Inception Labs

Inception Labs builds Mercury, the first family of commercial-scale diffusion large language models (dLLMs) that generate tokens in parallel for 5-10x faster inference than comparable speed-optimized models. The Inception API is an OpenAI-compatible REST interface exposing Mercury 2 (a 128K-context reasoning dLLM) and Mercury Edit 2 (a coding-focused model) through chat, fill-in-the-middle, and code-edit completion endpoints, with server-sent-event streaming, tool calling, structured JSON-schema outputs, and an "instant" low-latency reasoning mode for realtime voice. Founded in 2024 by Stanford professor Stefano Ermon, the company is backed by Mayfield and ships official Python and TypeScript client libraries plus AWS Bedrock and Azure Foundry enterprise deployment.

Inception Labs publishes 4 APIs on the APIs.io network, including Chat API, Edit API, FIM API, and 1 more. Tagged areas include Artificial Intelligence, Machine Learning, Large Language Models, Diffusion Models, and Generative AI.

Inception Labs’ developer surface includes documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, support, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

48.7/100 developing ▬ flat Agent 45/100 agent ready Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1

AccessSelf serve

4 APIs 1 MCP Servers

Artificial IntelligenceMachine LearningLarge Language ModelsDiffusion ModelsGenerative AICode CompletionLLM APIOpenAI CompatibleDeveloper ToolsCompany

Kin Score

Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1

Composite quality — 48.7/100 · developing

Contract Quality 17.1 / 25

Developer Ergonomics 12.5 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 0.7 / 13

Governance 1.4 / 12

Discoverability 8.2 / 10

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 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/inception-labs: 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 4

