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API AI Tools

AI tools that offer a developer API for programmatic access and integration.

1,088 toolsFilter by price, platform & featureEvery tool verified live before listing
  • Lucidworks (Fusion)

    3.9

    AI-powered enterprise search and discovery platform whose Fusion product combines neural hybrid search, query intent classification and guardrails for large language models, sold as packages, no-code Studios and Lucidworks AI.

    Contact for Pricing Data and Analytics
  • New Relic

    4.3

    Observability platform that monitors applications, infrastructure and AI systems, with New Relic AI as a context-aware assistant, AIOps for predicting incidents and Autopilot for automated issue investigation.

  • Intento

    3.9

    Enterprise language platform that uses AI agents and machine translation to automate localization, customer and employee communication in over 650 languages.

    Contact for Pricing Writing
  • Localazy

    4.0

    Software localization platform that combines AI translation for first drafts with human review, AI-generated context for accuracy, and unlimited seats and languages on every plan.

    Freemium Writing
  • Headliner

    3.9

    Podcast and video marketing tool that turns full-length episodes into clips and audiograms, with AI transcription in 100+ languages, automatic captions and context-aware marketing text.

    Freemium Audio
  • Voicegain

    4.0

    Voice AI platform with speech-to-text APIs, voice agents and healthcare call automation that runs on its cloud, a private VPC or fully on-premises.

    Freemium Audio
  • Cypress

    4.4

    JavaScript end-to-end and component testing framework with a free open-source app and a paid Cypress Cloud that adds AI test generation from natural-language prompts, self-healing tests and AI insights on failures.

    Freemium Coding
  • Applitools

    4.1

    AI-augmented testing platform built around Visual AI, which validates what users actually see, and Autonomous, which creates and runs tests through AI-assisted recording and natural-language authoring.

    Free Trial Coding
  • ModiFace

    4.3

    AI and AR beauty technology powering real-time virtual try-on for makeup and hair colour plus AI skin analysis, built by L'Oreal and licensed to beauty brands and retailers worldwide.

    Contact for Pricing Fashion & Style AI
  • Zilliz

    4.6

    Fully managed vector database platform built by the creators of Milvus, offering real-time vector search, hybrid retrieval and lake-scale analytics for AI applications at billion-vector scale.

  • Prodigy

    4.5

    Scriptable data annotation tool for training and fine-tuning machine learning models, built by Explosion, the makers of the spaCy NLP library.

    Paid Coding
  • Ximilar

    3.9

    Computer vision API platform from Ximilar for fashion tagging, visual search, collectibles recognition and custom image models, free for up to 1,000 API credits a month.

  • TranscribeThis

    4.1

    AI audio and video transcription tool with speaker labels, summaries and subtitle export, free forever for short files and from $19.99 a month for unlimited use.

    Freemium Audio
  • WhatFontIs

    4.0

    AI font identification tool from WHATFONTIS COM SRL that matches an uploaded image against 1.2 million fonts, free with an ad-supported tier and PRO from $49.99 a year.

    Freemium Design
  • Mailchimp

    3.9

    Email marketing and automation platform, now Intuit Mailchimp, with generative AI content and subject-line tools, free for up to 500 contacts.

    Freemium Marketing
  • Bigjpg

    3.5

    Free AI image upscaler using deep convolutional neural networks to enlarge artwork and photos up to 16 times, with paid plans from $6.

    Freemium Image Generation
  • Speechmatics

    3.9

    Enterprise speech API platform for speech-to-text and voice agents in 55+ languages, with $100 in free usage and no card required.

    Freemium Audio
  • Pixelbin

    3.5

    AI photo and video generator and editor from Shopsense Retail Technologies, with 10 free credits and paid plans from about $17 a month.

    Freemium Image Generation
  • ReadSpeaker

    3.8

    Enterprise text-to-speech platform with 90+ languages and 300+ neural voices, built for business and education content.

    Contact for Pricing Audio
  • Handwrytten

    3.6

    Robot-written handwritten card service with automated triggers for birthdays, anniversaries and campaigns, from $100 a month for consumers.

    Paid Marketing
  • Fermat

    3.7

    Generative AI toolbox for fashion and luxury brands that builds moodboards, trains custom styles and renders garments on virtual models, from $30 a month.

    Free Trial Image Generation
  • Superlines

    3.6

    AI search visibility platform that tracks how brands appear across ChatGPT, Gemini, Perplexity and other AI answer engines, from EUR79 a month.

    Free Trial SEO
  • Bytebase

    3.9

    Database governance platform with a text-to-SQL AI assistant and an MCP server that lets AI agents query databases under the same controls as engineers.

    Freemium Coding
  • VideoHighlight

    3.6

    AI tool that summarizes and transcribes YouTube videos and uploaded files, with cross-video chat and search, from a free plan.

    Freemium Video
  • Orimon.ai

    3.7

    Generative AI chatbot platform for e-commerce, sales and support across WhatsApp, Instagram, Slack and more, with a free plan.

    Freemium Chatbots
  • Virtuoso QA

    3.9

    AI-native test automation platform with natural-language authoring, self-healing tests and human-approved AI test generation.

    Contact for Pricing Coding
  • Workist

    3.9

    Berlin AI agent that turns emailed and PDF orders and quote requests into ERP entries, with SOC 2 Type II and EU hosting.

    Contact for Pricing Automation
  • FormX.ai

    3.9

    Document data-extraction platform for invoices, receipts, bank statements and IDs, with an API, the first 100 pages free and SOC 2 Type II.

    Free Trial Automation
  • Voiser

    3.5

    Turkish AI voice platform for text to speech, transcription, dubbing, voice cloning and video, with plans from $4 a month.

    Freemium Audio
  • Tagbox

    3.7

    AI digital asset management that tags, searches and organises photo and video libraries, with a 30-day trial.

    Free Trial Marketing
  • DupDub

    3.7

    AI voice, avatar and video platform with text to speech, voice cloning, video translation and transcription on credit plans.

    Free Trial Audio

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