AI Tools With an API

AI voice generator for realistic text-to-speech, voice cloning, and dubbing.

ElevenLabs produces some of the most natural-sounding synthetic speech available, and is widely used for audiobooks, dubbing, voiceovers, and conversational AI agents. Pricing is credit-based — roughly 1,000 credits per minute of generated speech — with commercial usage rights unlocked starting at the first paid tier.

• Free tier gives ~10,000 credits/month (~10 min of speech) but no commercial usage rights
• Starter (~$5-6/mo) is the cheapest tier that unlocks commercial use and voice cloning
• Creator (~$22/mo) adds professional voice cloning and higher-quality 96kHz audio
• Also offers a Conversational AI product for building voice agents, billed separately by usage
• Higher tiers (Scale, Business) offer dedicated infrastructure for high-volume production use

AI assistant by Anthropic for writing, coding, analysis, and long documents.

Claude is Anthropic's AI assistant, known for handling long documents and codebases well and for a more careful, less sycophantic conversational style. It includes Projects for organizing related work, Artifacts for building and previewing documents/code inline, and Claude Code for terminal-based coding.

• Every plan (including Free) includes chat, Projects, and Artifacts
• Pro ($20/mo) adds Claude Code, unlimited Projects, and memory across conversations
• Max plans (5x/20x usage, $100–$200/mo) are built for heavy daily coding/writing workflows
• Team plans start at $25/seat/mo (annual) for shared workspaces and admin controls
• Runs on the Claude model family (Opus, Sonnet, Haiku) with up to a 1M-token context window on some tiers

Conversational AI assistant for writing, coding, research, and general Q&A.

ChatGPT is OpenAI's conversational AI assistant, built on the GPT model family. It handles everyday chat, document analysis, image generation, voice conversations, and — on paid tiers — autonomous "Agent" and Deep Research modes that complete multi-step tasks and web research on their own.

• Free tier includes unlimited everyday text chat
• Plus ($20/mo) adds Agent mode, Deep Research, image/voice tools and custom GPTs
• Two Pro tiers ($100 and $200/mo) multiply usage limits 5x and 20x for heavy daily use
• Codex Mobile (coding assistant) is free on every plan, including Free
• Business and Enterprise plans exclude your data from model training by default

Perplexity's AI-powered web browser that can research and act on pages for you.

Comet is Perplexity's desktop browser with an AI assistant built into the sidebar — it can summarize the page you're on, compare tabs, and carry out multi-step browsing tasks like research or form-filling on your behalf.

• AI assistant built into the browser
• Multi-step agentic browsing tasks
• Page summarization and comparison
• Built on Perplexity's search/answer engine

Open-source AI image generator you can self-host, fine-tune, and run without a subscription.

Stable Diffusion, made by Stability AI, is the major open-weight image generator: anyone can download the model and run it locally or in their own cloud, fine-tune it on custom data, and use it within the ecosystem of community tools like ComfyUI, LoRA, and ControlNet. The current generation is Stable Diffusion 3.5 (Large, Large Turbo, and Medium), released to run on consumer-grade hardware. Stability AI also offers a hosted API on a pay-per-image credit basis for those who do not want to self-host.

• Open-weight model — download, self-host, and fine-tune for free
• Runs on consumer-grade hardware (SD 3.5 Medium/Large/Large Turbo)
• Large community ecosystem: ComfyUI, LoRA fine-tunes, ControlNet
• No subscription required for self-hosted use
• Hosted Stability AI API available on a pay-per-image credit basis
• Commercial self-hosting license available for enterprise use

Google's AI assistant integrated with Search, Workspace, and Android.

Gemini is Google's AI assistant, built into Search, Gmail, Docs, and Android as well as available standalone. Paid tiers are sold as "Google AI" plans that bundle Google One cloud storage alongside higher usage limits and access to Google's top-tier models and Veo video generation.

• Free tier includes Deep Research, Gemini Live, and Canvas with 15GB storage
• Google AI Plus (~$5/mo) adds Veo video generation and 400GB storage
• Google AI Pro (~$20/mo) is the direct successor to "Gemini Advanced"
• Google AI Ultra (~$100–$200/mo, pricing has shifted through 2026) adds the highest usage caps and Deep Think
• Deep integration with Gmail, Docs, Sheets, and Slides for Workspace users

OpenAI's text-to-image generation model, integrated into ChatGPT.

DALL-E is OpenAI's image generation model. It is no longer sold as a separate standalone product — access is through ChatGPT (Free and Plus tiers both include image generation) or pay-per-use through the OpenAI API for developers.

• Accessed through ChatGPT rather than a separate app or subscription
• Available on ChatGPT's Free tier with usage limits; higher limits on Plus ($20/mo)
• Strong at following detailed natural-language prompts and rendering text within images
• API access is billed per image/token for developers building it into other products
• Generated images can be edited and refined conversationally within the same ChatGPT thread

Secure cloud sandboxes for running AI-generated code safely.

