Best API Available AI Tools

Freemium

AI-enhanced relational database with the simplicity of a spreadsheet

• AI-powered field generation and natural language queries
• Relational database with linked records and lookups
• Interface Designer for custom apps and dashboards
• Multiple views: Grid, Kanban, Calendar, Gantt, Gallery
• Automations with multi-step workflows

Freemium

AWS-integrated AI assistant for coding, debugging, and cloud operations

• Unlimited free code suggestions across 15+ languages
• Deep AWS service and API understanding
• Automated code transformation (Java upgrades, .NET migration)
• Security vulnerability scanning
• Agent mode for autonomous feature implementation

Freemium

Sales intelligence platform with 275M+ contacts and AI-powered outreach

• B2B contact database with 275M+ verified contacts
• AI Email Writer for personalized cold outreach
• Multi-step sequences across email, phone, and LinkedIn
• AI-powered lead scoring with fit and intent signals
• Conversation Intelligence with call recording and AI summaries

Freemium

Anthropic's AI assistant built for thoughtful analysis and safe, nuanced conversations

• 200K token context window for massive document processing
• Artifacts — interactive side-panel for code, docs, and visualizations
• Projects with persistent context and custom instructions
• Claude Code CLI for developer workflow integration
• Superior long-form writing and analysis quality

Freemium

AI-powered GTM platform for marketing copy and sales enablement

• 90+ copywriting templates for ads, emails, and social media
• Workflow automation for chaining multi-step content pipelines
• Bulk content generation for A/B testing at scale
• Sales enablement templates for outreach and prospecting
• Brand voice customization and style controls

Freemium

OpenAI's image generation model integrated directly into ChatGPT

• Conversational image generation through ChatGPT
• Superior text rendering within generated images
• Automatic prompt optimization by ChatGPT
• Iterative refinement through natural language follow-ups
• Multiple resolution and quality options

Freemium

Accessible AI image generator with multiple style APIs and developer tools

• Text-to-image generation with multiple style options
• Specialized generators (cartoon, fantasy, cyberpunk, etc.)
• Image colorization for black-and-white photos
• Super resolution image upscaling
• Neural style transfer between images

Freemium

AI translation service regarded as the most accurate for European languages

• Neural machine translation across 30+ languages
• Document translation preserving original formatting
• DeepL Write for style, tone, and grammar improvement
• Custom glossaries for consistent terminology
• Website translation

Free

Open-source Chinese AI with reasoning capabilities rivaling the best

• DeepSeek-R1 chain-of-thought reasoning model
• DeepSeek-V3 general-purpose model
• Fully open-source model weights (MIT license)
• Mathematical reasoning and proof capabilities
• Code generation across multiple languages

Open Source

Open-source platform for building LLM apps with visual agent workflows

• Visual workflow editor for AI agent and pipeline design
• RAG knowledge base with multi-format document ingestion
• Support for 100+ LLM providers including local models via Ollama
• Agent mode with autonomous tool selection and execution
• Prompt engineering IDE with variable management and versioning

Freemium

Ultra-realistic AI voice synthesis with instant voice cloning

• Ultra-realistic text-to-speech in 32 languages
• Instant and professional voice cloning
• Real-time streaming speech synthesis
• Voice library marketplace with 200+ voices
• Long-form Projects for audiobooks and podcasts

Freemium

AI-native presentation maker with 70M+ users worldwide

• AI-powered full presentation generation from prompts
• Gamma Agent for research-to-deck automation
• Interactive card-based presentation format
• Built-in analytics with viewer tracking
• Custom branding and theme editor

Freemium

Leading AI avatar platform for business videos and multilingual dubbing

• 100+ photorealistic AI avatars with natural expressions
• Multilingual video translation with voice cloning and lip-sync
• Custom avatar creation from personal video recording
• API for programmatic video generation at scale
• Template library for common business video formats

Freemium

AI image generator with best-in-class text rendering accuracy

• Industry-leading text rendering accuracy in generated images
• Multiple style modes: Realistic, Design, Anime, 3D Render
• Magic Prompt for automatic prompt enhancement
• Describe feature for reverse-engineering prompts from images
• Community feed with trending generations and remixing

