Coding & Development
Best AI API Tools in 2026: Free & Paid Picks
AI API helps developers connect models, generation, analysis, and automation into real products. Use AI API to compare tools for pricing, endpoints, latency, model coverage, documentation, and integration experience.
546Total AI API Tools67Most Relevant AI API Tools130Free AI API ToolsAI API Tools updated Jun 18, 2026
Top tools
Top 10 AI API Tools
Explore top AI API Tools ranked by category fit, free access, AI-powered features, traffic, and pricing context.
Paid
Cl
Claude
An AI assistant for natural language tasks, coding, and workflow automation.
Improved performance and longer response generation with Claude 2Natural language processing for versatile personal and professional tasksMulti-platform accessibility via web browser, API, and desktop application
Free plan
De
Deepseek
Advanced open-source AI models and developer API platform.
Flagship large language models (DeepSeek-V3 and reasoning-focused R1)Free AI assistant features for search, writing, reading, and translationOpen-source coding and mathematical reasoning capabilitiesRobust DeepSeek API platform with context caching and off-peak discount pricing
Free plan
Op
OpenAI
Official subscription and pricing guide for ChatGPT plans and features.
Access to diverse reasoning models including GPT-4o, OpenAI o3, and OpenAI o4-miniAdvanced voice mode with support for video and screensharingInteractive tables, charts, and file upload capabilities for data analysisWorkspace customization with custom GPTs, projects, and collaborative tasks+1
Paid
Go
Google AI Studio
A fast prototyping environment to build applications with Gemini AI models.
Access to the latest Gemini multimodal generative AI models from Google DeepMindSupport for processing text, code, images, audio, and video inputsBreakthrough 2M token context window, context caching, and search grounding featuresGoogle AI Studio quickstart with prompt ideas and structured outputs
Free plans
Best Free AI API Tools
Start with free AI api tools that cover practical website workflows, core features, and AI-powered output quality.
| Tool | Plan status | Pricing | Traffic | Feature preview | Website |
|---|---|---|---|---|---|
| Deepseek | Free option | Free web access, API starts from $0.035/1M tokens | 430M/mo | Flagship large language models (DeepSeek-V3 and reasoning-focused R1), Free AI assistant features for search, writing, reading, and translation | Visit |
| OpenAI | Free option | Free, Plus from $20/mo, Pro from $200/mo, Team from $25/user/mo | 203M/mo | Access to diverse reasoning models including GPT-4o, OpenAI o3, and OpenAI o4-mini, Advanced voice mode with support for video and screensharing | Visit |
| DeepL | Free option | Free, Starter from $8.74/mo | 116M/mo | Instant text translation for 33 languages, Whole-file document translation (.pdf, .docx, .pptx) preserving original formatting | Visit |
| Claude 3 | Free option | Free, Pro from $17/mo | 22M/mo | Advanced reasoning for complex cognitive tasks, Vision analysis for transcribing and analyzing static images, graphs, and notes | Visit |
| Photoroom | Free option | Free, Pro from SGD 89.98/year | 19M/mo | Precise automatic background removal, Magic Retouch to erase unwanted objects with a swipe | Visit |
| OpenRouter | Free option | Free models available, paid models billed pay-as-you-go | 17M/mo | Unified API endpoint compatible with OpenAI SDKs out of the box, Access to over 300+ models from 50+ diverse providers | Visit |
| Semantic Scholar | Free option | Free | 7.9M/mo | AI-driven semantic search across 226+ million scientific papers, Semantic Reader (Beta) for augmented, highly accessible, and contextual scientific reading | Visit |
| Luma AI | Free option | Free, Lite from $9.99/mo, Plus from $29.99/mo | 4.9M/mo | Photorealistic 3D capture using Neural Radiance Fields (NeRFs) and volumetric photogrammetry, Luma Dream Machine for high-quality text-to-video and image-to-video generation | Visit |
| Groq | Free option | Free, on-demand from $0.05/M tokens | 3.6M/mo | LPU™ (Language Processing Unit) engine designed for fast text and language token generation, OpenAI API specification compatibility requiring only minor code adjustments | Visit |
| Removal.AI | Free option | Free, Monthly Subscription from $5.99/mo | 1.8M/mo | Fully automated background removal in 3 seconds or less, Neat, clear, and smooth cutout edges capable of handling hair and furry textures | Visit |
Traffic
Most visited AI API Tools
Use traffic, free-plan status, and starting price to compare the most visited tools in this category.
| Tool | Traffic | Free plan | Starting price | Website |
|---|---|---|---|---|
| Claude | 953M/mo | No | Free to use | Visit |
| Deepseek | 430M/mo | Yes | Free web access, API starts from $0.035/1M tokens | Visit |
| OpenAI | 203M/mo | Yes | Free, Plus from $20/mo, Pro from $200/mo, Team from $25/user/mo | Visit |
| Google AI Studio | 123M/mo | No | Free, Pay-as-you-go from $0.0375/1M tokens | Visit |
| DeepL | 116M/mo | Yes | Free, Starter from $8.74/mo | Visit |
| Magnific (formerly Freepik) | 105M/mo | No | Contact for Pricing | Visit |
| ElevenLabs | 35M/mo | No | Free, Starter from $5/mo | Visit |
| Tripo AI | 28M/mo | No | Free, Professional from $15.90/mo | Visit |
Browse all tools
Top AI API Tools Comparison
Browse all AI API Tools in this category with search, free-plan filtering, sorting, website signals, pricing, and AI-powered feature context.
