AI API
Explore 78 curated AI API AI tools on WithAI.Top. Compare standout products by pricing model, use case, and core capabilities.
AI API is evolving fast. This category page on WithAI.Top is designed to help users compare the leading tools, understand common capabilities, and find the best fit for different workflows.
Featured Platforms
APIPod
APIPod is a unified AI media generation API for developers: one key unlocks 156 image, video and language models from 14 providers, including Seedance, Google Veo, Sora, Nano Banana, GPT Image, Kling, Wan and MiniMax. Billing is pay-as-you-go through credit top-ups, metered per token, request or second, with weighted multi-channel routing, automatic failover and circuit breakers on every request.
Ecommerce Data API
Amazon product, keyword, traffic and market research data through a REST API, remote MCP server and Agent Skill for developers and AI workflows.
Explore Directory
78 tools
FastRouter
FastRouter is a unified LLM gateway that gives developers one OpenAI-compatible API for 200+ models from providers such as OpenAI, Anthropic, Google, and xAI. It adds automatic model routing, fallbacks, caching, spend caps, role-based access, guardrails, and per-request observability, while passing provider token prices through with no markup on any plan, including the free tier.
Decisions API
Explore hosted decision models in one playground, then classify, score, and route text through a shared API.
DecisionsApi
Explore decision models in one playground and API. Classify, score, and route text with structured answers and probability signals.
Decisions API
Explore decision models in one playground. Compare models, then classify, score, and route text with structured answers. New accounts receive 100 credits.
Electron Hub
Electron Hub routes a single OpenAI-compatible request to more than 600 language, image, audio and embedding models from over 40 providers. A price-, latency- and health-aware router picks the cheapest healthy upstream, failing over automatically when a provider degrades. Developers get one key, usage-based credit billing, scoped proxy keys, an API console, a playground, an agent runtime and integrations for coding agents such as Claude Code, Cursor and Cline.
RunInfra
RunInfra, from RightNow, is a hosted inference platform that serves open models behind one API key compatible with both the OpenAI and Anthropic SDKs. It publishes per-token pricing with cached-input discounts, keeps each agent session on the replica that already holds its context, and reports cache hits in usage, so effective input rates land far below list price.
Space Bunny
A long-context multimodal AI playground and developer API for reasoning across text, images, video, code, and large documents.
Router One
Router One is an OpenAI- and Anthropic-compatible LLM API gateway that lets developers route GPT, Claude, Gemini, Grok and other frontier models through a single endpoint by changing only a base URL and key. It adds eligible same-model fallback when a provider route fails, per-request cost traces, key-level spend caps, and flexible billing through a prepaid wallet or Pro, Max and Ultra subscriptions.
Modelflare
Modelflare is a pay-as-you-go LLM API gateway that gives developers one OpenAI-compatible endpoint for 76+ text, image and video models. Each model exposes several routing groups priced between roughly 1.5% and 20% of official API list rates, so teams can trade cost against stability per request. A built-in dashboard tracks API keys, request logs, latency, token usage, cost and cache-hit guarantees in one place.
TokenRouter
TokenRouter is a unified AI model hub and API gateway that aggregates leading language, image, video and audio models into one OpenAI-, Claude- and Gemini-compatible interface. Operated by PaleBlueDot AI, it centralizes billing, quota control, usage analytics and audit logs, and routes requests across multiple upstream providers with automatic failover so teams get better pricing, stability and simpler integration.
MuleRouter
MuleRouter is a high-performance API gateway that unifies access to large language models, diffusion models and AI utilities behind a single authentication layer. Developers reach premium models such as Alibaba's Wan and Qwen families, OpenAI's GPT models, Google's Nano Banana, KlingAI and MiniMax through one reliable, cost-effective API, while MuleRouter's fine-tuned Spark video models deliver similar quality at a lower price.
RouteMarket AI
RouteMarket AI is a unified creative marketplace for AI models, workflows, provider routing, and developer APIs. It brings 125+ image, video, audio, text, and 3D models from 23+ providers into one workspace, with a model playground, reusable workflows, an OpenAI-compatible API, and BYOK key support. A free Personal tier unlocks every model, and new accounts earn free daily login credits.
AIHubMix
AIHubMix is an OpenAI-compatible API gateway that aggregates hundreds of AI models, including GPT, Claude, Gemini, Grok, Qwen, DeepSeek and GLM, behind one endpoint and one key. Developers get unified chat, responses and embeddings interfaces in one place, per-model token pricing, free model access, an in-house LLM router, and a console for managing keys, usage and billing.
Api.Airforce
Api.Airforce is a unified AI gateway that routes requests to 600+ models, including Claude, GPT, Gemini, DeepSeek, Grok, Qwen and Midjourney, through a single OpenAI-compatible API. Pay-as-you-go credits cost up to 90% less than official providers, with automatic failover, smart routing and a free tier to start building today. It also ships integration guides for popular coding agents, chat clients and CLI tools.
Segmind
Segmind is a serverless AI model platform and gateway for image, video, audio and voice generation. It exposes 550+ models from Alibaba, Kling, OpenAI, Google, Black Forest Labs and ElevenLabs through a single REST API, plus PixelFlow, a visual canvas that chains models into reusable workflows and republishes them as production endpoints. Billing is pay-as-you-go credits, monthly subscriptions or dedicated GPUs.
DeepInfra
DeepInfra runs open models as metered APIs. Developers call text generation, embeddings, reranking, speech recognition, text to speech, image, music and video endpoints, paying per token or per execution time with no contracts or upfront costs. Dedicated GPU deployments, custom model hosting and owned B300 clusters are also offered, all running on DeepInfra's own inference-optimised hardware in US data centers.
UnoRouter
UnoRouter is a unified AI API platform that gives developers one OpenAI-compatible key for 253+ models across 49+ upstream providers, including 132 free models and 121 pay-per-use routes. Add credit or subscribe for extra credit, then point coding agents, chat clients or its built-in browser chat at a single endpoint. Free models need no account, and pay-as-you-go credit never expires.
Tavily
Tavily is a search, extraction and research API built for AI agents and LLM applications. Developers call its Search, Extract, Crawl, Map and Research endpoints to retrieve live web results, pull clean chunked page content and run in-depth research, then feed that grounded context into models. It targets developers, startups and enterprises that need reliable, low-latency web access with built-in safety filtering.
Token Harbor
Token Harbor is a unified API gateway that gives developers one OpenAI-compatible endpoint for Anthropic, OpenAI, Gemini, Zhipu, Kimi and other leading models. Usage-based token billing sits alongside free monthly allowances and prepaid monthly Passes, and the service promises that the model ID you send is the model that runs, with data-retention controls you set yourself.
Apmix
Apmix is an AI API aggregation platform that puts eleven model families — GPT, Claude, Gemini, Grok, DeepSeek, Qwen, GLM, Kimi, MiniMax, MiMo and Hunyuan — behind one API key and one monthly subscription from $4.99. Point Claude Code, Codex CLI, Cursor or your own code at api.apmix.ai using OpenAI- or Anthropic-compatible endpoints, and track a single weighted-token allowance instead of paying six providers separately.
PackyAPI
PackyAPI is an enterprise AI gateway that connects Claude, GPT, Gemini, Grok, DeepSeek, Qwen and other providers behind one OpenAI-compatible and Anthropic-compatible endpoint. Teams prepay wallet credit, pick a token group whose multiplier sets the billing rate, then track calls, errors and spend in the console. The pricing page lists 68 models on pay-as-you-go token billing or pay-per-view image and video billing.