Freemium

AI full-stack app builder with Supabase backend from natural language prompts

• Full-stack app generation from natural language
• Automatic Supabase backend setup (database, auth, storage)
• Visual editor alongside AI prompt interface
• React and TypeScript production-ready output
• GitHub export for continued development

Freemium

Dream Machine video generation with photorealistic 3D capture technology

• Dream Machine text-to-video and image-to-video generation
• Photorealistic 3D capture from smartphone video
• Coherent camera motion and physics simulation
• Video extension to continue generated clips
• NeRF-based 3D scene reconstruction

Freemium

Visual automation platform with powerful branching logic for complex workflows

• Visual canvas-based scenario builder with 1,800+ app integrations
• Routers, iterators, and aggregators for complex branching logic
• HTTP/SOAP modules for connecting any REST or SOAP API
• Built-in data stores for persistent state between executions
• AI assistant for natural language scenario creation

Freemium

Visual work OS with AI-powered automations and workflows

• AI-powered content generation and summarization with credits
• Visual color-coded boards with multiple views
• No-code automations with hundreds of recipes
• Specialized products for CRM, Dev, and Service
• 200+ native integrations

Freemium

Enterprise AI voiceover platform for e-learning and corporate content

• 200+ AI voices across 30+ languages
• Studio editor with pitch, speed, and emphasis controls
• Video and voiceover synchronization
• PowerPoint add-in for slide narration
• Voice cloning for brand consistency

Freemium

AI-powered search engine that answers questions with cited sources

• Real-time web search with inline source citations
• Pro Search multi-step deep research automation
• Multiple model options (Sonar, GPT-4o, Claude)
• File upload and document analysis
• Collections for organizing research threads

Freemium

AI product photo studio for e-commerce with instant background generation

• Instant AI background removal optimized for products
• AI Background Generator for studio-quality scene placement
• Realistic AI Shadow generation matching scene lighting
• Smart Resize for multi-platform dimension adaptation
• Batch processing for high-volume catalog editing

Freemium

Ultra-realistic AI voices with unlimited plans and developer API

• Ultra-realistic AI voices with emotional range
• Voice cloning from short audio samples
• Real-time streaming API with WebSocket support
• Built-in podcast hosting and distribution
• SSML markup for precise speech control

Freemium

Instant AI background removal in seconds with one click

• One-click instant background removal via web interface
• Handles hair, fur, and semi-transparent edges precisely
• Background replacement with custom images or solid colors
• Batch processing via desktop app
• Photoshop and Figma plugin integrations

Freemium

Industry-leading AI video generation with Gen-3 Alpha model

• Gen-3 Alpha text-to-video and image-to-video generation
• Motion brush for directing movement in generated clips
• 30+ AI creative tools (inpainting, expand, remove background)
• Custom model training on your own visual data
• Multi-track video editor built into the platform

Free

Free AI-powered academic search engine with 200M+ papers and citation graphs

• AI-generated TLDR one-sentence paper summaries
• Influential citation detection distinguishing meaningful from perfunctory citations
• Interactive citation graphs mapping research lineage
• Personalized Research Feed based on your interests
• Semantic Reader with inline definitions and highlights

Paid

Enterprise AI avatar video platform trusted by Fortune 500 companies

• 230+ diverse AI avatars with natural expressions
• 140+ languages and accents with accurate lip-sync
• Custom avatar creation from video recording
• Multi-scene editor with slides, screen recording, and animations
• One-click video translation across all languages

Freemium

Computational knowledge engine for math, science, and data analysis

• Symbolic and numerical math computation (algebra through advanced calculus)
• Step-by-step solutions showing full working process (Pro)
• Real-world data queries across science, finance, geography, nutrition
• Function plotting and interactive visualizations
• Unit conversions and entity comparisons

Freemium

AI coding agent built for large enterprise codebases with deep indexing

• Deep semantic codebase indexing at enterprise scale
• Cross-file dependency and API contract understanding
• Multi-repository context awareness
• Agent mode for complex multi-file changes
• VS Code and JetBrains extensions

