Inflection AI

Developer of the Inflection foundation models and Pi personal AI. Historical releases and API variants are documented separately from the current Pi product.

6 named historical foundation and API releases. Named Inflection foundation releases and proprietary Pi/Productivity API adaptations. Archived specifications remain historical. Current Pi is a multi-model product; no current checkpoint mapping or native API availability is inferred.

Closed-weight models

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Input tokensOutput tokens

Estimate = (input tokens × input price + output tokens × output price) / 1,000,000. Include conversation history in input and billed reasoning in output. Input-only decision models ignore the output setting; enter all billed input for one decision, including its question and criteria. Media, tools and discounts are separate.

6 models

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Model input and output limits, prices and estimated cost per question at the selected token counts.
Input tokensPublished limit*	Output tokensMaximum per response*	Input pricePer 1M tokens	Cost per question1,000 input + 500 outputEstimated · uncached
Not collected	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗
Not collected	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗
Not collected	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗
8Kcontext tokens	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗
8Kcontext tokens	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗
Not collected	Not collected	Usage pricingNot collected	Needs rate detailsPrice details ↗

* Media models show their native limits. A shared context window includes both input and output tokens.

Original currency and billing unit, without currency conversion. Rates are dated snapshots; open the conditions for tiers, promotions and endpoint restrictions.How to read the data

Catalog coverage

Closed-weight model variants and explicitly identified closed-source managed model components across language, code, image, video, audio and other documented modalities. Global provider and historical-release coverage is being expanded; this is not yet exhaustive. 172 company reviews are still open.

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