AI Services Directory — what each service is actually for

ChatGPT

General-purpose assistant with chat, image, voice, research, and Codex access.

Typical use: Drafting and editing text in a chat interfacePricing: Free tier + subscription

Claude

Assistant for long-document work, writing, and agentic coding with Claude Code.

Typical use: Reading and analyzing long documents and codebasesPricing: Free tier + subscription + usage-based API

Gemini

Google's assistant across the Gemini app, Google apps, Search, and the Gemini API.

Typical use: Assistant work inside Google Workspace and ChromePricing: Free tier + subscription + usage-based API

DeepSeek

Free chat app and low-cost API with 1M-token context and off-peak pricing.

Typical use: Cost-sensitive text generation at scalePricing: Free app + usage-based API

Mistral Le Chat

European assistant and API platform with open-weight models and document AI.

Typical use: Chat and coding assistance with an EU-based providerPricing: Free tier + subscription + usage-based API

GitHub Copilot

AI coding assistant across GitHub, IDEs, the CLI, and pull-request review.

Typical use: Inline code completion and chat in the editorPricing: Free tier + subscription

Cursor

AI-first code editor and agent platform with pooled usage plans.

Typical use: Editor-first AI coding with multi-file editsPricing: Free tier + subscription

Claude Code

Agentic coding tool for terminal and IDE workflows, included in paid Claude plans.

Typical use: Repository-scale refactors and feature workPricing: Subscription + usage-based API

OpenAI Codex

OpenAI's coding agent across ChatGPT, CLI, IDE, and cloud tasks.

Typical use: Delegating coding tasks to a cloud or local agentPricing: Subscription + usage-based API

JetBrains Air

Agent development environment for running multiple coding agents in IDEs, web, CLI, and mobile.

Typical use: Running several coding agents in parallelPricing: AI credits + bring your own keys

Midjourney

Subscription image and short-video generation through a web app and Discord.

Typical use: Concept art and stylized illustrationPricing: Subscription only

OpenAI Image API

Image generation and editing API, also available inside ChatGPT.

Typical use: Embedding image generation in an app or workflowPricing: Usage-based API + ChatGPT subscription

Stability AI

Credit-based API for Stable Image, audio, and 3D models, plus open weights.

Typical use: Per-image cost-controlled generationPricing: Free credits + usage-based API

Adobe Firefly

Generative image, video, and audio inside Adobe apps and the Firefly web app.

Typical use: Commercial design work inside Photoshop and ExpressPricing: Free plan + subscription

Black Forest Labs FLUX

FLUX image and video models through a pay-as-you-go API or self-hosted weights.

Typical use: Per-image generation in an applicationPricing: Usage-based API + licensing

Runway

AI video and image generation with credit-based subscription plans.

Typical use: Text-to-video and image-to-video clipsPricing: Free tier + subscription

Pika

Consumer video generation with credit plans and one-time top-ups.

Typical use: Social short videos and effectsPricing: Free tier + subscription + credit top-ups

Luma Dream Machine

Creative agent for video and image generation with individual and team credit plans.

Typical use: Text-to-video and image-to-video generationPricing: Free trial + subscription

Google Veo

Google's video generation model, available through Google AI plans and Google Cloud APIs.

Typical use: Text-to-video and image-to-video with audioPricing: Subscription access + usage-based API

Kling AI

Video and image generation with a free daily credit allowance and subscription tiers.

Typical use: Short video generation for social mediaPricing: Free daily credits + subscription + usage-based API

ElevenLabs

Text-to-speech, voice cloning, dubbing, music, and conversational voice agents.

Typical use: Narration and audiobook productionPricing: Free tier + subscription + usage-based credits

OpenAI Audio API

Speech-to-text and text-to-speech APIs billed by usage.

Typical use: Transcribing audio and video filesPricing: Usage-based API + ChatGPT subscription

Deepgram

Speech-to-text, text-to-speech, and voice agent APIs with per-minute billing.

Typical use: Call and meeting transcriptionPricing: Free credit + usage-based API

AssemblyAI

Speech-to-text, audio intelligence, and voice agent APIs with per-hour pricing.

Typical use: Transcription with speaker diarizationPricing: Free credits + usage-based API

Azure AI Speech

Enterprise speech-to-text, neural TTS, translation, and speaker recognition.

Typical use: Enterprise speech applications on AzurePricing: Free tier + usage-based

OpenAI Embeddings

Text embedding models billed per input token for search and RAG.

Typical use: Semantic search over documentsPricing: Usage-based API

Cohere Embed

Embed 5 Pro and Fast models with separate indexing and query pricing.

Typical use: Enterprise search and RAG indexingPricing: Usage-based API

Voyage AI

Embedding and reranking models for RAG, with domain-specific variants.

Typical use: RAG retrieval with domain-specific embeddingsPricing: Free token allowance + usage-based API

Pinecone

Managed vector database for RAG and semantic search.

Typical use: Production vector searchPricing: Free tier + subscription + usage-based

Weaviate

AI-native vector database available as open source or managed cloud.

Typical use: Self-hosted vector searchPricing: Open source + free cloud tier + usage-based cloud

OpenAI Agents SDK

Open-source framework for multi-agent workflows with handoffs, guardrails, and tracing.

Typical use: Multi-agent orchestration with handoffsPricing: Open source + model usage

LangGraph

Low-level orchestration framework for stateful, long-running agents, plus a managed platform.

Typical use: Long-running agents that must survive failuresPricing: Open source + paid platform

CrewAI

Framework and platform for role-based multi-agent crews.

Typical use: Multi-agent research and analysis workflowsPricing: Open source + free cloud tier + enterprise

Dify

Open-source LLM app platform with visual workflows, RAG, and agents.

Typical use: RAG chatbots and internal knowledge appsPricing: Open source + free cloud tier + subscription

n8n

Workflow automation platform with AI and agent nodes, available self-hosted or cloud.

Typical use: Connecting SaaS apps and internal APIsPricing: Open source + subscription + free cloud trial

LangSmith

Tracing, evaluation, and observability for LLM and agent applications.

Typical use: Debugging agent and chain tracesPricing: Free tier + per-seat subscription + usage

Braintrust

Evaluation, logging, and prompt playground for AI products.

Typical use: Building eval suites for LLM featuresPricing: Free tier + subscription + usage

Arize Phoenix

Open-source LLM tracing and evaluation, with a managed cloud.

Typical use: Local tracing and debugging of LLM appsPricing: Open source + free cloud tier + subscription

W&B Weave

Tracing and evaluation for LLM apps inside the Weights & Biases platform.

Typical use: LLM tracing and evaluationPricing: Free tier + subscription

Ragas

Open-source evaluation framework for RAG and LLM pipelines.

Typical use: Evaluating RAG retrieval and answer qualityPricing: Open source

Free tier

A published free plan, free credits, or a free open-source edition. Limits and commercial-use terms vary; each service page links to the official terms.

Subscription

A recurring per-user, per-seat, or per-workspace fee. Usage may still be capped by credits, messages, or traces.

Usage-based

Billing per token, minute, image, second, trace, or request. The service page links to the provider's published unit prices.