ModelBest

Develops large language models and software that make it easier for companies to build AI applications

Undisclosed · $450M · 2024-11

Building the FLUX family of foundation models for image generation and editing

Series B · $331M · 2025-12

High-reliability AI agent models (APT) for high-stakes enterprise scenarios.

Series A · $100M · 2026-06 · Valuation $750M

Development of the GLM series of foundation models and ToC/ToB large model services

IPO · $2.2B · 2026-01

Open-source large language model development and API/agent services

Series A · $7.2B · 2026-06 · Valuation $56B

Native multimodal large models under the diffusion paradigm, with real-time interactive content as the core application; product lineup covers emotional companionship, interactive content, an AI character community and immersive virtual experiences. Has open-sourced LLaDA 2.2, a 100-billion-parameter MoE diffusion language model.

Series B+ · 2026-08

Develops AI large language models based on European data

Undisclosed · $500M · 2024-09

Computer-use AI agent platform for large European enterprises. Its core Holo model series can operate existing software interfaces directly to automate business processes; the company also offers an Agents API, a Models API and the Chrome extension HoloTab.

Seed · $220M · 2024-05

AI world model R&D: simulating and predicting physical-world behavior for robotics simulation and interactive 3D environments

Provides developers with customized text-based business applications built on AI21's proprietary AI models

Series D+ · $508M · 2025-05 · Valuation $1.4B

Builds large language models that support Indian languages

Series B · $275M · 2026-06 · Valuation $1.5B

Biologically inspired, efficient AI systems and models (including methods such as "model merging")

Series B · $265M · 2025-11