Sail Research

Sail Research provides infrastructure for long-horizon agents: cost-efficient inference for leading open-source models (GLM, DeepSeek, Kimi, Nemotron and others) run on demand. Its API is OpenAI- and Anthropic-compatible (Chat Completions, Responses, Messages, Batches), so existing clients migrate by changing the base URL and key. Completion windows (asap/priority/standard/flex) trade latency for lower per-token price for background and agentic workloads, and Sailboxes provide full persistent VMs for long-running agents. Sail raised $80M and is backed by Kleiner Perkins. This profile was enriched by the API Evangelist pipeline from Sail's public OpenAPI, docs, SDKs, CLI, and MCP surface.

Sail Research publishes 5 API contracts indexed on the APIs.io network, including Batches API, Chat Completions API, Messages API, and 2 more. Tagged areas include Company, Artificial Intelligence, LLM, Inference, and Agents.

The Sail Research catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Sail Research’s developer surface includes documentation, API reference, getting-started guide, pricing, signup flow, engineering blog, authentication, and 26 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

58.2/100 strong ▬ flat Agent 43/100 agent native Front door AI 5/6 prominent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 MCP Servers 3 Agent Skills

Company Artificial Intelligence LLM Inference Agents Machine Learning Developer Tools Open Source Models Infrastructure

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Information & Data Management

BC-610

Chat Completions APIMessages APIResponses API

POST /chat/completions POST /messages POST /messages/count_tokens POST /responses

AI Model Services

AE-110

Models API

GET /models

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 58.2/100 · strong

Contract Quality 10.8 / 19

Developer Ergonomics 10.3 / 15

Access Clarity 12.6 / 15

Operational Transparency 2.6 / 10

Contract Governance 1.6 / 9

Discoverability 5.4 / 8

Regulatory Posture 3.4 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 43/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

5 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 57.7 — up to +10.6 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Operational Transparency scores 26.3 — up to +9.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/sail-research/apis.yml: open an issue on github.com/api-evangelist/sail-research to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

The Anthropic Messages Dialect reaches extended

declared — publishes a spec that declares them

2 core of 244 operations graded · api-commons/models

The OpenAI Interface reaches extended

declared — publishes a spec that declares them

2 core of 338 operations graded · api-commons/models

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

APIs 5

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

Sail Research Batches API

Submit and manage batches of requests.

Sail Research Chat Completions API

OpenAI-compatible Chat Completions API endpoints.

Sail Research Messages API

Anthropic-compatible Messages API endpoints.

Sail Research Models API

Model discovery endpoints.

Sail Research Responses API

OpenAI-compatible Responses API endpoints.

Open Collections 5

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

Sail Batches API API

OPEN COLLECTION

Sail Batches API Chat Completions API API

OPEN COLLECTION

Sail Batches API Messages API API

OPEN COLLECTION

Sail Batches API Models API API

OPEN COLLECTION

Sail Batches API Responses API API

OPEN COLLECTION

MCP Servers 1

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

Sail Research MCP Server

Sail's hosted documentation MCP server. Connects agents/IDEs to Sail's docs so they can answer questions about models, pricing, completion windows, Sailbox setup and execution, ...

MCP SERVER

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Call Sail with the Anthropic Messages API

AGENT SKILL

Run batch inference at scale on Sail

AGENT SKILL

Run a background agent response on Sail

AGENT SKILL

Sail Research API pricing

Prices published by Sail Research, read 2026-10-07 from docs.sailresearch.com/pricing. A free plan or tier is listed.

Plan	Price
Free	Free to start, pay-as-you-go Includes: $5/month in free credits when you attach a payment method; Up to 4 seats; Up to 100 concurrent Sailb
Pro	$250/month Includes: $100/month in included credits, with an additional $150 in your first month; Unlimited seats; Up to
Enterprise	Custom Includes: Volume pricing, billed monthly in arrears
Kimi K3 (Default ASAP) input	$2.50 per 1M input tokens
Kimi K3 (Default ASAP) output	$12.50 per 1M output tokens
Sailbox vCPU/hour	$0.015
Sailbox RAM	$0.008

