---
title: "Traps — named pricing failure modes · Undominated.ai"
canonical: https://undominated.ai/traps/
description: "As of 2026-11-05, 74 publishable models raise the input rate past a prompt-length threshold — a context cliff, with every rung kept. Other traps on this index are computed the same way or marked we cannot say. The tokenizer-tax page refuses a percent until a public corpus exists."
---

# Traps — named pricing failure modes · Undominated.ai

> As of 2026-11-05, 74 publishable models raise the input rate past a prompt-length threshold — a context cliff, with every rung kept. Other traps on this index are computed the same way or marked we cannot say. The tokenizer-tax page refuses a percent until a public corpus exists.

# Traps

Named ways a headline price stops being the price. Each page is a definition, a computation, and the offender table — or an explicit we cannot say. We will not invent a ninth trap without a computation, and we will not print a tokenizer-tax percent.

As of 2026-11-05, 74 publishable models raise the input rate past a prompt-length threshold — a context cliff, with every rung kept. Other traps on this index are computed the same way or marked we cannot say. The tokenizer-tax page refuses a percent until a public corpus exists.

 - [Context cliff](https://undominated.ai/traps/context-cliff/) computed · 74 Every published context-tier step function. Ladders keep every rung.
- [Reasoning meter](https://undominated.ai/traps/reasoning-meter/) computed · 28 Separately billed reasoning tokens. The headline input/output pair is incomplete.
- [Cache-write penalty](https://undominated.ai/traps/cache-write-penalty/) we cannot say The lean catalogue carries cached-input rates, not a cache-write tariff, so a break-even cannot be computed here.
- [Credit cliff](https://undominated.ai/traps/credit-cliff/) we cannot say Included-pool exhaustion is a plan fact. This page will not guess a mid-month revert to API without a measured pool in the catalogue projection.
- [Silent truncation](https://undominated.ai/traps/silent-truncation/) we cannot say No catalogue field records a hidden context cap (the ChatGPT Free Instant 27K claim is not in this payload). We will not guess.
- [Alias drift](https://undominated.ai/traps/alias-drift/) computed · 19 *-latest is a moving SKU. The pointer is recorded; we do not freeze a vendor alias as a model.
- [Precision bait](https://undominated.ai/traps/precision-bait/) computed · 71 Distinct sellers, not rows. A cheaper lower-quant endpoint is a trade, not a saving. See /spreads/.
- [Tokenizer tax](https://undominated.ai/traps/tokenizer-tax/) refused The cross-vendor tokenizer-inflation figure is unverified in this repo. This page exists to refuse a percent until a public corpus exists. We will not print one.

## Continue your investigation

 - [Context cliffs](/cliffs/)
- [Spreads](/spreads/)
- [Reasoning effort](/effort/)
- [Methodology](/methodology/)