Built by people who got
burned by AI detectors
We ran a content agency. We used every AI detector on the market. None of them agreed with each other — and all of them were defeated in minutes by a free paraphraser. So we built something that could not be fooled: a tool that watches the writing process itself.
Try it freeRestore trust in human authorship
The rise of generative AI has created a fundamental crisis of trust in the content industry. Clients cannot verify what they are paying for. Agencies cannot verify what their freelancers are producing. And the tools that were supposed to solve this problem have made it worse.
Invisible Pencil exists to provide the only form of proof that matters: evidence of the writing process itself. Not a probability score. Not a detector verdict. Actual keystroke-by-keystroke proof that a human produced the content.
The question no one was asking
Every AI detector asks: “Does this text look like it was written by AI?” That is the wrong question. The right question is: “Was this content actually produced by a human typing it out?”
Process cannot be faked by paraphrasers
50+ behavioural signals captured live
Zero dependence on finished text analysis
What we stand for
The principles that guide every decision we make about the product.
Trust through transparency
We believe honest content relationships start with verifiable proof. Writers on Invisible Pencil know they are being monitored — and that transparency builds trust on both sides.
Process over output
Finished text can be manipulated. The writing process cannot. We built Invisible Pencil on the conviction that how content is created is more revealing than what the final product looks like.
Precision over guesswork
AI text detectors give you probabilities. We give you evidence. Every score we produce is grounded in objective behavioural data captured in real time, not statistical pattern-matching on finished text.
Built for teams that scale
Whether you manage 2 writers or 200, the platform is designed to give you complete visibility without adding overhead. Simple flat pricing, unlimited seats on Premium.
Our journey
From a frustrated agency owner to the leading process-level writing verification platform.
2023
Founded after watching three AI detectors give three completely different verdicts on the same article.
Early 2024
Launched private beta with 12 content agencies. Detected AI-generated content in 94% of flagged documents.
Mid 2024
Expanded behavioural engine to 50+ signals. Achieved 98% accuracy across independent test sets.
Late 2024
Reached 500 active workspaces. Launched live session monitoring and smart alert system.
2025
Crossed 10,000 verified documents. Introduced Premium plan with unlimited writers and full analytics suite.
The team
Content professionals and engineers who lived the problem before building the solution.
Alex Carter
Co-founder & CEO
Former content operations lead at a 200-person agency. Watched the AI content problem emerge first-hand and spent two years building the solution.
Mia Thornton
Co-founder & CTO
Behavioural signal processing researcher turned engineer. Designed the core fingerprinting engine that powers Invisible Pencil's detection accuracy.
Daniel Reyes
Head of Product
Previously led product at two B2B SaaS companies. Obsessed with making complex verification workflows feel effortless for non-technical content managers.
Priya Nair
Head of Customer Success
Spent six years in editorial operations before joining Invisible Pencil. Helps content teams get maximum value from behavioural verification from day one.
Ready to see it in action?
Join thousands of content teams who have moved from guessing to knowing. Free to start — no credit card required.