# Price sensitivity varies by model > The same discount moves engines differently, so a markdown that shifts share on one engine may barely move another and price strategy should be tested per engine, not blended. - **Affects (funnel stage):** Choice - **Evidence:** reported - **Confidence:** High - **Impact:** 2/3 - **Status:** active - **Last verified:** 2026-07-08 ## Per-platform status Undocumented platforms show "unknown" - honest unknowns, never invented. | Platform | Status | Notes | Source | | --- | --- | --- | --- | | ChatGPT | unknown | Not documented by this platform. | - | | Gemini / Google AI Mode | unknown | Not documented by this platform. | - | | Perplexity | unknown | Not documented by this platform. | - | | Copilot | unknown | Not documented by this platform. | - | | Claude | unknown | Not documented by this platform. | - | ## Evidence and sources - [ACES (arXiv:2508.02630)](https://arxiv.org/abs/2508.02630) (2026-07-08) ## How to act on this Test any price change isolated to one engine and compare that engine's before/after win rate, re-checking sensitivity after major model updates. ### Related checklist items - [Account for model-specific price sensitivity: the same discount moves engines differently.](https://agentmint.net/tools/agent-selection-checklist/#b-price-position-03) (Selection) ### Related signals - [Competitive price awareness with parity](https://agentmint.net/signals/price-competitive-awareness/) - [Defined agent win-rate measurement](https://agentmint.net/signals/agent-win-rate-measurement/) - [Re-test after every major model update](https://agentmint.net/signals/retest-on-model-updates/) ## Notes Based on ACES (arXiv:2508.02630), a controlled agent-shopping simulation, not measured real-world sales.