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Model infoModelsSnapshot: 15 Oct 2026

Inflection AI / Inflection 3

Inflection 3 Pi

Conversational API variant trained for emotional intelligence, backstory and customer support.

historicalClosed weightsText generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
4 of 16 specification fields collected
Context window8KSee specification notes below
Maximum outputNot collectedAwaiting source review
Input billingNot collectedInflection API (historical)
Output billingNot collectedNo inferred price

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
8KSource for Context / input limit (opens in a new tab)

Historical cookbook specification for both 3.0 models. Exact integer and input/output accounting are not specified.

Maximum output
Not collected
Reasoning
Not collected
Tool calling
Not collected
Structured output
Not collected

Prompted JSON examples are not proof of enforced JSON schema or constrained decoding.

Streaming
SupportedSource for Streaming (opens in a new tab)

The cookbook demonstrates stream=True with Pi and explicitly offers Productivity as the alternative selector. Historical endpoint behavior, not a current availability guarantee.

Batch processing
Not collected
Fine-tuning
Not collected
Knowledge cutoff
Not collected
Release date
Not collected
Parameters
Not collected
Architecture
Not collected
Languages
Not collected
Context caching
Not collected

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

Inflection API (historical)

Provider source (opens in a new tab)
API model ID
inflection_3_pi
Access
Documented API selector retained from the archived developer portal. Current service access is unverified; API-key provisioning and paid inference were not attempted.
Regions
Current regional availability unverified.
historicalChatRoute
/external/api/inference/openai/v1/chat/completionsSource for historicalChatRoute (opens in a new tab)

Historical compatible route demonstrated in the cookbook. Do not treat as a currently verified endpoint.

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

The current consumer privacy policy explicitly excludes commercial API processing covered by separate agreements. Consumer training and retention settings must not be copied to this API. A current API data-processing policy remains unverified.

Read the service policy (opens in a new tab)

OpenRouter (no active route)

Provider source (opens in a new tab)
API model ID
inflection/inflection-3-pi
Access
The public endpoint inventory returned an empty endpoints array on October 14, 2026, and the active model list omitted this model. Historical identity remains, with no current hosted rate or route established.
Regions
Current regional availability unverified.

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

Retention, training use, regional processing and enterprise terms have not been summarized for this endpoint.

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

Inflection API (historical)

inflection_3_pi
Not verified

No model-specific cache contract verified.

How it works
Not collected

No model-specific cache contract verified.

Minimum reusable input
Not collected

No model-specific cache contract verified.

Lifetime & refresh
Not collected

No model-specific cache contract verified.

How to enable it
Not collected

No model-specific cache contract verified.

Usage fields
Not collected

No model-specific cache contract verified.

Billing rules
Not collected

No model-specific cache contract verified.

Limits & data boundaries
Not collected

No model-specific cache contract verified.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

OpenRouter (no active route)

inflection/inflection-3-pi
Not verified

No model-specific cache contract verified.

How it works
Not collected

No model-specific cache contract verified.

Minimum reusable input
Not collected

No model-specific cache contract verified.

Lifetime & refresh
Not collected

No model-specific cache contract verified.

How to enable it
Not collected

No model-specific cache contract verified.

Usage fields
Not collected

No model-specific cache contract verified.

Billing rules
Not collected

No model-specific cache contract verified.

Limits & data boundaries
Not collected

No model-specific cache contract verified.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

Inferred from the developer’s in-house model or proprietary API adaptation description and restricted access. The reviewed release supplies no weights for this exact checkpoint; this does not classify its dependencies or openly released base models as closed.

Classification evidence (opens in a new tab)

Sources reviewed