Frontier developers must publish a transparency report before deploying a new frontier model
Context fileUnder California SB 53, Business and Professions Code Section 22757.12 (as added by SB 53)
What does it require?
Before or at the time a frontier developer deploys a new frontier model, or a substantially modified version, it must publish a transparency report on its website describing the model, its intended uses and restrictions, the release date and modalities, and how to contact the developer. A large frontier developer must add a summary of its catastrophic-risk assessment for the model, the results, any third-party evaluators involved and the steps taken under its frontier AI framework, with trade-secret and security redactions explained.
Practical action
Attach a model-release transparency report to the launch checklist, with a redaction log for withheld details.
Who does it apply to?
Frontier developers above the compute threshold; the catastrophic-risk elements apply to large frontier developers above the revenue threshold.
- Sectors
- Cross-sector / all sectors
- Use cases
- Generative AI and foundation models
Applies from:
Which controls meet this duty?
Satisfies: the control, operated properly, does the work the duty asks for. Supports: it contributes but the duty needs more. Each control page lists every other duty it serves, so work done once can be counted once.
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satisfiesProcessProduct or model owner · at launch and on material changeTechnical documentation, model cards and instructions for use
Serves 13 recorded duties · evidence: Technical documentation file, Model card or deployer information pack, Instructions for use
The model card content the report is built from.
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supportsPolicyHead of AI safety · annualFrontier model safety and security framework
Serves 9 recorded duties · evidence: Published frontier safety framework, Dangerous-capability evaluation report, Threshold notification to an authority
Report describes steps taken under the framework.
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supportsProcessRelease manager · at launch and on material changeModel release and change-management gate
Serves 5 recorded duties · evidence: Release or change approval record, Release and change-classification procedure
Release is gated on the report being published.
What evidence would a reviewer expect?
| Evidence | Type | Notes |
|---|---|---|
| Published model transparency report | document | |
| Redaction justification log | record |
Framework mappings
Original editorial crosswalks. They cite clause numbers only and reproduce no standard text; confidence reflects how direct the mapping is.
See every California (United States) duty mapped this way →
| Framework | Reference | Note | Confidence |
|---|---|---|---|
| NIST AI RMF 1.0 | GOVERN 4.2, MAP 5.1, MEASURE 2.6 | Public documentation of intended use and safety evaluation. | medium |
| ISO/IEC 42001:2023 | Annex A.8.2, A.8.3 | System documentation and external reporting. | medium |
Cite this record
AIPolicyTracker (2026). “Frontier developers must publish a transparency report before deploying a new frontier model (California SB 53)”. https://aipolicytracker.org/obligations/us-california-sb-53-transparency-report (accessed 24 September 2026). Data licensed CC BY 4.0.
Cite the official text alongside it: SB 53 Transparency in Frontier Artificial Intelligence Act, California Legislative Information, https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202520260SB53.
Similar obligations in other instruments
- Disclose AI interaction and label synthetic content — EU AI Act, European Union
- Employers must inform workers and their representatives before using high-risk AI at work — EU AI Act, European Union
- Deployers must tell natural persons that a high-risk AI system is used in decisions about them — EU AI Act, European Union
- Providers of generative AI must mark synthetic output as artificially generated in a machine-readable way — EU AI Act, European Union
- Deployers of emotion recognition or biometric categorisation must inform exposed persons — EU AI Act, European Union
- Deployers must disclose deepfakes and AI-generated text published on matters of public interest — EU AI Act, European Union
- Deployers must explain individual decisions taken with high-risk AI on request — EU AI Act, European Union
- Provide deployers with clear instructions for use — EU AI Act, European Union
Informational only, not legal advice. Verify every claim against the linked official sources and consult qualified counsel before acting.