Back to vendors
T

Thread AI

Also known as: Lemma

Visit site
Entry priceNot public; book a demoFull pricing detail

Lemma: AI orchestration infrastructure for durable, governed agent workflows, with human handoff states, a function registry, scheduled and streaming triggers, identity provider access control, and VPC or on-premises deployment.

Thread AI, based in New York, builds Lemma, AI orchestration infrastructure for building and running proprietary agents and workflows in core enterprise and public sector operations, where a failed run has real business consequences. Its framing is controlled autonomy: agents act only within boundaries the organization defines, every decision is recorded, and execution is durable.

In Lemma, a Worker is a versioned, immutable workflow made of States: calls to Functions, branching, parallel steps, loops, waits for incoming signals, and Handoffs that pause a run for a person to review, approve or add input, notified by SMS, WhatsApp, email or webhook.

Functions are authenticated REST or gRPC calls kept in a Function Registry, including predefined model Functions, with retry policies, timeouts and fallback to a backup provider; Connections pull data from databases and APIs on a schedule or as a stream and start runs automatically; Secrets hold credentials; and each run keeps its own context of every step's inputs and outputs. Builders work in a drag-and-drop builder, a code-first SDK or REST, gRPC and GraphQL APIs, and every published Worker runs from its own endpoint.

Lemma integrates with the customer's identity provider and existing groups and permissions, manages non-human identity permissions, redacts personal data, and states SOC 2 Type 2, HIPAA, GDPR and CJIS compliance, with a trust center linked from its site. It deploys in the customer's VPC, on premises or as multi-tenant SaaS. Pricing is not published; Lemma is sold through enterprise engagement.

Vendor details

Canonical URL

https://www.threadai.com

Category

Agent infrastructure

Subcategory

Composable AI orchestration platform

Funding status

Independent, based in New York, founded in 2023 by former Palantir engineers Angela McNeal and Mayada Gonimah. Thread AI raised a Series A from investors including Index Ventures, Greycroft, Meritech Capital, and Homebrew, with earlier backing from Plug and Play. Its founders bring deep enterprise systems experience, and the company positions Lemma as composable AI infrastructure for enterprises and public agencies running agentic workflows in regulated, mission critical operations.

Company status

independent

Use cases & customers

Primary use cases

agentic workflow orchestrationback office process automationregulated and mission critical AI workflowsAI infrastructure and governance

Target customers

enterprises in regulated industriespublic sector and agenciesplatform and operations engineering teams

Deployment options

SaaSVPCon-premise

Integrations

Lemma embeds first and third party business logic directly into workflows through a Function Registry that imports existing API schemas over gRPC, OpenAPI, and soon GraphQL, avoiding brittle proxy layers, and connects to existing systems without replacing them. It integrates with identity providers to govern access using existing groups and permissions, and extends the CNCF Serverless Workflow specification with native AI tool calling.

In practice

Your team wants to bring AI into core financial or back office processes, but a wrong autonomous action has real consequences. Thread AI's Lemma makes each step explicit, adds human in the loop checks, and can compensate to undo a decision cleanly.

Stitching agents together with brittle glue code and proxy servers breaks in production and hides failures. Lemma imports your existing API schemas directly and runs stateful workflows that complete exactly once or roll back.

Regulated operations demand audit trails, traceability, and on premise control that most AI tools cannot offer. Thread AI deploys via virtual private cloud or on premise with SOC 2 Type 2, GDPR, and HIPAA and full observability on every run.

Agentic Index coverage score

11.0 / 14 capabilities · 79%

Integrations & Tool Calling Full

Functions make authenticated API calls over REST or gRPC with OAuth or API key schemes and versioned input and output schemas, kept in a Function Registry where they can be tested with sample data, alongside predefined Functions that need no setup; Connections pull records from databases and APIs such as Salesforce, Google Drive or Shopify using stored Secrets.

SourceThread AI, threadai.com/docs (Lemma Core Concepts)read 2026-09-21

Workflow Orchestration Full

A Worker is a versioned, immutable sequence of States, and States include Call, Switch for branching, Parallel, Do/While loops, ForEach in parallel or in sequence, Do/Listen and Handoff, each with a retry policy, timeouts and fallback Functions, combining deterministic Functions with LLM Functions in cyclic or acyclic workflows. The platform itself carries the branching, retries and routing across steps.

SourceThread AI, threadai.com/docs (Lemma Core Concepts)read 2026-09-21

Knowledge Grounding & RAG Partial

Connections sync data from sources such as Google Drive, Salesforce or Shopify into Workers, including a Worker that generates text embeddings, and Functions call the customer's own services, so the customer can assemble retrieval inside a workflow. No retrieval index or store that Lemma itself maintains over the customer's knowledge is documented.

SourceThread AI, threadai.com/docs and platformread 2026-09-21

Human Oversight & Guardrails Full

A Handoff State pauses a Run for human intervention at any point the builder places it, with preconfigured timeouts, and sends a Notification by SMS, WhatsApp, email or webhook; the person's reply resumes the Run with their input, and the builder chooses whether a reply from an outside channel can unpause it or whether sign-off must happen in the Lemma console. The homepage lists review queue and approve, reject or edit worker functions. So the buyer decides which steps need sign-off, who signs off and what happens on timeout.

SourceThread AI, threadai.com/docs and homepageread 2026-09-21

Security, Identity & Governance Full

Access to agents and resources is governed by integration with the customer's identity provider using its existing groups and permissions, with a management layer for non-human identity permissions and PII redaction at every level; Thread AI states SOC 2 Type 2, HIPAA, GDPR and CJIS on its homepage and platform page and links a trust center from its footer.