Plan details, limits and sources →

Billed by: 1m input tokens · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Sail Research Plans Pricing

7 plans

PLANS

Sail Research Price Estimates

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Sail Research

SLA

FinOps 1

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

Sail Research Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Sail Research Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Sail Research API Rules

60 rules · 53 errors 3 warnings 4 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Sail Research Openapi Overlay

2 actions · update · sail-research-openapi-original.json

DERIVED

Security Posture 2

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

Sail Research Authentication

http · 1 scheme

SECURITY

Sail Research Domain Security

TLSv1.2 · DMARC

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

MCPServer

MCPServer

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

Webhooks

DataModel

Scroll for all 7

Build 5

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: sail-research
name: Sail Research
description: 'Sail Research provides infrastructure for long-horizon agents: cost-efficient inference for leading open-source
  models (GLM, DeepSeek, Kimi, Nemotron and others) run on demand. Its API is OpenAI- and Anthropic-compatible (Chat Completions,
  Responses, Messages, Batches), so existing clients migrate by changing the base URL and key. Completion windows (asap/priority/standard/flex)
  trade latency for lower per-token price for background and agentic workloads, and Sailboxes provide full persistent VMs
  for long-running agents. Sail raised $80M and is backed by Kleiner Perkins. This profile was enriched by the API Evangelist
  pipeline from Sail''s public OpenAPI, docs, SDKs, CLI, and MCP surface.'
url: https://raw.githubusercontent.com/api-evangelist/sail-research/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- kleiner-perkins
x-tier: enriched
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-09-16'
image: https://www.sailresearch.com/og-image.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
x-docs-hosting: vercel
tags:
- Company
- Artificial Intelligence
- LLM
- Inference
- Agents
- Machine Learning
- Developer Tools
- Open Source Models
- Infrastructure
tags_raw:
- Company
- Artificial Intelligence
- LLM
- Inference
- Agents
- Machine Learning
- Developer Tools
- Machine-Learning
- Open Source Models
- Infrastructure
apis:
- aid: sail-research:sail-research-batches-api-api
  name: Sail Research Batches API
  description: Submit and manage batches of requests.
  humanURL: https://docs.sailresearch.com
  baseURL: https://api.sailresearch.com/v1
  tags:
  - Batches API
  properties:
  - type: OpenAPI
    url: openapi/sail-research-batches-api-api-openapi.yml
  - type: Documentation
    url: https://docs.sailresearch.com
  - type: APIReference
    url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
  - type: GettingStarted
    url: https://docs.sailresearch.com/quickstart
- aid: sail-research:sail-research-chat-completions-api-api
  name: Sail Research Chat Completions API
  description: OpenAI-compatible Chat Completions API endpoints.
  humanURL: https://docs.sailresearch.com
  baseURL: https://api.sailresearch.com/v1
  tags:
  - Chat Completions API
  properties:
  - type: OpenAPI
    url: openapi/sail-research-chat-completions-api-api-openapi.yml
  - type: Documentation
    url: https://docs.sailresearch.com
  - type: APIReference
    url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
  - type: GettingStarted
    url: https://docs.sailresearch.com/quickstart
- aid: sail-research:sail-research-messages-api-api
  name: Sail Research Messages API
  description: Anthropic-compatible Messages API endpoints.
  humanURL: https://docs.sailresearch.com
  baseURL: https://api.sailresearch.com/v1
  tags:
  - Messages API
  properties:
  - type: OpenAPI
    url: openapi/sail-research-messages-api-api-openapi.yml
  - type: Documentation
    url: https://docs.sailresearch.com
  - type: APIReference
    url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
  - type: GettingStarted
    url: https://docs.sailresearch.com/quickstart
- aid: sail-research:sail-research-models-api-api
  name: Sail Research Models API
  description: Model discovery endpoints.
  humanURL: https://docs.sailresearch.com
  baseURL: https://api.sailresearch.com/v1
  tags:
  - Models API
  properties:
