Who's Building AI?

OpenAI is an AI research and deployment company building toward AGI for the benefit of humanity. Now a Public Benefit Corporation (PBC). Developer of the GPT and o-series models, ChatGPT (1B+ WAU), GPT Image 2, Sora, and Codex coding agent. The $852B valuation funding round (Mar 2026) is the largest private fundraise in history.

Anthropic is an AI safety company building the Claude model family. With $965B near-trillion valuation (2026), $45B ARR, and a confidential IPO filing (Jun 2026), Anthropic has become the fastest-growing AI company in history. Claude Opus 4.8 (May 2026) is the current frontier flagship. Amazon has committed $33B+ total, including $25B in Apr 2026 for 5GW of compute. Claude Code hit $2.5B annualized ARR.

Google DeepMind is the unified AI research arm of Alphabet, combining Google Brain and DeepMind. Pioneers in reinforcement learning, protein folding, and multimodal AI.

Meta AI is Meta's artificial intelligence research division. Champions open-source AI with the Llama model family and conducts fundamental research in NLP, computer vision, and robotics.

Microsoft has made AI central to its business strategy through a multi-billion dollar partnership with OpenAI. Integrates AI across Azure, Office 365, Bing, and GitHub with Copilot products.

Hugging Face is the leading open-source AI platform, hosting 500,000+ models and 100,000+ datasets. The Transformers library powers much of the modern NLP ecosystem.

Mistral AI is a European AI startup building highly efficient open and commercial language models. Their models achieve competitive performance at significantly smaller parameter counts.

Stability AI is the company behind Stable Diffusion, the open-source image generation model that democratized AI art creation. Also develops models for audio, video, and code.

Cohere provides enterprise-focused NLP APIs for search, classification, summarization, and generation. Strong in retrieval augmented generation (RAG) and enterprise deployments with on-prem options.

Runway is a creative AI company building next-generation video generation and editing tools. Their Gen-2 and Gen-3 models enable text-to-video and video-to-video transformations of cinematic quality.

ElevenLabs develops the most realistic AI voice synthesis technology available. Their models capture emotional nuance, accent, and prosody at a level indistinguishable from humans.

Perplexity AI is building a new kind of search engine that combines LLMs with real-time web search to provide cited, accurate answers. Used by researchers, journalists, and knowledge workers.

Scale AI provides data labeling and synthetic data infrastructure that powers AI training for leading frontier labs and enterprises. The 'picks and shovels' of the AI gold rush.

Together AI provides fast, affordable inference and training infrastructure for open-source AI models. Hit $1B annualized run rate Feb 2026. Targeting $7.5B valuation in new ~$1B funding round (Mar 2026). Own data center in Maryland live since Jul 2025.

Inflection AI was co-founded by Mustafa Suleyman and developed Pi, a personal AI focused on emotional intelligence and supportive conversation. Most of the team joined Microsoft AI in 2024.

xAI is now the AI division of SpaceX after the largest merger in history (Feb 2026, $1.25T combined entity). Develops the Grok model family with real-time X data access. Grok 4 (Jul 2025) and Grok 4.3 (Apr 2026) are current frontier models. Colossus supercluster (220K+ GPUs) leased entirely to Anthropic in May 2026 after xAI migrated to Colossus 2.

Midjourney is an independent research lab that produces an AI image synthesis service with a distinctive, highly aesthetic output style. Operated primarily through Discord, it has become the most widely recognized AI art generation tool among creatives.

Pika Labs is an AI video generation startup that enables anyone to create and edit video content from text prompts. Their Pika 1.0 model democratized AI video creation with an accessible interface and quality results.

Synthesia is an enterprise AI video platform that enables organizations to create professional videos with AI-generated presenters in 130+ languages without cameras, studios, or actors.

HeyGen is an AI video platform enabling businesses to create personalized videos with realistic AI avatars and voice cloning. Their video translation feature can dub content into multiple languages while preserving the speaker's voice and lip movements.

Groq is a chip startup that has developed the Language Processing Unit (LPU), custom silicon designed specifically for LLM inference. Their hardware delivers inference speeds 10-25x faster than GPU-based alternatives.

