AI API Router Directory

Azure OpenAI (Microsoft Foundry) serves the GPT family per 1M tokens in three priced deployment scopes — Global, Data Zone (EU/US, +10%) and Regional (up to 27 regions): GPT-5.6 Sol $5/$30 (short context, Global), Terra $2/$12, Luna $0.20/$1.20, gpt-oss-120b $0.15/$0.60. Batch (−50%) and PTU reservations (from $1/PTU/hr Global) sit under the same account; new Azure accounts carry a $200/30-day trial credit.

New Azure accounts: $200 credit for 30 days (stated on the Azure OpenAI pricing page; Azure-wide, applicable to Azure OpenAI — verified 2026-09-16). No standing free tier beyond it.

ChatAnywhere is a widely used free LLM relay. Users bind a GitHub account to get a free API key and access GPT-4o, Claude, and Gemini models through an OpenAI-compatible interface, optimized for access from mainland China.

GitHub-bound free key: 10,000 points/day with per-model caps (GPT-5/4o/4.1 5/day, DeepSeek 30/day, mini models 100/day, ~200 req/day total) ≈ $2/mo; personal non-commercial use only.

ChatAnywhere (GPT_API_free) is a widely used AI API relay providing unified access to global models including OpenAI, Claude, Gemini, and DeepSeek. It offers a GitHub-authorized free tier and low-cost paid access with endpoints optimized for users in mainland China and overseas.

Free keys, personal non-commercial only: ~200 req/day per IP&key (GPT-5/4o/4.1 5/day, DeepSeek 30/day, small models 200/day) ≈ $2/mo equivalent at typical token volumes.

Bytez is an AI model hosting platform that offers an OpenAI-compatible API for a wide range of models. It provides $1 in free credits that refresh every 4 weeks and uses a low-cost pay-as-you-go pricing model.

$1 free credits, refreshes every 4 weeks

Electron Hub provides a unified API to 600+ models, including premium frontier models (GPT, Claude, Gemini). It offers weekly credit refills on both free and paid subscription plans, plus permanent top-ups.

$0.25 weekly credits on the Free plan.

DXNT (DX Token) is an AI model API gateway providing unified access to GLM, Kimi, MiniMax, and DeepSeek. It offers high compatibility with IDEs and agents, featuring smart routing and MCP support. Details were checked against the provider's own page at dxnt.com.

100+ free calls daily on unified entry.

PiAPI offers a model aggregation platform with native API formats. It provides subscription tiers that include bonus credits and pay-as-you-go usage. New users receive a $0.50 starting credit. Details were checked against the provider's own page at piapi.ai.

No public free-tier information found (researched 2026-08-29).

NexoToken is a commercial aggregation relay covering 130+ LLMs with an OpenAI-compatible /v1 endpoint. It uses an ultra-low-multiplier (0.01x-0.03x) billing system and offers a daily refreshing free quota for ~40 models.

~40 models offer daily free quotas that auto-refresh the next day (including some Claude/GPT/Gemini models); claims of sign-up bonus and 7-day no-questions refund are platform self-promotion — actual amounts per the console.

Cursor is an AI code editor sold on self-serve plans: Hobby is free, the $20/month individual tier (listed as Individual on the pricing page and as Pro in the docs) adds extended Agent limits and frontier models, Pro Plus is $60/month, Ultra is $200/month, and Teams is $40/user/month Standard or $120/user/month Premium with Enterprise as custom. Hobby requires no credit card and lists limited Agent requests and access to Composer. Cursor states there are two usage pools - Cursor Models for Grok 4.6, Grok 4.5 and Composer 2.5, and Other Models for third-party models billed at API price - and that Teams and Enterprise add a $0.25 per million token Cursor Token Rate on third-party model requests.

Cursor Hobby is free with no credit card required, limited Agent requests and access to Composer (cursor.com/pricing, checked 2026-09-16).

AI/ML API is a major AI model aggregator providing unified access to 1000+ models from OpenAI, Anthropic, Google, DeepSeek, and more. It offers a single API key for LLM, image, voice, and video models with a focus on production-ready pay-as-you-go access.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Azure AI Foundry (formerly Azure AI Studio) provides access to a vast catalog of models including OpenAI, Anthropic, and Llama. It features a unified API surface and enterprise-grade management. Pricing is unified under Azure's pay-as-you-go model.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Blackbox AI now presents itself as enterprise inference rather than a consumer coding tool: its pricing page shows a single Enterprise plan with custom, annual, purchase-order committed spend and no free or individual tiers. Pricing is per token against published list rates across a 300+ model catalog served from one OpenAI-compatible endpoint, for example deepseek-v4.1-flash at $0.15 input / $0.60 output per 1M tokens and kimi-k3 at $3.00 / $15.00 per 1M, with commitments drawn down as usage is consumed and spend alerts at 75% and 90%. The same pages state end-to-end encryption on every connection, contractual zero data retention, PII removal before prompts reach closed models, dedicated single-tenant deployment and implementation included at $0 with a forward-deployed engineer.

