# Paper Argues Reasoning Effort Is a Vendor-Specific Contract Term, Not a Portable API Setting

The authors treat every API purchase as a dated agreement covering the served model, the effort term, the output rail and the price schedule, rather than a model name alone.

- Published: 2026-08-19T06:20:14.557Z
- Canonical: https://polylog.news/ai/2026-08-19/paper-argues-reasoning-effort-is-a-vendor-specific-contract
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [arXiv cs.AI](https://arxiv.org/abs/2608.16956)

A preprint posted to arXiv, The Price of Thinking: Reasoning Effort as a Model-Specific API Contract, makes a point that application programming interface (API) buyers often discover only through unexpected costs. What a customer purchases…

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