| Tool | Free | Pricing | Traffic | Features | Website |
|---|---|---|---|---|---|
| DeepL | Yes | Free, Starter from $8.74/mo | 116M/mo | Instant text translation for 33 languages, Whole-file document translation (.pdf, .docx, .pptx) preserving original formatting | Visit |
| Tripo AI | No | Free, Professional from $15.90/mo | 28M/mo | Fast 3D generation from text, single images, multi-view images, or scribbles, Humanoid auto-rigging and automatic animation generation | Visit |
| Claude 3 | Yes | Free, Pro from $17/mo | 22M/mo | Advanced reasoning for complex cognitive tasks, Vision analysis for transcribing and analyzing static images, graphs, and notes | Visit |
| HeyGen | No | Free, Creator from $24/mo | 11M/mo | 100+ diverse and customizable realistic AI avatars, Text-to-video generation with synchronized lip movements | Visit |
| Semantic Scholar | Yes | Free | 7.9M/mo | AI-driven semantic search across 226+ million scientific papers, Semantic Reader (Beta) for augmented, highly accessible, and contextual scientific reading | Visit |
| Apify | No | Free, Starter from $39/mo | 4.4M/mo | Apify Store offering thousands of ready-made scraping Actors, Open-source local development libraries including Crawlee | Visit |
| HelloSign | No | Free, Essentials from $15/mo | 4.8M/mo | Unlimited signature requests on paid plans, Reusable templates to streamline frequent agreement workflows | Visit |
| Glean | No | Contact for Pricing | 3.2M/mo | Glean Search: Hybrid search, knowledge graph, and custom language models for enterprise data., Glean Assistant: Personal AI assistant for data analysis, next-gen prompting, and content creation. | Visit |
| YouCam AI & AR Business Solutions | No | Contact for Pricing | 3.1M/mo | AR Makeup Virtual Try-On & AI Skin Shade Finder, AI Skin Analysis (肌診断) with customizable skincare recommendations | Visit |
| klingai.com | No | Plans from $6.99/mo, API packages from $700/mo | 3M/mo | High-Quality Video Generation (Supports 5s and 10s video durations under Standard and Professional modes with Kling V1.0, V1.5, V1.6, and V2.0 Master models), Advanced Motion Brush and Camera Control (Allows creators to define movement trajectories and camera paths for precise control) | Visit |
| AI Image Upscaler | No | Free with watermarks, Limited from $9/mo | 2.4M/mo | AI-powered image resolution enhancement up to 8x, Batch processing supporting up to 500 images at once | Visit |
| ZeroGPT | No | Free, Pro from $7.99/mo | 26M/mo | AI text detection with sentence-level highlighting and percentage indicators, DeepAnalyse™ multi-stage methodology to evaluate content origin | Visit |
| LightPDF | Yes | Free, VIP from $2.77/mo | 1.8M/mo | AI-powered Document Agent (ChatPDF) to summarize, analyze, and translate content across multiple files and URLs., Comprehensive editing capabilities to modify text, images, links, backgrounds, and content redaction. | Visit |
| TTSMaker | Yes | Free, LITE from $9.99/mo | 1.7M/mo | Supports over 100 languages and 600+ high-quality AI voices, Advanced audio adjustments including speed, volume, pitch, and precise paragraph pause times | Visit |
| Composio | No | Free, Starter from $29/mo | 1.5M/mo | Framework and LLM agnostic integration supporting popular agentic frameworks, Over 250 pre-built tools including GitHub, Salesforce, Slack, and database systems | Visit |
| Lara Translate | No | Free, Pro from €9/mo | 1.3M/mo | Plain text translation with adjustable styles (Faithful, Fluid, Creative), Document translation supporting uploads of up to 200MB | Visit |
| Vbee AI Voice | No | Free trial available, paid plans start from approximately 1,000 VND/day | 728K/mo | Text to Speech conversion with realistic and emotional artificial voices, AI Dubbing to quickly translate and match voiceovers with video subtitles | Visit |
| Recruit CRM | No | Pro from $85/user/mo | 1M/mo | Applicant Tracking System (ATS) to reduce manual data entry, Customer Relationship Management (CRM) to manage client pipelines and deals | Visit |
| Mammouth | No | Starts at €10/mo | 2.1M/mo | Consolidated access to premier LLMs like Claude 3.7 Sonnet, GPT-4.1, Grok 3, and DeepSeek R1, Image generation utilizing Midjourney v6.1, FLUX.1.1 Pro, and Stable Diffusion v3.5 | Visit |
| Dify.AI | Yes | Free, Professional from $59/mo | 1.1M/mo | Dify Orchestration Studio for visual AI app design, Advanced RAG Pipeline with secure data and external knowledge APIs | Visit |
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