2B sales teams.

Philipp Heideker10 min read
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People Development

How to Increase Your Close Rate: 7 Proven Strategies for B2B Sales Teams

How to increase close rate in B2B: 7 proven strategies with diagnostic framework, benchmarks, and concrete actions. From qualification to win/loss.

Philipp Heideker16 min read
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People Development

Sales Training: The Complete Guide to Methods, Formats, and Providers (2026)

Sales training 2026: 5 methodologies compared (SPIN, Challenger, MEDDIC), training formats with strengths and limits, provider types in the DACH market.

Philipp Heideker16 min read
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People Development

Sales Objection Handling: The 8 Most Common Objections and How to Master Them

Sales objection handling: the 8 most common B2B objections, 6 proven methods with examples, and why regular practice makes the difference.

Philipp Heideker16 min read
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AI Coaching & Training

10 Ways AI-Powered Role-Plays Transform Your Sales Training

10 ways AI role-plays transform sales training: interactive simulations, instant feedback, 41% faster ramp, and no risk to live pipeline.

Philipp Heideker12 min read
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AI Coaching & Training

Why AI in Sales Training Is Essential: 7 Ways It Transforms Revenue Performance

7 ways AI in sales training transforms revenue performance: higher close rates, shorter cycles, lower attrition, with measurable gains in 90 days.

Philipp Heideker11 min read
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Knowledge & Onboarding

AI-Powered Sales Onboarding: 5 Mistakes Top Teams Avoid

AI sales onboarding cuts ramp from months to weeks. The 5 most common mistakes top teams avoid, and how to fix them with AI role-plays.

Philipp Heideker10 min read
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AI Coaching & Training

AI-Powered Sales Training: The Game Changer for Distributed Sales Teams

Distributed sales teams break traditional coaching. AI-powered training closes the gap with instant, objective feedback across every time zone.

Philipp Heideker10 min read
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AI Coaching & Training

3x More Revenue Through AI Coaching: The Future of Sales Training

AI coaching turns every call into a predictable step toward close. See how Sleak drives up to 3x more revenue with role-plays and real-time coaching.

Philipp Heideker7 min read
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AI Coaching & Training

Gamification and AI in Sales Training: Why Top Teams Rely on Role-Plays with Sleak

Gamification and AI role-plays in sales training drive 60%+ higher engagement and 18% better meeting conversion. See the Sleak playbook.

Philipp Heideker8 min read
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AI Coaching & Training

Myths Debunked: Fact vs. Fiction About AI in Sales Training

The three biggest AI sales training myths, debunked with data. See why modern LLMs, scalability, and 40% faster ramp-up change the game for every team.

Philipp Heideker7 min read
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Knowledge & Onboarding

Accelerate Sales Rep Ramp-Up: How to Cut Onboarding Time in Half with AI Role-Plays

Cut sales rep ramp-up by 40-50% with AI role-plays. See the 30-60-90 plan, the hidden costs, and the conversation intelligence playbook that makes it work.

Philipp Heideker7 min read
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AI Coaching & Training

AI in Sales Training: How AI Role-Plays Empower Sales Reps Directly

AI role-plays for sales reps deliver on-demand practice, instant feedback, and measurable skill growth. See how reps use them to ramp faster and win more.

Philipp Heideker7 min read
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AI Coaching & Training

AI in Sales Training: How AI Role-Plays Revolutionize Your Sales Team

AI role-plays change what a sales org does, not just how one rep practices: up to 50% faster ramp, lower coaching cost, every pod on one scorecard.

Philipp Heideker9 min read
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AI Coaching & Training

Sales Training with AI: How Modern AI Solutions Are Rethinking Sales Training

Sales training with AI replaces one-off workshops with always-on practice, instant feedback, and data that proves what reps can actually do.

Philipp Heideker11 min read
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AI Coaching & Training

How to Improve Your Sales Calls with AI

Improve your sales calls with AI: simulation-based practice, instant feedback on tone and objections, data-driven personalization. Concrete steps inside.

Lennard Greve8 min read
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