  - type: OpenAPI
    url: openapi/sail-research-models-api-api-openapi.yml
  - type: Documentation
    url: https://docs.sailresearch.com
  - type: APIReference
    url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
  - type: GettingStarted
    url: https://docs.sailresearch.com/quickstart
- aid: sail-research:sail-research-responses-api-api
  name: Sail Research Responses API
  description: OpenAI-compatible Responses API endpoints.
  humanURL: https://docs.sailresearch.com
  baseURL: https://api.sailresearch.com/v1
  tags:
  - Responses API
  properties:
  - type: OpenAPI
    url: openapi/sail-research-responses-api-api-openapi.yml
  - type: Documentation
    url: https://docs.sailresearch.com
  - type: APIReference
    url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
  - type: GettingStarted
    url: https://docs.sailresearch.com/quickstart
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/sail-research-plans-pricing.yml
- type: CapabilityMap
  url: capabilities/sail-research-capability-edges.yml
  name: Sail Research Business Capability Map
- type: Website
  url: https://www.sailresearch.com/
- type: DeveloperPortal
  url: https://docs.sailresearch.com
- type: Documentation
  url: https://docs.sailresearch.com
- type: APIReference
  url: https://docs.sailresearch.com/api-reference/chat-completions-api/create-a-chat-completion
- type: GettingStarted
  url: https://docs.sailresearch.com/quickstart
- type: Pricing
  url: https://docs.sailresearch.com/pricing
- type: SignUp
  url: https://app.sailresearch.com
- type: TermsOfService
  url: https://www.sailresearch.com/terms
- type: PrivacyPolicy
  url: https://www.sailresearch.com/privacy
- type: Blog
  url: https://www.sailresearch.com/blog
- type: GitHubOrganization
  url: https://github.com/sailresearch
- type: StatusPage
  url: https://status.sailresearch.com
- type: TrustCenter
  url: https://trust.sailresearch.com
- type: OpenAPI
  url: openapi/_original/sail-research-openapi-original.json
- type: Authentication
  url: authentication/sail-research-authentication.yml
- type: DomainSecurity
  url: security/sail-research-domain-security.yml
- type: LLMsTxt
  url: llms/sail-research-llms.txt
- type: MCPServer
  url: mcp/sail-research-mcp.yml
- type: Packages
  url: packages/sail-research-packages.yml
- type: SDKs
  url: packages/sail-research-packages.yml
- type: CLI
  url: cli/sail-research-cli.yml
- type: Conventions
  url: conventions/sail-research-conventions.yml
- type: Idempotency
  url: conventions/sail-research-conventions.yml
- type: ErrorCatalog
  url: errors/sail-research-problem-types.yml
- type: Lifecycle
  url: lifecycle/sail-research-lifecycle.yml
- type: Conformance
  url: conformance/sail-research-conformance.yml
- type: Webhooks
  url: asyncapi/sail-research-webhooks.yml
- type: DataModel
  url: data-model/sail-research-data-model.yml
- type: Overlay
  url: overlays/sail-research-openapi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: GitHubOrganization
  url: https://github.com/sailresearchco
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 15
  pass: local-v1

Sail Research API — frequently asked questions

Does Sail Research have an API?

Yes. APIs.io lists 5 APIs from Sail Research, including Sail Research Batches API, Sail Research Chat Completions API and Sail Research Messages API, and 2 more.

Is there an OpenAPI specification for the Sail Research API?

Yes. APIs.io indexes 5 OpenAPI specifications for Sail Research, each linked for download from this page.

How do I authenticate with the Sail Research API?

Sail Research uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Sail Research Authentication.

How much does the Sail Research API cost?

Sail Research publishes its prices; its Free plan is Free to start, pay-as-you-go as of 2026-10-07. APIs.io lists 7 pricing plans for Sail Research, with each plan's price, limits and inclusions under Pricing on this page.

Does Sail Research have an MCP server?

Yes. APIs.io lists 1 MCP server for Sail Research: Sail's hosted documentation MCP server. Connects agents/IDEs to Sail's docs so they can answer questions about models, pricing, completion windows, Sailbox setup and execution, and the platform in gen

Is the Sail Research API ready for AI agents?

Sail Research has a Kin Score of 58.2 out of 100 (strong) and an Agent Readiness score of 42.9 (agent-native), scored by API Evangelist on 2026-11-06.

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