Cerebras Systems builds the world's largest computer chips - the Wafer Scale Engine (WSE) - designed specifically for AI training and inference.

AI21 Labs is an Israeli AI research company developing large language models and enterprise NLP tools. Creator of Jamba, the first production-grade hybrid SSM-Transformer model.

Character.AI is a conversational AI platform for AI personas of celebrities and fictional characters. Underwent a major restructuring in Aug 2024 when Google completed a 'reverse acquihire' - founders Noam Shazeer and Daniel De Freitas (+ 24 researchers) returned to Google DeepMind. Character.AI continues operating independently but faces steep competition and declining user growth.

Replicate is a cloud platform that makes it easy to run machine learning models with a single API call. Hosts thousands of open-source models with pay-per-prediction pricing.

Weights & Biases (W&B) is the leading MLOps platform for tracking experiments, visualizing model performance, and managing the machine learning lifecycle.

Pinecone is the leading managed vector database company, providing production-ready infrastructure for similarity search at scale.

Aleph Alpha is Germany's leading AI company developing sovereign AI infrastructure for European enterprises and governments.

Moonshot AI is a Chinese AI startup developing the Kimi family of large language models with an emphasis on extremely long context windows.

Zhipu AI is a leading Chinese AI company and developer of the GLM series of bilingual language models. A spin-off from Tsinghua University's KEG lab.

01.AI is a Chinese AI company founded by Kai-Fu Lee, developing the Yi series of open-source large language models globally competitive in performance.

SambaNova Systems designs AI accelerator hardware and full-stack AI platforms for enterprise and national lab deployments.

Adept AI is building AI agents that can take actions in software on behalf of users. Their Fuyu-Heavy model and ACT agent are designed to interact with existing software interfaces.

DeepSeek AI is a Chinese AI research lab founded by quantitative hedge fund High-Flyer Capital that shocked the global AI industry in January 2025 by releasing open-source models (DeepSeek R1, V3) that match GPT-4-class performance at a fraction of the training cost. Their work demonstrated that frontier AI is achievable with far less compute than previously assumed.

Apple is a $3.5T+ technology conglomerate whose AI strategy centres on on-device intelligence, privacy-preserving Personal Intelligence, and deep ecosystem integration across iPhone, Mac, iPad, Apple Watch, and Vision Pro. Apple Intelligence (launched iOS 18.1, Oct 2024) uses on-device models and Private Cloud Compute to deliver AI features without sending data to the cloud.

Amazon Web Services is the world's leading cloud platform and a pivotal force in enterprise AI infrastructure. Through Amazon Bedrock (multi-model AI API), Amazon SageMaker (end-to-end ML platform), Amazon Q (enterprise AI assistant), and Amazon Nova models, AWS enables tens of thousands of enterprises to build and deploy AI at scale. Amazon has also committed $8B+ to Anthropic.

Baidu is China's dominant internet search company and one of the country's leading AI companies, investing heavily since 2010. ERNIE Bot (文心一言) — its LLM and AI assistant — had 200M+ registered users by 2025. Baidu's Qianfan platform provides enterprise AI APIs and its Apollo self-driving division is among China's most advanced autonomous vehicle programmes.

Kuaishou is China's second-largest short video platform and the company behind Kling AI, one of the world's most capable text-to-video generation models. Kling 2.0 Master ranked #1 on EvalCrafter video benchmarks in 2025, supporting up to 3-minute high-fidelity videos. Kuaishou also operates Kwai internationally.

Codeium built the AI coding assistant Codeium and the agentic IDE Windsurf. Known for its generous free tier and fast autocomplete, Codeium grew to 800,000+ developers before OpenAI acquired the company for $3B in June 2025 — marking one of the largest AI acquisitions. Windsurf's Cascade agent autonomously edits code across entire repositories.

Anysphere is the company behind Cursor, the AI-first code editor that became the fastest-growing developer tool in history. Cursor is a fork of VS Code with native multi-model AI capabilities (Claude, GPT-4, Gemini), full codebase context, agentic multi-file editing, and background agents. It reached $3B ARR by April 2026, with 64% of Fortune 500 companies adopting it. The company is in valuation discussions at $50B as of June 2026.