Freemium

AI editing suite by Stability AI for cleanup, upscale, and relight

• AI Cleanup for intelligent object and blemish removal
• Relight tool for post-capture lighting adjustment
• Background removal and replacement
• Uncrop for extending image boundaries
• Image upscaler with AI detail enhancement

Freemium

Free unlimited AI image generator formerly known as DALL-E Mini

• Unlimited free image generation with no account required
• 9 image variations generated per prompt
• Simple one-prompt, one-button interface
• Negative prompt support for excluding elements
• Multiple art style options

Freemium

AI app generator for web apps, internal tools, and landing pages

• Natural language app generation from descriptions
• Web app, internal tool, and landing page creation
• External API and data source integration
• Custom domain deployment
• Responsive design automation

Freemium

AI talking head videos from photos with an API-first approach

• Photo-to-talking-head video generation
• 100+ language support with voice synthesis
• REST API for programmatic video creation
• Real-time streaming avatars for live interactions
• Custom presenter uploads from personal photos

Freemium

Automated product photo enhancement with smart backgrounds and shadows

• Automatic background removal with scene replacement
• Smart Templates for consistent product image styling
• AI-generated realistic shadows and reflections
• Batch processing for catalog-scale operations
• Custom template creation for brand consistency

Open Source

Open-source drag-and-drop builder for LLM apps and AI agents

• Visual drag-and-drop canvas for building LLM workflows
• Built on LangChain and LlamaIndex ecosystems
• Support for all major LLM providers and vector databases
• One-click API deployment for embedding in applications
• Custom JavaScript functions and tool creation

Freemium

Unfiltered AI character roleplay platform with a massive community

• Large library of user-created AI characters
• NSFW-friendly content policy
• Detailed character creation tools
• Community character discovery and ratings
• Multiple conversation scenario formats

Free

Moonshot AI's long-context chatbot with a 2 million token window

• 2 million token context window — largest among consumer chatbots
• Multi-document upload and cross-document analysis
• PDF, Word, Excel, and code file processing
• Web page analysis and summarization
• Image understanding and description

Freemium

Kuaishou's video generation model with strong motion and physics understanding

• Text-to-video and image-to-video generation
• Up to 2-minute video clip generation
• Strong physics and motion understanding
• Multiple generation modes and quality levels
• Video extension and continuation

Free

Europe's leading AI assistant with strong multilingual open-weight models

• Mistral Large frontier model access
• Strong multilingual capabilities (especially European languages)
• Web search with source citations
• Canvas mode for collaborative document editing
• Code generation and debugging

Freemium

AI background removal and photo editing optimized for e-commerce

• AI background removal for products, people, and objects
• Marketplace-specific background templates
• Batch processing via desktop application
• AI image upscaling and enhancement
• Photo retouching with blemish and face correction

Freemium

Multi-model AI platform with access to GPT-4, Claude, Gemini, and custom bots

• Access to GPT-4o, Claude, Gemini, Llama, Mistral in one interface
• Custom bot creation with system prompts and knowledge bases
• Bot marketplace with community-created specialized assistants
• Compute-point system for flexible model usage
• Multi-bot conversations

Freemium

Professional voice cloning with real-time conversion and deepfake detection

• Voice cloning from as little as 3 minutes of audio
• Real-time voice conversion with low latency
• Deepfake audio detection (Resemble Detect)
• Emotion and style controls for synthetic speech
• Multilingual voice synthesis

Freemium

Budget-friendly AI writer with 40+ use cases and 30+ languages

• 40+ use case templates for diverse content types
• 30+ language support for global content creation
• 20+ tone-of-voice options per template
• Built-in plagiarism checker
• Grammar and readability analysis

Open Source

Leading open-source AI image model powering thousands of creative tools

• Open-source model weights for unrestricted local deployment
• SDXL and SD3 models with high-resolution output
• ControlNet for precise pose, depth, and edge-guided generation
• Massive community ecosystem of fine-tuned models and LoRAs
• Inpainting and outpainting for image editing

Freemium

Privacy-focused AI search engine with multiple modes and model access

• Multiple search modes (Smart, Genius, Research, Create)
• Multi-model access (GPT-4o, Claude, open-source)
• Privacy-focused — no ad profiling
• Deep Research mode with multi-step investigation
• Web search with source citations