The California Practical Guidance bans charging for AI-saved time and requires input anonymization.

California's State Bar Standing Committee on Professional Responsibility and Conduct approved the Practical Guidance for the Use of Generative Artificial Intelligence in the Practice of Law on November 16, 2023. The guidance is the earliest substantive state-bar position on AI fee billing and remains the operational model the rest of the country has converged on. Two operational additions to the ABA Opinion 512 baseline matter for California-domiciled firms and for any firm with a California-licensed attorney on the matter.

First, the explicit ban on charging the client for AI-saved time. The Practical Guidance states: "A lawyer may use GenAI to more efficiently create work product and may charge for the time actually spent on the work product, such as refining AI inputs or prompts, or reviewing GenAI outputs. However, a lawyer must not charge the client the time saved due to the use of GenAI." [S08] The rule is explicit and goes beyond ABA Op. 512's general Rule 1.5 reasonableness analysis. California firms must structure the bill to show actual hours, not pre-AI estimates.

Second, the anonymization requirement. The Practical Guidance states: "A lawyer must not input any confidential information of the client into generative AI solution unless the lawyer knows that the provider will not share the information with others or use the information for itself, such as to train or improve its AI product. In addition, the lawyer must anonymize the input so that it does not identify the client." [S08] The anonymization duty is more specific than the ABA Op. 512 informed-consent standard; it operates as an input-side firewall even when the provider's terms permit confidential inputs. California-domiciled firms map this to a documented matter-file note recording how the input was anonymized.

The two additions translate into Clause 03 (Rule 1.5 fee treatment, with explicit no-charge-for-AI-saved-time language) and Clause 02 (Rule 1.6 informed consent, with anonymization protocol as the operational floor). The other three clauses in the pillar's clause library carry over without California-specific modification.