E2B provides isolated cloud sandboxes that AI agents and code-interpreter features can execute untrusted, AI-generated code inside — spinning up in seconds, with filesystem and internet access, so developers don't have to run model output directly on their own infrastructure.

• Fast-starting isolated code sandboxes
• Built for AI agent code execution
• SDKs for Python and JavaScript

AI-ready web scraping API that turns any website into clean, structured data.

Firecrawl crawls websites and converts pages into clean markdown or structured JSON specifically formatted for feeding into LLMs, handling JavaScript rendering, pagination, and rate limits so developers don't have to build a scraper for every AI data-ingestion pipeline.

• LLM-ready markdown/JSON output
• Handles JavaScript-rendered pages
• Full-site crawling and single-page scraping

AI-native search API built for retrieval by LLMs and AI agents.

Exa (formerly Metaphor Systems) is a search API built specifically for AI applications — it uses embeddings-based search to find semantically relevant web pages for a query, rather than keyword matching, making it a common backend for AI research agents and RAG pipelines.

• Embeddings-based semantic web search
• Built for LLM/agent retrieval, not humans
• Content and similarity search endpoints

Turns a script, image, or recording into a talking-avatar video, plus interactive AI video agents.

D-ID generates videos of AI avatars — stock or a personal clone — speaking a script with a matched cloned or synthetic voice, and can also build interactive "visual agents" that respond live in real time. It runs on a credit system shared across Studio and API use, where longer or higher-quality videos consume more credits, and unused credits expire when a plan renews. Personal, non-commercial use starts on the Lite plan; commercial rights begin at Pro.

• Script, image, or recording-to-avatar video generation
• Personal avatar creation and voice cloning
• Interactive real-time visual agents, not just static video
• Multi-language video translation for existing footage
• Credit-based pricing — cost scales with video length and quality
• Commercial usage rights start at the Pro plan

Managed vector database for building AI search and RAG applications.

Pinecone is a fully managed vector database used to store embeddings and run fast similarity search at scale — the backbone of most retrieval-augmented-generation (RAG) AI applications, semantic search products, and recommendation engines.

• Fast vector similarity search at scale
• Fully managed, no infra to run
• Metadata filtering and hybrid search

AI-driven property valuation and real estate market analytics.

HouseCanary provides AI/ML-based home valuations (AVMs), forecasts, and property risk data used by lenders, investors, and real estate brokerages to price and evaluate residential properties.

• Automated home valuations (AVM)
• Market forecasting data
• Property risk and condition scoring

LLM prompt management and evaluation platform for product teams.

Humanloop helps teams manage prompts, run evaluations, and monitor LLM application quality in production — letting product managers iterate on prompts without redeploying code, while engineers track regressions with automated and human-graded evals.

• Prompt versioning and management
• Automated and human-in-the-loop evaluations
• Production LLM monitoring

AI product search and discovery platform built for e-commerce.

Constructor.io is an AI-native search and product-discovery platform purpose-built for online retailers, combining semantic search, personalized recommendations, and merchandising controls to increase conversion on category and search-result pages.

• Semantic, intent-aware product search
• Personalized recommendations
• Merchandiser controls for search ranking

Open-source vector database for AI search and RAG applications.

Weaviate is an open-source vector database that stores data objects alongside their vector embeddings, letting developers combine semantic search with structured filters. It can be self-hosted or used as a managed cloud service, and integrates with most popular embedding models.

• Open-source and self-hostable
• Hybrid semantic + keyword search
• Modules for popular embedding providers

Serverless cloud platform for running AI/ML workloads and GPUs on demand.

Modal lets developers run Python functions in the cloud — including GPU-backed AI inference and training jobs — without managing servers, scaling automatically from zero and billing by the second, popular for deploying custom AI models and batch jobs.

• On-demand serverless GPUs
• Scales to zero, pay-per-second billing
• Simple Python-native deployment

Prompt management and LLM observability platform for teams.

PromptLayer logs every LLM API call a team makes, letting engineers search and replay past prompts, track cost and latency, and manage prompt versions in a visual editor separate from application code — aimed at teams running many LLM calls in production.

• Full LLM request logging and search
• Visual prompt versioning and editing
• Cost and latency tracking

AI-driven real-time supply chain visibility and predictive ETA platform.

FourKites tracks shipments across ocean, rail, and truck networks and uses machine learning to predict arrival times and flag disruptions before they happen, giving supply chain teams a real-time view across their entire logistics network.

• Real-time, multimodal shipment tracking
• ML-based predictive ETAs
• Automated disruption and delay alerts

AI-powered supply chain visibility platform for tracking shipments.

project44 provides real-time, AI-enhanced tracking and predictive ETAs across ocean, air, rail, and truck shipments, helping supply chain teams anticipate delays and disruptions.

• Real-time multimodal shipment tracking
• AI-predicted ETAs
• Disruption and delay alerts