GPT-6.1 Terra priced at $1/$5 per M tokens, but the '9x cheaper per task' math doesn't hold
2C_ornot2C · x · 2026-10-28
- GPT-6.1 Terra pricing: $1/M input, $5/M output — half of GPT-5.6.
- OpenAI's claim: 9x cheaper per task, derived from 3x token efficiency multiplied by a quarter of the price.
- Reality check: Artificial Analysis measured under a third of the cost at low-to-medium effort levels.
- The author's point: multiplying two ratios is not a bill — marketing math and actual spending diverge.
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