TRL measures technical maturity, not market success.
This page helps buyers and founders understand why a TRL 4 asset can be commercially valuable without pretending it is already a fully qualified production system.
TRL 4 = validated integrated prototype
That means the concept and core components are real and tested in lab conditions. It does not mean production deployment, qualification or market validation are finished.
Standard maturity ladder
Use this page in sales and onboarding so everyone reads the same maturity language.
Basic principles observed
Scientific principles identified. Literature review and core hypothesis exist.
Technology concept formulated
Concept and application are defined. Architecture sketches are visible.
Experimental proof of concept
Prototype components and experiments validate the concept in lab conditions.
Technology validated in lab
Integrated prototype, controlled testing and documented lab validation.
Validated in relevant environment
MVP tested outside pure lab conditions with limited field relevance.
System demonstrated in relevant environment
Full system integration and a real functional demonstration.
Prototype in operational environment
Pilot deployment in a real operational setting.
System complete and qualified
Production-ready system, qualified, documented and prepared for stable operation.
System proven in operational environment
Sustained commercial or operational use with external proof.
- TRL 3 → 4: integrated components demonstrated
- TRL 4 → 5: validation outside laboratory
- TRL 5 → 6: full system integration
- TRL 6 → 7: real-world pilot deployment
- TRL 7 → 8: qualification and repeatability
- TRL 8 → 9: sustained operational use
- TRL 1–3: scientific feasibility risk
- TRL 4–5: engineering integration risk
- TRL 6–7: operational viability risk
- TRL 8–9: market adoption and scaling risk
Useful benchmark ranges
These are placeholder benchmark bands for deep-tech / edge / hardware-heavy narratives. Replace with your own operating assumptions where needed.
| TRL | Indicative cumulative cost | Typical evidence state |
|---|---|---|
| 1–2 | $10k – $250k | Concept and literature stage |
| 3 | $100k – $500k | Lab proof of concept |
| 4 | $250k – $1M | Integrated prototype in lab |
| 5 | $500k – $2M | Validation in relevant environment |
| 6 | $1M – $5M | Full system demonstration |
| 7 | $2M – $10M | Pilot deployment |
| 8 | $5M – $25M | Qualification and production readiness |
| 9 | $10M – $100M+ | Sustained operational use |