Black Forest Labs is the company behind FLUX, the state-of-the-art text-to-image model family. Founded by the original creators of Stable Diffusion (Robin Rombach and team from CompVis/Stability AI), FLUX.1 Pro and FLUX 1.1 Pro Ultra (4MP) set the benchmark for photorealism and prompt accuracy in 2024-2025. The open-weights FLUX.1 [schnell] and [dev] variants became the most widely adopted open-source image generation models post-Stable Diffusion.

Suno is the leading AI music generation company, enabling anyone to create full songs with vocals, instruments, and production quality from a text prompt. Suno v5.5 (March 2026) delivers radio-quality music across all genres. With $400M raised at a $5.4B valuation (June 2026) and $100M+ ARR, Suno is the dominant consumer AI music platform. The company faces ongoing litigation from major record labels (UMG, Sony) though Warner Music settled.

Cognition AI is the developer of Devin, the world's first AI software engineer agent capable of autonomously completing complex engineering tasks end-to-end. Devin 2.0 (March 2025) dramatically reduced pricing from $500 to $20/month. Cognition also acquired Windsurf (Codeium IDE) for ~$250M in December 2025 and merged it into Devin Desktop. The company is valued at $4B and counts Goldman Sachs among its pilot customers.

Vercel is the platform for frontend developers, enabling teams to deploy web applications with zero configuration. In the AI era, Vercel launched v0 (AI UI component generator, September 2023) which became the leading design-to-code tool. Vercel also develops the AI SDK (open-source toolkit for building AI-powered applications with React/Next.js) and Next.js, the most widely deployed React framework. Valued at $3.25B, Vercel powers 3M+ projects.

StackBlitz is the company behind Bolt.new and WebContainers technology, which enables running full Node.js environments directly in the browser. Bolt.new (launched September 2024) became the fastest-growing AI development tool, enabling anyone to build and deploy full-stack web applications from a single text prompt in a browser — no local setup required. Bolt.new reached 1M+ monthly active users by December 2024.

NVIDIA is the dominant designer of GPUs and AI accelerators. Its data-center GPUs (A100, H100, H200, and the Blackwell B200/GB200) together with the CUDA software platform power the majority of the world's AI training and inference, making NVIDIA the foundational infrastructure provider of the modern AI era. Beyond silicon, NVIDIA ships full-stack AI software including NVIDIA AI Enterprise, NIM microservices, TensorRT, and the Omniverse simulation platform.

Writer is an enterprise-grade AI platform purpose-built for large organisations, offering custom LLMs (the Palmyra series), a full-stack AI application builder, RAG over enterprise knowledge, and a governed AI writing assistant. Unlike generic tools, Writer is built for compliance, brand consistency, and enterprise security, serving customers like Salesforce, Verizon, Intuit, and L'Oréal.

Harvey is an AI platform built specifically for law firms and legal departments, using fine-tuned LLMs to assist with legal research, contract analysis, due diligence, litigation drafting, and regulatory compliance. Backed by OpenAI and top law firm investors, Harvey is the leading AI platform for the legal industry, with clients including Allen & Overy, PwC, and the US Air Force legal department.

Twelve Labs builds multimodal video understanding AI that can search, analyze, and extract information from video content semantically — not just via transcription. Its Marengo and Pegasus model families enable developers to build apps that understand what happens in video, who appears, what is said, and the mood or context, all through a developer-friendly API.

Poolside is an AI company focused exclusively on building the world's best AI for software engineering. Using reinforcement learning from code execution (not just human feedback), Poolside trains models that understand software at a deep level. Its Malibu and Point models are available via API and are designed for agentic coding workflows, with Fortune 500 and developer-tool company customers.

CoreWeave is the leading specialised cloud provider for AI/GPU workloads, operating over 250,000 NVIDIA GPUs across 32 data centres. Originally a crypto mining company, it pivoted to GPU cloud in 2019 and rode the AI training boom to become one of the fastest-growing cloud infrastructure companies ever. CoreWeave completed a $23B IPO in March 2025 — the largest US tech IPO since Arm Holdings. Customers include Microsoft, Cohere, OpenAI (via Stargate), and IBM. It acquired Weights & Biases for $1.7B in July 2025 to add ML observability to its stack.

