The Product Desk

a16z's Sarah Wang and Tugce Erten published a direct attack on per-token billing: of 50 technical AI buyers, 27 prefer credits tied to recognizable work and 14 prefer tokens. That makes the meter a product spec — unit-of-work definition, effort bands and per-task cost telemetry all ship out of your backlog, not finance's. The sample is proprietary and unpublished, with 9 preferences unaccounted for, so treat the direction as real and the ratio as directional.

Avi Chawla's caching breakdown shows that prompt-cache entries are keyed to a specific model. Routing a long conversation to a cheaper model therefore re-prefills the whole accumulated history at cold rates, inverting the savings case behind most tiered-routing tickets. The same week, two production results show the pattern working when the tier decision happens once at task entry: a marketplace product-matching system hit 98% accuracy at one-seventh the cost, and DoorDash clears millions of daily events with cheap classifiers before any model call.

Datadog put three coding agents through six builds of a document portal, and every build shipped a critical IDOR letting any authenticated user read other users' documents. Plan mode changed nothing. Separately, prompt injection now carries NVD scores — Context7 at CVSS 9.0, Apache SkyWalking's MCP server at 9.8 — and MLflow's SSRF entered CISA's exploited-vulnerability catalog on 2026-08-19. Ownership checks and tool-parameter trust are language you write into stories, not cleanup your engineers infer.

Newcomer reported on August 27 that Town, an enterprise personal agent, is in talks to raise at a $1B valuation led by Index Ventures — two days after the Wall Street Journal put consumer assistant Instinct at a $2.5B valuation on $350M raised. Neither report discloses revenue, retention or usage, and Newcomer notes that venture capitalists themselves appear to be the power users. If your own agent metrics blend employees, design partners and enthusiasts with organic users, you are reading the same distorted cohort that priced this category.

Salesforce's July quarter grew 11%, but organic growth was 6.4% once the November 2025 Informatica acquisition is stripped out, per The Information. Workday decelerated from 13.5% to 12.8%. Agentforce ARR passed $1.5B, up 240%, against a raised full-year guide of $46.4B. AI ARR compounding fast off a small base while total growth slows is the signature of attach and bundling — and it is the frame your board will apply to your own AI numbers next quarter.