Ecosystem
Reference hubs for who builds AI and which models matter — companies and foundation models as first-class entities.
Research snapshot: Top Open-Source & Open-Weight AI Models 2026 →
- OpenAIOpenAI develops the GPT family of foundation models, ChatGPT, developer APIs, and enterprise AI platforms. It helped popularize large language models through ChatGPT and now powers AI assistants, coding tools, enterprise copilots, retrieval systems, and agent-based applications across industries.
- AnthropicAnthropic builds the Claude family of foundation models for enterprises that prioritize instruction following, long-context reasoning, coding quality, and predictable, safety-conscious behavior. Constitutional AI and careful system design are core to how Claude is trained and positioned.
- Google DeepMindGoogle combines frontier AI research (DeepMind), cloud infrastructure (Vertex AI), custom AI hardware (TPUs), and productivity products (Workspace, Android, Search), making it one of the most vertically integrated AI platforms. Gemini is the model layer; Google Cloud and consumer surfaces are the distribution layer.
- MetaMeta advances open multimodal research and releases the Llama open-weight model family used widely in self-hosted AI stacks. Muse Spark 1.3 (with Muse Code) is Meta’s paid Meta Model API path for agentic coding and multimodal agents. Combined with PyTorch, Llama still lets organizations train, fine-tune, and serve models without depending on a proprietary API.
Foundation Models
Canonical pages for major LLMs and multimodal models — linked to tools, benchmarks, and guides.
- GPT-5.6OpenAIOpenAI’s GPT-5.6 family (Sol flagship, Terra balanced, Luna cost-efficient) for complex reasoning, coding, multimodal understanding, and agentic tool use. The gpt-5.6 API alias routes to Sol.
- GPT-6 AstraOpenAIOpenAI’s GPT-6 Astra peak model (API id gpt-6-astra) for computer use, coding agents, professional artifacts, science, and cybersecurity-adjacent defender workflows. Launched 2026-09-03. ChatGPT Plus gets Astra in Work and Codex; Chat “GPT-6 Pro” is Pro/Business/Enterprise. GPT-5.6 Sol/Terra/Luna remain the volume and cost-routing family.
- Claude OpusAnthropicAnthropic’s Claude Opus 5 tier for complex agentic coding, enterprise work, long-context analysis, and careful instruction following. Claude Fable 5.1 sits above Opus for peak widely released capability.
- Claude SonnetAnthropicAnthropic’s Claude Sonnet 5 tier — best combination of speed and intelligence for most production agents and coding, at lower cost than Opus.
Landscapes
Graph-backed maps of foundation models, agent stacks, and vector/RAG tools from seed attributes and relationships.