Top API & Backend Generation AI Tools

AI meeting recorder and notetaker with automation, search, and app integrations.

Fireflies.ai records, transcribes, and summarizes meetings across Zoom, Google Meet, and Microsoft Teams, then turns them into searchable notes with Smart Search, Soundbites, and AI-generated summaries and action items. AI Apps and Zapier-style automations let teams push meeting outcomes into their existing tools. A shared pool of AI credits governs summary and highlight generation on each plan.

• Auto-records and transcribes Zoom, Google Meet, and Microsoft Teams meetings
• AI summaries, action items, and an AskFred conversational assistant
• Smart Search and Soundbites for finding key moments across meetings
• Zapier-style automations to route meeting data into other apps
• Free plan available with a limited one-time AI credit pool
• HIPAA compliance and SSO on the Enterprise tier

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

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

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

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

AI tool that generates 3D models from text prompts or images.

Meshy AI converts text descriptions or 2D images into textured 3D models, aimed at speeding up asset creation for games, animation, and product visualization.

• Text-to-3D and image-to-3D generation
• Automatic texturing
• Exportable game-ready formats

Visual, graph-based no-code automation platform with branching logic and AI modules.

Make (formerly Integromat) is a visual workflow automation platform where scenarios are built as branching graphs rather than linear chains — with routers, filters, iterators, and error handlers for complex logic. It connects thousands of apps and prices by operations rather than per-task, which tends to work out cheaper than Zapier for multi-step workflows. 2026 additions include AI Agents (beta), an MCP server, and an AI Toolkit with 350+ AI-ready app modules.

• Visual, graph-based scenario builder with routers, filters, and iterators
• Operations-based pricing — often cheaper than per-task tools at scale
• AI Agents (beta), MCP server, and AI Toolkit for AI-driven workflows
• 150+ built-in functions for inline data transformation
• Built-in error handling with retry and fallback routes
• Free tier (1,000 ops/mo); paid plans start around $9-10/mo

Ultra-fast LLM inference platform powered by custom LPU chips.

Groq provides an API and cloud console for running popular open-weight language models at extremely high inference speed using its purpose-built Language Processing Unit (LPU) hardware.

• Very low-latency inference
• Custom LPU hardware
• Runs popular open models (Llama, Mixtral, etc.)
• Simple OpenAI-compatible API

Enterprise LLM provider behind the Jamba model family, built for long-context tasks.

AI21 Labs is an Israeli AI company building the Jamba family of large language models on a hybrid transformer/state-space architecture optimized for long context windows. Its API and AI21 Studio platform target enterprise use cases like document summarization, knowledge management, and customer service automation in regulated industries.

• Jamba hybrid transformer/state-space models
• Optimized for very long context windows
• Enterprise focus with regulated-industry customers
• Developer API via AI21 Studio

No-code AI workflow builder for automating multi-step business tasks with LLMs.

Gumloop is a drag-and-drop workflow builder that lets non-engineers chain together AI models, web scraping, and app integrations to automate multi-step tasks like lead enrichment, report generation, and document processing.

• Drag-and-drop AI workflow builder
• Chains multiple AI models and tools together
• Pre-built templates for common workflows
• No-code, built for non-engineers

AI-powered spreadsheet with built-in web data connections and automation.

Rows is a spreadsheet tool that connects directly to web APIs and services, with AI functions that can generate formulas, summarize data, and pull in live data (like social stats or stock prices) without manual copy-pasting.

• AI-generated spreadsheet formulas from plain-language prompts
• Built-in connections to live web data sources
• Automation for recurring data refreshes
• Shareable, embeddable spreadsheet views

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

French AI lab offering open and commercial LLMs plus the Le Chat assistant.

Mistral AI builds open-weight and proprietary large language models and offers Le Chat, a consumer chat assistant, alongside an enterprise API platform positioned as a European alternative to OpenAI and Anthropic.

• Open-weight model options
• EU-based, data-residency friendly
• Le Chat assistant
• Competitive API pricing

AI-assisted crypto tax software that calculates gains across exchanges and wallets.

TokenTax pulls transaction data from crypto exchanges and wallets and uses AI-assisted reconciliation to calculate capital gains and generate tax forms, even across complex DeFi activity.

• Cross-exchange/wallet transaction reconciliation
• DeFi and complex transaction support
• Automated tax form generation

No-code platform for building a custom AI chatbot trained on your own website, documents, and data.

Chatbase lets teams build a GPT-powered chatbot by feeding it a website, PDFs, or other documents, then embed it on a site or connect it to channels like Slack or WhatsApp. It supports AI Actions for triggering workflows or API calls from within a conversation, plus analytics on what visitors ask. Usage is billed on monthly message credits per plan, with add-on credit packs available for teams that exceed their tier's allowance.

• Trains a chatbot on your website, PDFs, and other documents
• AI Actions let the bot trigger workflows or call external APIs
• Multi-channel deployment (website widget, Slack, WhatsApp, and more)
• Analytics on conversations and unanswered questions
• Free tier: 1 agent, 50 message credits/month
• Paid tiers add more agents, credits, API access, and integrations

Developer platform for building AI voice agents that handle phone calls for support and sales.

Retell AI provides an API and low-code tools for building AI phone agents that can answer inbound calls or make outbound calls, following custom scripts and integrating with business systems like CRMs and calendars. It focuses on reliable telephony infrastructure alongside the conversational AI layer.

• Inbound and outbound AI phone agents
• Telephony infrastructure included
• CRM and calendar integrations
• Custom conversation scripting

AI image upscaler and quality enhancer for photos and product images.

Let's Enhance upscales low-resolution images while improving sharpness and detail, with presets tuned for photography, real estate, and e-commerce product photos, available via web app or bulk API processing.

• Presets for photo, real estate, and product images
• Bulk processing via API
• Detail enhancement, not just upscaling
• Batch editing tools

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

API platform for accessing wearable and lab health data with AI-ready normalization.

Vital gives developers a single API to pull data from wearables, labs, and health apps, normalizing it into a consistent format that's ready to feed into AI-powered health products.

• Unified wearable/lab data API
• Normalized data format across sources
• Built for AI-powered health products

AI-assisted digital physical therapy program for joint and muscle pain.

Hinge Health pairs wearable motion sensors with AI feedback to guide people through physical therapy exercises at home, supported by human physical therapists and health coaches.

• AI motion tracking during exercises
• Combined with human PT and coach support
• Employer-sponsored benefit model