No free tier stated on official pages (blackbox.ai, blackbox.ai/pricing and docs.blackbox.ai all present enterprise per-token commits only, checked 2026-09-16).

ChatGPT's free tier is available to everyone and is described on the official pricing page as unlimited text chats with GPT-5.6 Luna subject to abuse guardrails, with limited messages when uploading files, limited and slower image generation, limited voice chats, limited deep research, limited memory and context, limited Codex access and limited ChatGPT Work access on desktop. Paid plans are priced per user per month at $8 (Go), $20 (Plus) and $200 (Pro) as announced by OpenAI on 16 January 2026, with Business and Enterprise offered monthly or annually.

No free credit or USD allowance is stated for ChatGPT on the official pricing page or the ChatGPT Go announcement (checked 2026-09-16); the free tier is a feature-limited plan, not a credit.

Chenzk API is a personal/community AI API relay service providing access to mainstream LLMs at normalized market rates. It uses an OpenAI-compatible base URL. Details were checked against the provider's own page at chenzk.top.

No public free-tier information found (researched 2026-08-29).

ClinePass — Cline's flat $9.99/month subscription giving 2-5x the usage (vs standard API rates) on a curated set of open-weight coding models from Z.ai, Moonshot AI, DeepSeek, MiniMax, MiMo, and Qwen. No separate provider accounts or API keys needed; usable with other agents via the ClinePass API key. Separate from Cline's pay-as-you-go provider.

Flat monthly quota (2-5x API rate); not a per-token credit system.

Coze is an all-in-one AI bot building platform that allows users to create and deploy agents with multiple models. It provides a production API for developers to integrate these bots into external applications with usage-based billing.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

DGrid AI is a decentralized AI network that routes requests across a distributed mesh of nodes. It features an OpenAI-compatible gateway and is integrated into tools like Chatbox and Claude Code. Operates with on-chain transparency.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

DIT (AI Token Exchange) is a marketplace for AI model access, offering significant discounts (30-70%) compared to official provider rates. It exposes a single OpenAI-compatible API to 50+ models. Details were checked against the provider's own page at dit.ai.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

GitHub Models was GitHub's hosted model playground, model catalog, inference API and bring-your-own-key service, and GitHub previously presented it as separate from GitHub Copilot. GitHub's official documentation now states that as of July 30, 2026, GitHub Models has been fully retired: the playground, model catalog, inference API and BYOK are no longer available to any customer. The same page directs users needing model access to Azure AI Foundry and users wanting AI workflows on GitHub to GitHub Copilot.

No free tier stated on official pages; GitHub Models was fully retired on July 30, 2026 with no playground, catalog, inference API or BYOK access remaining (checked 2026-09-16).

Huancheng Public API is a high-concurrency AI model router based on the New-API framework. It aggregates multiple upstream providers including OpenAI, Anthropic, and Google, offering a stable and low-latency endpoint for Chinese and global developers with real-time usage monitoring.

No public free-tier information found in the source reference; treat free-tier availability as unverified rather than confirmed absent.

Kilo Gateway is Kilo's OpenAI-compatible inference gateway at base URL https://api.kilo.ai/api/gateway, branded as "The Universal Gateway for AI Inference" and positioned as the routing layer that powers Kilo's own coding tools. It provides one key across 500+ models from 60+ providers, with pay-as-you-go billing at "exact provider rates" and no inference markup, plus BYOK where you "pay only for the routing, not the tokens". Its pricing page lists a Free access tier at $0/forever with access to default free models, basic analytics and BYOK support, and credit purchases carry a 5% processing fee with no subscription required.

No free tier stated on official pages (checked 2026-09-16): Kilo Gateway publishes a Free tier at "$0/forever" giving access to default free models, but no dollar or token credit allowance.

Microsoft Copilot (copilot.microsoft.com) — free consumer Copilot web app with GPT-class chat, web grounding and image generation. Unofficial browser/cookie integration.

A free tier is available; the exact credit value is not quantified.

NanoGPT (nano-gpt.com) is a large-scale AI API aggregator providing access to 1,000+ models with strict 'list price' pay-as-you-go billing. It supports OpenAI-compatible endpoints for text, image, and video models, adding a flat 5% fee only for opt-in features like BYOK or pinned providers.

No public free-tier information found (researched 2026-08-29).

OpenAI's API is per-token with no free tier: GPT-6 Astra $10/$50, GPT-5.6 Sol $4/$20 (promo through Nov 21, 2026), Terra $2/$12 and Luna $0.20/$1.20 per 1M in/out for standard context (<272K), with Batch at 50% off, cached-input pricing, and a +10% data-residency toggle. Images (GPT-Image-2.5) and voice (GPT-Live-1) carry separate token rates.

No free tier on the API (checked 2026-09-16). The consumer ChatGPT free plan is a separate product, not API access.