SourceThread AI, threadai.com homepage and platformread 2026-09-21

Observability & Auditability Full

Every agent decision is logged and traceable, every Worker is versioned and traced from its first deployment, and each Run's Context stores the inputs and outputs of every State, so system access, inputs and AI reasoning can be inspected run by run.

SourceThread AI, threadai.com platform, homepage and docsread 2026-09-21

Memory & State Persistence Partial

Each Run keeps its own Context, where the inputs and outputs of every State are stored and shared across that Run's steps, and the platform page describes a context layer embedded in and across workflows. No memory layer with a stated scope and lifetime beyond a single Run is documented.

SourceThread AI, threadai.com/docs and platformread 2026-09-21

Deployment & Data Residency Full

Lemma deploys in the customer's virtual private cloud, on premises or as multi-tenant SaaS, and the platform page describes it as agnostic to cloud provider across any topology or network.

SourceThread AI, threadai.com homepage and platformread 2026-09-21

Prebuilt Agents, Templates & Packs Partial

Templates are pre-defined Worker configurations for recurring patterns, such as agentic loops built from Do/While and ForEach States, available for use and customization with availability set per stack, and predefined Functions and shared building blocks can be reused across teams. These are patterns and components the customer assembles into its own Workers; no set of complete ready made workers a customer adopts is documented.

SourceThread AI, threadai.com/docs and homepageread 2026-09-21

Triggers & Channel Coverage Full

A Connection pulls data from a database or API on a preconfigured schedule or as a stream and starts a Run of its Worker whenever new data arrives, a Do/Listen State waits for incoming signals, and every published Worker also runs from its own endpoint; streaming, batch and interactive execution are supported. Work therefore reaches the agent without a person initiating it.

SourceThread AI, threadai.com/docs and platformread 2026-09-21

Model Flexibility & Routing Full

Builders choose the model for each AI Function, from predefined Functions covering current models and models with compliance guarantees to any model API they register with their own credentials, and fallback Functions switch to a backup AI provider when the primary fails, with Thread-managed credentials configurable per tenant.

SourceThread AI, threadai.com/docs and platformread 2026-09-21

APIs, SDKs & MCP Extensibility Full

Lemma offers REST, gRPC, GraphQL and SFTP APIs, SDKs and embeddable white-label components, builders work through a code-first SDK or the APIs as well as the visual builder, and every published Worker is executable from its own endpoint. The full API reference sits behind the customer console.

SourceThread AI, threadai.com platform, homepage and docsread 2026-09-21

Testing, Debugging & Optimization Partial

The Function Registry tests a Function against sample input before it is added to a Worker, and the platform page describes experimenting, testing and iterating before deploying to production. No scored test cases, evaluation harness or quality gate returning a verdict on agent behavior is documented.

SourceThread AI, threadai.com/docs and platformread 2026-09-21

Browser & Computer Use Not documented

Lemma reaches systems through API Functions, Connections and SFTP, and no browser, desktop or computer control by an agent is documented.

SourceThread AI, threadai.com platform and docsread 2026-09-21

The Agentic Index coverage score grades every vendor Full, Partial or Not documented against the same 14 buyer facing capabilities, from public evidence only. Each capability links to how all vendors in the index score on it. How this evidence is graded

Pricing

Not public; book a demo

enterprise subscription scoped to workflows, usage, and deployment model

What is public

No list pricing. Thread AI sells Lemma through a demo and enterprise engagement; its documentation states that usage of Thread-managed credentials is billed within monthly usage pricing.

Billing mechanics

Enterprise agreement through Thread AI; usage of Thread-managed credentials is billed in monthly usage pricing. No rates are published.

Cost watchouts

Use of Thread-managed model and service credentials is billed within monthly usage pricing; on-premises or VPC deployments carry the customer's own infrastructure effort.

Variable cost rationale

Priced as an enterprise platform scoped to workflow volume, run activity, and the deployment model, so cost grows as more mission critical processes move onto the platform and with the level of data control required.

Additional watchouts

Confirm how pricing scales with workflow volume and usage, and how the on premise or virtual private cloud deployment options affect both cost and the operational burden on your team.

Sales call required

Yes, required for paid access

Free / trial

Demo and pilot on request; no public free tier

Commercial notes

Thread AI sells Lemma to enterprises and public sector agencies through a demo and sales engagement.

Key ambiguities

No rate, pricing unit or plan structure is published.

Missing data

Rates, pricing unit and plan structure are not published.

Agentic Index verified 2026-09-21

Alternatives to Thread AI

The closest documented capability profiles to Thread AI among agent infrastructure platforms tracked by Agentic Index, ordered by similarity on the same 14 point evidence the rankings use. No vendor pays for placement.

  • Netlify10.5 / 14A lighter documented profile than Thread AI
  • Sourcegraph11.0 / 14Fuller documented coverage on Knowledge Grounding & RAG
  • xpander.ai12.0 / 14Fuller documented coverage on Knowledge Grounding & RAG and Memory & State Persistence
  • Bernstein10.5 / 14Fuller documented coverage on Testing, Debugging & Optimization
  • Cartesia10.5 / 14Fuller documented coverage on Knowledge Grounding & RAG
  • Kestra12.5 / 14Fuller documented coverage on Knowledge Grounding & RAG and Memory & State Persistence

Similarity is computed from each vendor's Agentic Index coverage score evidence, axis by axis, not from the totals. How this evidence is graded

Contact us

Found a vendor we missed? Have feedback on the index? We'd love to hear from you.