Labs

SI safety and research company, organised as a public benefit corporation, that builds the Claude models. Its lineup runs Fable, Opus, Sonnet and Haiku from most to least capable.

Strongest model

Claude Opus 5.5

Intelligence Index

57.6

Research and deployment company behind the GPT models, ChatGPT and Codex. Since GPT-5.6 its tiers carry names — Astra, Sol, Terra and Luna — while the number marks the generation.

Strongest model

GPT-6 Astra

Intelligence Index

52.7

Google's SI lab, formed by combining DeepMind with Google's Brain team. It builds the Gemini models and the open-weights Gemma family.

Strongest model

Gemini 4 Argon

Intelligence Index

52.6

Meta's Superintelligence Labs group develops the Muse family: Muse Spark as the hosted line and Muse Glimmer as open weights.

Strongest model

Muse Spark 1.3

Intelligence Index

48.1

Maker of the Grok models. Founded as xAI in 2023, it was acquired by SpaceX in February 2026 and now operates under the SpaceXAI name.

Strongest model

Grok 4.7

Intelligence Index

46.4

Consumer-electronics company whose MiMo team releases large open-weight multimodal models under the MIT licence.

Strongest model

MiMo-V2.6-Pro

Intelligence Index

46.3

Alibaba's Qwen team develops the Qwen models, sold through Alibaba Cloud and partly released as open weights.

Strongest model

Qwen3.8-Max

Intelligence Index

45.4

Beijing lab, also known as Zhipu AI, that builds the GLM models and releases open weights for most of them.

Strongest model

GLM-5.3

Intelligence Index

44.8

Shanghai lab building the Step family of multimodal models.

Strongest model

Step 5 Preview

Intelligence Index

43.7

Beijing developer of the Kimi assistant and the Kimi K-series models, which it releases as open weights and serves through its own API.

Strongest model

Kimi K3

Intelligence Index

43.6

Hangzhou lab that publishes its large models as MIT-licensed open weights and sells them through a low-priced first-party API.

Strongest model

DeepSeek V4.1 Flash

Intelligence Index

39.5

European lab that ships both open-weight and commercial models, and runs the Le Chat assistant and the Vibe coding agent.

Strongest model

Mistral Large 4

Intelligence Index

38.4

Shanghai company that builds the M-series language models alongside video, speech and music models, and publishes weights for its main text models.

Strongest model

MiniMax-M3

Intelligence Index

29.2

Research and product company behind the open-weight Inkling models and the Tinker fine-tuning platform.

Strongest model

Inkling-Small

Intelligence Index

25.7

Tencent's Hy (Hunyuan) team builds open-weight language models, sold commercially through Tencent Cloud.

Strongest model

Hy3

Intelligence Index

25.3

Publishes the Nemotron family of open-weight models, along with training data and recipes, for building and customising agents on NVIDIA hardware.

Strongest model

Nemotron 3 Ultra

Intelligence Index

22.9

Enterprise-focused lab behind the Command and North model families, with an emphasis on retrieval, tool use and private deployment.

Strongest model

Command A+

Intelligence Index

13.1

Amazon's in-house Nova family of text, multimodal and speech models, sold through Amazon Bedrock.

Strongest model

Nova 2 Lite

Tracked

1 model

Microsoft AI trains the in-house MAI models for Copilot and Microsoft Foundry; Microsoft also publishes the open-weights Phi small-model family.

Strongest model

MAI-Thinking-1

Tracked

1 model