Databricks is the leading unified data analytics and AI platform, combining big data processing (based on Apache Spark) with machine learning, LLM fine-tuning, and governance. Founded by the creators of Apache Spark, Delta Lake, and MLflow, Databricks serves 10,000+ enterprises worldwide. Their open-source DBRX (March 2024) set a new benchmark for open-weight MoE models at launch. At a $62B valuation (Dec 2024), Databricks is one of the most valuable private software companies in the world.

Luma AI is a multimodal AI company best known for Dream Machine, a state-of-the-art text-to-video and image-to-video model, and NeRF-based 3D capture technology. Dream Machine (June 2024) generates high-quality, cinematic videos from text or images in seconds and rapidly became one of the top consumer video AI tools. Luma also develops AI for 3D scene reconstruction (Luma NeRF) used in film, AR/VR, and e-commerce.

Fireworks AI is a high-performance AI inference platform that serves open-source frontier models — including Llama 4, DeepSeek R1, Qwen, Mixtral, and FireFunction — at industry-leading speed and cost. Founded by ex-Google Brain researchers, Fireworks specialises in inference optimisation with custom CUDA kernels, speculative decoding, and multi-GPU orchestration, delivering latency benchmarks that consistently beat AWS, Azure, and Together AI. Its FireFunction V2 model leads tool-calling benchmarks.

Modal is a serverless cloud platform built specifically for AI and ML workloads. Developers define Python functions with decorators and Modal handles GPU provisioning, container building, scaling, and scheduling automatically. There is no infrastructure to manage — an LLM fine-tuning job or a diffusion model inference endpoint can be deployed in minutes. Modal is especially popular for running batch AI jobs, hosting ML model APIs, and fine-tuning open-source models without DevOps overhead.

Ideogram is an AI image generation startup that broke out in 2024 by solving a long-standing problem: accurate, stylistically rich text rendering within generated images. Ideogram 2.0 (Feb 2025) and Ideogram 3.0 (2025) produce photorealistic images and typography-heavy designs (posters, logos, social graphics) with unprecedented legibility. Its Magic Fill and Edit features allow targeted inpainting. Ideogram's API is used by Canva, Adobe, and other creative platforms.

Lightricks is an Israeli AI creative technology company best known for its consumer apps (Facetune, LightLeap, Videoleap) and for LTX Video — one of the fastest open-source text-to-video diffusion models, capable of generating high-quality video in real time. LTX-Video (Nov 2024) was released open-source on Hugging Face and became one of the most-downloaded video generation models. Lightricks also runs the B-Roll AI stock video platform and offers an enterprise AI content generation API.

Lambda Labs is an AI cloud computing company providing on-demand and reserved GPU instances for AI training and inference. Its Lambda Cloud offers H100, A100, and H200 clusters with competitive pricing specifically targeting AI/ML workloads. Lambda also sells Lambda Workstations and Lambda Blade servers for on-premise GPU computing. It is a preferred GPU cloud for AI researchers, startups, and enterprises who need flexible access to NVIDIA accelerators without long-term commitments.

Replit is a cloud-based collaborative coding platform and AI agent that lets anyone build, run, and deploy software from a browser. The Replit Agent can build complete applications from natural language descriptions across 50+ programming languages. With 30M+ registered developers and a $1.16B valuation, Replit is a leader in AI-assisted software development education and rapid prototyping.

Notion is an all-in-one workspace that combines notes, wikis, databases, and project management into a single flexible platform. Notion AI (launched 2023) adds LLM-powered writing, summarization, Q&A across pages, and database autofill. With 30M+ users and a $10B valuation, Notion is the leading productivity and knowledge management platform for teams.

Ideogram is an AI image generation startup founded by former Google Brain researchers, best known for industry-leading text rendering in generated images. Ideogram 3.0 (2025) rivals Midjourney v7 on photorealism while leading on typography accuracy. Backed by $230M in funding at a $700M+ valuation.