The 12 closest competitors and alternatives to Composo among artificial intelligence companies — ranked by similarity to what Composo actually does, not by market-cap band.
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Composo is a deep tech and B2B artificial intelligence startup founded in 2023 and headquartered in London, United Kingdom, helping teams ship AI features and agents quickly and with high confidence.
Composo is an artificial intelligence company headquartered in United Kingdom. Its most recent funding round, Series B, raised $2M in February 2025. Xcout tracks 6 named people at Composo, including Seb Fox (CEO & Co-founder).
Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series B | $2M | 14 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Ranked by semantic similarity — how close each company is to Composo by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
AI/ML
Letta is an AI company developing infrastructure and tools for building stateful, persistent AI agents, including the open-source Letta framework formerly known as MemGPT. It serves developers and organizations building agents that can maintain memory, manage context, and operate over extended interactions.
Similar artificial intelligence company
Composabl is an enterprise software company headquartered in San Francisco, California, that provides a workbench and platform for engineers to build, train, and deploy autonomous multi-agent artificial intelligence systems.
AI/ML
Duku AI is a London-based deep-tech startup founded in 2025 that develops an autonomous testing platform and product verification infrastructure for AI code. The company utilizes intelligent AI agents to automate software testing processes, simulate real user journeys, and self-heal as codebases evolve.
AI/ML
Tessl AI Limited is an agent enablement platform registered in England and Wales, with its registered office located in London, UK. The company focuses on AI engineering, featuring its Tessl Agent in discussions and demonstrations.
AI/ML
CrewAI is a technology company that simplifies the agent production process for AI builders and leaders. It enables users to build and scale crews of AI agents. The company aims to provide control for enterprises in their AI agent development.
AI/ML
Bryel is a Y Combinator-backed artificial intelligence company focused on building intelligent agents and post-training infrastructure capable of automating complex business workflows.
AI
Lyzr is a privately held enterprise AI company that provides a platform and expertise for deploying governed AI agents at scale. The company focuses on solving real-world customer problems by helping enterprises move AI projects from development into production.
AI/ML
Mistral develops frontier artificial intelligence models, software agents, and enterprise infrastructure for organizations across various industries. The company provides tools and services for building, training, customizing, and deploying AI applications and autonomous agents.
AI/ML
LangChain is a company co-founded by Harrison and Ankush Gola, headquartered in San Francisco, California, with additional offices in New York and Boston. It focuses on agent engineering, aiming to make the company and its customers successful.
Similar artificial intelligence company
ChipStack is an AI-driven semiconductor verification company headquartered in Campbell, California. Founded in 2023, it delivers advanced agentic AI products for chip design workflows.
AI/ML
Sapiom is a San Francisco-based software company founded in 2025 that develops infrastructure and financial layers for AI agents. The company provides tools and APIs for identity, wallets, policy, risk, and settlement, enabling AI agents to securely purchase and access software, APIs, data, and other tools.
AI/ML
Thread AI provides an AI orchestration infrastructure platform called Lemma, which helps Fortune 500 companies and public sector agencies build, deploy, and govern production-ready AI agents and workflows. The platform serves regulated industries by automating mission-critical business processes while offering control, traceability, and reliability features such as audit trails, human-in-the-loop oversight, and security compliance.
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