Inflection AI website screenshot

Inflection AI

Inflection AI was founded in 2022 by Mustafa Suleyman, Reid Hoffman, and Karen Simonyan to build the consumer assistant Pi, backed by Inflection-1, Inflection-2, and Inflection-2.5 foundation models. In March 2024 Microsoft licensed Inflection's technology for roughly $650M and hired most of the founding team into its new AI division, after which Inflection pivoted to an enterprise AI lab under CEO Sean White. Today the company markets its Inflection-2.5 series and successors to enterprise customers through a Conversational API that integrates Inflection models into business applications. A developer portal is published at developers.inflection.ai with a dashboard, docs, API keys, playground, and usage metering.

Inflection AI publishes 1 API on the APIs.io network: Inference API. Tagged areas include AI, Foundation Models, LLM, Conversational AI, and Enterprise AI.

Inflection AI’s developer surface includes authentication, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub
33.4/100 thin ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreeSelf serve⚡ Free to try
3 APIs
AIFoundation ModelsLLMConversational AIEnterprise AIPiInflection-2.5InferenceEmpathic AI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 33.4/100 · thin
Contract Quality 13.2 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/inflection-ai: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 3

Individual APIs this provider publishes, each with its own machine-readable definition.

Inflection Conversational API

Enterprise inference API serving Inflection's empathic conversational foundation models (Inflection-2.5 series and successors). Accepts chat message arrays, context, and paramet...

Inflection Developer Playground

Interactive playground inside the developer portal for testing prompts against Inflection models before integrating against the Conversational API.

Inflection AI Inference API

The Inference API from Inflection AI — 1 operation(s) for inference.

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Inflection AI API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Inflection Ai Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Inflection Ai Rate Limits

2 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Inflection Ai Finops

FINOPS

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Inflection Ai Authentication

http · 1 scheme

SECURITY

Inflection Ai Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Inflection Ai Agentic Access

1 operation · 1 acting

1 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Company 4

The organization behind the API

Website
Website
 Blog
Blog
 Press
Press
 LinkedIn
LinkedIn

Other 3

Properties that don't map to a standard resource type

Enterprise
Enterprise
 Pi
Pi
 X
X

Source (apis.yml)

apis.yml Raw ↑ 
aid: inflection-ai
name: Inflection AI
description: Inflection AI was founded in 2022 by Mustafa Suleyman, Reid Hoffman, and Karen Simonyan to build the consumer
  assistant Pi, backed by Inflection-1, Inflection-2, and Inflection-2.5 foundation models. In March 2024 Microsoft licensed
  Inflection's technology for roughly $650M and hired most of the founding team into its new AI division, after which Inflection
  pivoted to an enterprise AI lab under CEO Sean White. Today the company markets its Inflection-2.5 series and successors
  to enterprise customers through a Conversational API that integrates Inflection models into business applications. A developer
  portal is published at developers.inflection.ai with a dashboard, docs, API keys, playground, and usage metering.
type: Index
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/inflection-ai.png
tags:
- AI
- Foundation Models
- LLM
- Conversational AI
- Enterprise AI
- Pi
- Inflection-2.5
- Inference
- Empathic AI
url: https://raw.githubusercontent.com/api-evangelist/inflection-ai/refs/heads/main/apis.yml
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.20'
apis:
- aid: inflection-ai:conversational-api
  name: Inflection Conversational API
  description: Enterprise inference API serving Inflection's empathic conversational foundation models (Inflection-2.5 series
    and successors). Accepts chat message arrays, context, and parameters and returns assistant completions. Authenticated
    with API keys issued from the developer portal.
  humanURL: https://developers.inflection.ai/
  baseURL: https://developers.inflection.ai/
  tags:
  - Chat
  - Conversational
  - Completions
  - Enterprise
  properties:
  - type: Documentation
    url: https://developers.inflection.ai/
- aid: inflection-ai:playground
  name: Inflection Developer Playground
  description: Interactive playground inside the developer portal for testing prompts against Inflection models before integrating
    against the Conversational API.
  humanURL: https://developers.inflection.ai/
  baseURL: https://developers.inflection.ai/
  tags:
  - Playground
  - Developer Tools
  properties:
  - type: Documentation
    url: https://developers.inflection.ai/
- aid: inflection-ai:inflection-ai-inference-api
  name: Inflection AI Inference API
  description: The Inference API from Inflection AI — 1 operation(s) for inference.
  humanURL: https://developers.inflection.ai/
  baseURL: https://developers.inflection.ai/
  tags:
  - Inference
  properties:
  - type: OpenAPI
    url: openapi/inflection-ai-inference-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/inflection-ai-agentic-access.yml
- type: DomainSecurity
  url: security/inflection-ai-domain-security.yml
- type: Authentication
  url: authentication/inflection-ai-authentication.yml
- type: Website
  url: https://inflection.ai/
- type: Enterprise
  url: https://inflection.ai/enterprise
- type: DeveloperPortal
  url: https://developers.inflection.ai/
- type: Pi
  url: https://pi.ai/
- type: Blog
  url: https://inflection.ai/blog
- type: Press
  url: https://inflection.ai/press
- type: LinkedIn
  url: https://www.linkedin.com/company/inflection-ai/
- type: X
  url: https://x.com/inflectionAI
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com