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Inference API
Inference API

Sail Research› offers Inference API

ServiceOperating Status: Currently Offered

Async inference API for long-horizon AI agents, serving leading open-source models through OpenAI- and Anthropic-compatible endpoints.

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Overview

Sail's inference API runs leading open-source models behind OpenAI- and Anthropic-compatible Responses, Chat Completions, and Messages endpoints, so existing agent code can migrate with minimal change. A per-request completion window lets callers trade response latency for token price, with background tiers priced well below immediate-response options.

Self-serve users start with monthly free credits and prepaid usage-based billing, while enterprise customers contract for volume pricing, HIPAA-region isolation, and uptime SLAs. The platform targets asynchronous, long-running agent workloads such as deep research, code review, and evaluation pipelines.

Inference API - Classification

Technology
  • AI Machine Learning
Model
  • AI Platform
Revenue
  • Usage-based

More from Sail Research

  • Sailboxes logo

    Sailboxes

Inference API - Direct Competitors

  • Tracer

    Tracer logo

    Echo

    tracerml.ai

  • Fireworks AI

    Fireworks AI logo

    Fireworks AI Inference

    fireworks.ai

  • Together AI

    Together AI logo

    Together AI Inference

    together.ai

AttributeInference APIEchoFireworks AI InferenceTogether AI Inference
ProviderSail Researchsailresearch.com80M raised · SeedTracertracerml.ai500k raised · SeedFireworks AIfireworks.ai327M raised · Series CTogether AItogether.ai1.2B raised · Series C
Founded2026202620222022
Sells ToDevelopers, EnterpriseEnterpriseEnterpriseEnterprise
Pricing ModelUsage-basedB2B SubscriptionRecurringRecurring
OwnershipVenture-backed private companyPrivateVenture CapitalVenture Capital
Inference API

Provider Sail Researchsailresearch.com80M raised · Seed

Founded 2026

Sells To Developers, Enterprise

Pricing Model Usage-based

Ownership Venture-backed private company

Echo

Provider Tracertracerml.ai500k raised · Seed

Founded 2026

Sells To Enterprise

Pricing Model B2B Subscription

Ownership Private

Fireworks AI Inference

Provider Fireworks AIfireworks.ai327M raised · Series C

Founded 2022

Sells To Enterprise

Pricing Model Recurring

Ownership Venture Capital

Together AI Inference

Provider Together AItogether.ai1.2B raised · Series C

Founded 2022

Sells To Enterprise

Pricing Model Recurring

Ownership Venture Capital

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