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

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

MCPServer

LLMsTxt

AgenticAccess

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Arazzo

Arazzo

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

SDKs

SDKs

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: inception-labs
name: Inception Labs
description: Inception Labs builds Mercury, the first family of commercial-scale diffusion large language models (dLLMs) that
  generate tokens in parallel for 5-10x faster inference than comparable speed-optimized models. The Inception API is an OpenAI-compatible
  REST interface exposing Mercury 2 (a 128K-context reasoning dLLM) and Mercury Edit 2 (a coding-focused model) through chat,
  fill-in-the-middle, and code-edit completion endpoints, with server-sent-event streaming, tool calling, structured JSON-schema
  outputs, and an "instant" low-latency reasoning mode for realtime voice. Founded in 2024 by Stanford professor Stefano Ermon,
  the company is backed by Mayfield and ships official Python and TypeScript client libraries plus AWS Bedrock and Azure Foundry
  enterprise deployment.
url: https://raw.githubusercontent.com/api-evangelist/inception-labs/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://docs.inceptionlabs.ai/logo.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- mayfield
x-tier: enriched
x-tier-reason: portfolio-lead-enriched
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Artificial Intelligence
- Machine Learning
- Large Language Models
- Diffusion Models
- Generative AI
- Code Completion
- LLM API
- OpenAI Compatible
- Developer Tools
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: inception-labs:inception-labs-chat-api
  name: Inception Labs Chat API
  description: Chat completion endpoints (OpenAI-compatible).
  humanURL: https://docs.inceptionlabs.ai/get-started/get-started
  baseURL: https://api.inceptionlabs.ai/v1
  tags:
  - Chat
  properties:
  - type: OpenAPI
    url: openapi/inception-labs-chat-api-openapi.yml
  - type: DeveloperPortal
    url: https://platform.inceptionlabs.ai
  - type: Documentation
    url: https://docs.inceptionlabs.ai
  - type: APIReference
    url: https://docs.inceptionlabs.ai/api-reference
  - type: GettingStarted
    url: https://docs.inceptionlabs.ai/get-started/get-started
- aid: inception-labs:inception-labs-edit-api
  name: Inception Labs Edit API
  description: Code edit completion endpoints.
  humanURL: https://docs.inceptionlabs.ai/get-started/get-started
  baseURL: https://api.inceptionlabs.ai/v1
  tags:
  - Edit
  properties:
  - type: OpenAPI
    url: openapi/inception-labs-edit-api-openapi.yml
  - type: DeveloperPortal
    url: https://platform.inceptionlabs.ai
  - type: Documentation
    url: https://docs.inceptionlabs.ai
  - type: APIReference
    url: https://docs.inceptionlabs.ai/api-reference
  - type: GettingStarted
    url: https://docs.inceptionlabs.ai/get-started/get-started
- aid: inception-labs:inception-labs-fim-api
  name: Inception Labs FIM API
  description: Fill-in-the-middle code completion endpoints.
  humanURL: https://docs.inceptionlabs.ai/get-started/get-started
  baseURL: https://api.inceptionlabs.ai/v1
  tags:
  - FIM
  properties:
  - type: OpenAPI
    url: openapi/inception-labs-fim-api-openapi.yml
  - type: DeveloperPortal
    url: https://platform.inceptionlabs.ai
  - type: Documentation
    url: https://docs.inceptionlabs.ai
  - type: APIReference
    url: https://docs.inceptionlabs.ai/api-reference
  - type: GettingStarted
    url: https://docs.inceptionlabs.ai/get-started/get-started
- aid: inception-labs:inception-labs-models-api
  name: Inception Labs Models API
  description: List available models.
  humanURL: https://docs.inceptionlabs.ai/get-started/get-started
  baseURL: https://api.inceptionlabs.ai/v1
  tags:
  - Models
  properties:
  - type: OpenAPI
    url: openapi/inception-labs-models-api-openapi.yml
  - type: DeveloperPortal
    url: https://platform.inceptionlabs.ai
  - type: Documentation
    url: https://docs.inceptionlabs.ai
  - type: APIReference
    url: https://docs.inceptionlabs.ai/api-reference
  - type: GettingStarted
    url: https://docs.inceptionlabs.ai/get-started/get-started
common:
- type: Website
  url: https://inceptionlabs.ai
- type: DeveloperPortal
  url: https://platform.inceptionlabs.ai
- type: Documentation
  url: https://docs.inceptionlabs.ai
- type: APIReference
  url: https://docs.inceptionlabs.ai/api-reference
- type: GettingStarted
  url: https://docs.inceptionlabs.ai/get-started/get-started
- type: Blog
  url: https://www.inceptionlabs.ai/blog
- type: GitHubOrganization
  url: https://github.com/inception-ai-inc
- type: Pricing
  url: https://www.inceptionlabs.ai/models
- type: SignUp
  url: https://platform.inceptionlabs.ai
- type: Support
  url: https://docs.inceptionlabs.ai/support/support
- type: TermsOfService
  url: https://docs.inceptionlabs.ai/support/tou
- type: PrivacyPolicy
  url: https://docs.inceptionlabs.ai/support/privacy
- type: SDKs
  url: packages/inception-labs-packages.yml
- type: Packages
  url: packages/inception-labs-packages.yml
- type: Authentication
  url: authentication/inception-labs-authentication.yml
- type: Conventions
  url: conventions/inception-labs-conventions.yml
- type: ErrorCatalog
  url: errors/inception-labs-problem-types.yml
- type: Lifecycle
  url: lifecycle/inception-labs-lifecycle.yml
- type: DataModel
  url: data-model/inception-labs-data-model.yml
- type: Conformance
  url: conformance/inception-labs-conformance.yml
- type: MCPServer
  url: mcp/inception-labs-mcp.yml
- type: LLMsTxt
  url: llms/inception-labs-llms.txt
- type: AgenticAccess
  url: agentic-access/inception-labs-agentic-access.yml
- type: DomainSecurity
  url: security/inception-labs-domain-security.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Arazzo
  name: Discover a chat model and generate a completion
  url: arazzo/inception-labs-chat-completion.arazzo.yml
- type: Arazzo
  name: Fill-in-the-middle code autocomplete
  url: arazzo/inception-labs-code-autocomplete.arazzo.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Inception Labs

Kin Score

APIs 4

Inception Labs Chat API

Inception Labs Edit API

Inception Labs FIM API

Inception Labs Models API

Arazzo Workflows 3

_Index

Inception — discover a chat model and generate a completion

Inception — fill-in-the-middle code autocomplete

MCP Servers 1

inception-labs-mcp.yml

Security Posture 2

Inception Labs Authentication

Inception Labs Domain Security

Agentic Access 1

Inception Labs Agentic Access

Resources