AI Infrastructure & MLOps Open Source

iii

Three-primitives runtime for composable software and AI workers

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PricingOpen Source
Starting price$0
Free planYes
Free trialYes
APIYes
Open sourceYes
DeploymentSelf Hosted
Last verifiedAugust 2, 2026
Overview

Tool overview

iii is listed under AI Infrastructure & MLOps AI tools.

Summary

What is iii?

iii is a software runtime organized around workers, functions, and triggers. It lets TypeScript, Python, and Rust components discover and call one another through a shared engine with observability and reusable integrations.

Best fit

Best for

Engineering teams composing services and agent workers across languages

Audience

Who is it for?

Backend engineersPlatform teamsAI agent developersDeveloper tooling teams
Recommendation

Decision note

Accepted for Preview after independent V411 official-source research. Apply only after failures = 0, warnings = 0, unmapped = 0, and the proposed changes are reviewed.

Capabilities

Key features

Workers, functions, and triggers

TypeScript, Python, and Rust SDKs

Live discovery and shared observability

Composable integrations and agent workers

Workflows

Use cases

Building modular backends

Composing AI agent workers

Connecting services across languages

Tracing distributed function calls

Strengths

Pros

  • Official source repository
  • Small composable runtime model
  • Multi-language worker support
Considerations

Limitations

iii is a developer framework rather than a hosted no-code product. Teams must operate the runtime and dependencies, evaluate compatibility, and review its mixed engine and SDK licensing.

Cost

Pricing details

Pricing modelOpen Source
Starting price$0
Free planYes
Free trialYes
Pricing context

Billing options

Free self-hosted

Pricing context

Pricing note

The software can be downloaded and self-hosted without a subscription. Infrastructure, databases, queues, storage, networking, and model-provider usage remain separate costs.

View official pricing
Compatibility

Supported languages

  • English
Connectivity

Integrations

iii workers and integrations

Specs

Technical details

PlatformsWeb
Multilingual supportUnknown
Login requiredNo
Open sourceYes
LicenseElastic License 2.0 engine || Apache 2.0 SDK, CLI, console, and docs
DeploymentSelf Hosted
CompanyMotia LLC
Current version0.11
Models / versionsiii 0.11
Editions / plansSelf-hosted distribution
Data confidenceHigh
Last verifiedAugust 2, 2026
Documentation → Source code → Release notes → Data source →
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Answers

Frequently asked questions

iii is a software runtime organized around workers, functions, and triggers. It lets TypeScript, Python, and Rust components discover and call one another through a shared engine with observability and reusable integrations.
Engineering teams composing services and agent workers across languages
The listed pricing model for iii is Open Source. Pricing can change, so users should verify the latest plan details on the official website.
Yes. The current profile indicates that a free trial is available.
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