Artificial intelligence is picking up steam. Here's some early-stage AI startups worth keeping an eye on.

Artificial intelligence is clearly on the mind of the biggest companies in tech. Of note, Facebook CEO Mark Zuckerberg recently called the development of artificial intelligence one of his top three key goals over the next 10 years. IBM launched a $100M Watson venture fund in January. And Google has already acquired a handful of AI startups including DeepMind Technologies of the UK for $500M.

With big moves taking place in the space, we took a look in the CB Insights database to pick a few up-and-coming startups that might be worth keeping an eye on in machine learning, natural language processing and who are working in the area of AI

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These startups are seed or Series A companies that have received funding since the start of 2013.

Early-Stage Artificial Intelligence Startups to Watch
 Name Logo Description Disclosed VC Funding Select Investors   API for Siri-like voice interfaces $3M Andreessen Horowitz, NEA, Ignition Partners
Idibon   Natural language processing to structure data from different languages $6.9M Khosla Ventures, Morningside Group, Samsung Ventures
Alchemy API   Deep learning for NLP and image recognition capabilities via API $2M Access Venture Partners
Expect Labs   Developer platform for powering voice interfaces across devices and apps $2.4M Google Ventures, Greylock Partners, Liberty Global Ventures, Intel Capital
Enlitic Deep learning for medical imaging $2M Data Collective, Amplify Partners wise Machine learning as a service $2.6M Voyager Capital
Nervana Systems   Hardware for deep learning applications $3.9M Draper Fisher Jurvetson, Allen & Company, AME Cloud Ventures
PredictionIO   Open source machine learning server $2.5M Azure Capital Partners, QuestVP, CrunchFund
Scaled Inference Stealth company developing general AI cloud services $4M Tencent, Felicis Ventures, Khosla Ventures
Kasisto   Conversational AI platform for enterprise mobile apps $2.25M New York Angels, Two Sigma Ventures, SRI International, BBVA   AI-powered personal assistant $2.1M Softbank Capital, IA Ventures, Lerer-Hippeau Ventures

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