40 AI companies in the United States. The oldest was founded in 1975, the newest in 2026. Newest check: 11 Nov 2026.
59 of 86 companies were checked against the vendor's own page in the last 30 days.
| Company | Type | Based in | Founded | On Hokai | Checked |
|---|---|---|---|---|---|
| Ricursive IntelligenceAI lab from AlphaChip's creators, maker of Ripple open models | Startup | Palo Alto, USA | 2025 | 1 | 11 Nov |
| ThunderPhoneSan Francisco voice AI platform, maker of the Zeus agent | Startup | San Francisco, USA | 2024 | 1 | 11 Nov |
| Thinking Machines LabMurati's lab behind the Tinker API and the Inkling model family | Startup | San Francisco, USA | 2025 | 1 | 9 Nov |
| AnthropicBuilders of Claude, the AI model family spanning Fable, Opus, Sonnet and Haiku. | Research lab | San Francisco, USA | 2021 | 20 | 7 Nov |
| xAIElon Musk's AI lab building Grok, now SpaceX's AI arm with Cursor and Grok Bot. | Research lab | Palo Alto, USA | 2023 | 10 | 6 Nov |
| Particle AIPost-trains open models to finish coding tasks in fewer tokens | Startup | San Francisco, USA | -- | 1 | 30 Oct |
| Figure AIHumanoid robots for factories, warehouses and homes, driven by the in-house Helix AI model. | Startup | San Jose, USA | 2022 | -- | 25 Oct |
| SambaNova SystemsThe fastest AI inference platform, built on custom RDU chips. | Startup | San Jose, USA | 2017 | -- | 25 Oct |
| Skild AIBuilders of S1, the in-context-learning robot brain now crossing $100M ARR. | Startup | Pittsburgh, USA | 2023 | -- | 25 Oct |
| GoogleAlphabet's AI-first subsidiary powering Gemini, Google Cloud, and AI Overviews for billions. | Big tech | Mountain View, USA | 1998 | 26 | 24 Oct |
| Hanno LabsApplied AI for the work that still requires expert judgment | Research lab | United States | 2025 | 1 | 24 Oct |
| MicrosoftEmpowering organizations and individuals through cloud, AI, and productivity tools. | Big tech | Redmond, USA | 1975 | 10 | 24 Oct |
| Physical IntelligenceBuilding one foundation model brain to run any robot, any task | Startup | San Francisco, USA | 2024 | -- | 24 Oct |
| Protect AIAI and ML security company, acquired by Palo Alto Networks in 2025; its scanning technology now ships in Prisma AIRS. | Startup | Seattle, USA | 2022 | -- | 24 Oct |
| Scale AIAI training data, evaluations and enterprise agents, with a US government business. | Startup | San Francisco, USA | 2016 | -- | 24 Oct |
| Adobe Inc.Creative Cloud, Firefly AI, and document tools trusted by 30M+ professionals. | Enterprise vendor | San Jose, USA | 1982 | -- | 23 Oct |
| AmazonThe cloud giant behind Amazon Bedrock, the Nova models, Nova Act agents and Trainium chips. | Big tech | Seattle, USA | 1994 | 4 | 23 Oct |
| Loop AIEnterprise AI platform that trains client-owned language models instead of API calls. | Startup | San Francisco, USA | 2012 | -- | 23 Oct |
| ParasmaYC S26 startup training human brain cells for compute, as an alternative to GPUs. | Startup | San Francisco, USA | 2026 | -- | 23 Oct |
| Perplexity AIAI answer engine and agent company: cited answers, the Computer agent and an Agent API | Startup | San Francisco, USA | 2022 | -- | 23 Oct |
| NVIDIAThe GPU and AI infrastructure company behind the Blackwell and Vera Rubin platforms, CUDA and the open Nemotron models. | Big tech | Santa Clara, USA | 1993 | 7 | 22 Oct |
| World LabsFei-Fei Li's spatial intelligence startup building 3D world models | Startup | San Francisco, USA | 2024 | 1 | 21 Oct |
| Reflection AIOpen-weight frontier models for coding and agents | Startup | New York, USA | 2024 | 1 | 19 Oct |
| CloudflareConnectivity cloud for security, speed and AI inference at the edge | Enterprise vendor | San Francisco, USA | 2009 | 2 | 16 Oct |
| Meta AIMeta Platforms' AI division: open-weight Llama plus proprietary Muse Spark. | Big tech | Menlo Park, USA | 2013 | 6 | 15 Oct |
| TypeSafe AIBuild Prod, Not God: machine-native models for software, not chat. | Startup | San Francisco, USA | 2024 | 1 | 8 Oct |
| SunoAI music app behind Suno v6, licensed by Warner and BMG. | Startup | Cambridge, USA | 2022 | 1 | 6 Oct |
| Ai2Seattle nonprofit behind the fully open Olmo language models. | Research lab | Seattle, USA | 2014 | 1 | 3 Oct |
| InceptionDiffusion language models that refine text in parallel. | Startup | Palo Alto, USA | 2024 | 2 | 3 Oct |
| Safe Superintelligence Inc.Ilya Sutskever's stealth lab with one goal and one product: safe superintelligence. | Startup | Palo Alto, USA | 2024 | -- | 28 Sep |
| Mecha HealthFoundation models that draft radiology reports for physician review. | Startup | San Francisco, USA | 2024 | -- | 25 Aug |
| Amazon Web ServicesThe world's leading cloud platform, powering AI, compute, and storage for millions. | Big tech | Seattle, USA | 2006 | 3 | 19 Aug |
| GitHubWorld's leading development platform. Acquired by Microsoft in 2018. | Big tech | San Francisco, USA | 2008 | 1 | 19 Aug |
| Together AIAI infrastructure platform enabling distributed training and deployment of language models | Enterprise vendor | San Francisco, USA | 2022 | 1 | 19 Aug |
| NdeaAI research lab betting AGI comes from program synthesis, not more scale. | Research lab | San Francisco, USA | 2025 | -- | 17 Aug |
| OpenAICreator of GPT models and ChatGPT, advancing AGI for broad human benefit. | Research lab | San Francisco, USA | 2015 | 27 | 6 Nov |
| Liquid AIBuilders of the Liquid Foundation Models, device-native AI for edge hardware. | Startup | Cambridge, USA | 2023 | 4 | 29 Oct |
| OsmosisPost-training platform that fine-tunes task-specific models with reinforcement learning. | Startup | San Francisco, USA | 2024 | 1 | 28 Oct |
| GroqPurpose-built LPU inference chip and GroqCloud API for fast, low-cost AI. | Startup | Mountain View, USA | 2016 | -- | 24 Oct |
| OS3US-built semi-humanoid robots with video-trained intelligence | Startup | San Francisco, USA | 2025 | -- | 23 Oct |
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