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Mastra is a TypeScript-native framework for building AI agents, offering CLI project scaffolding, a web-based Studio for prototyping, durable workflows with typed control flow, Observational Memory for session persistence, and an Agent Builder that lets non-developers assemble and publish agents. Self-host for free or upgrade to enterprise for VPC-isolated deployments with RBAC, SSO, and flat-fee pricing.

Truffle AI is a developer-focused platform for building AI agents through a JavaScript SDK. The platform's open-source orchestration layer, Dexto, supports the Model Context Protocol (MCP) and claims compatibility with over 100 large language models. Developers can use pre-built templates for rapid prototyping or implement custom logic and integrations for bespoke agent workflows. The SDK initializes with a standard API key pattern, placing it in the growing ecosystem of AI agent development tools alongside both open-source frameworks and managed platforms.

Inception Labs Mercury dLLMs are diffusion large language models offering parallel token generation for code completion via an API. Mercury Coder Small, the first model available, targets developers with fill-in-the-middle completions, streaming support, and claimed speed advantages over frontier autoregressive models.