CheapYun is a legacy AI API relay service. It is currently reported with degraded performance and minimal public documentation. Details were checked against the provider's own page at cheapyun.cc.cd. Some figures in this entry rest on third-party reports rather than a first-party page.

Service down: HTTP 521 (Cloudflare, origin server down) on both HTTP and HTTPS; no active service, hence no free tier. Searches found nothing on this host.

CheapYun Host1 is a legacy/unclassified endpoint for AI API relaying. It is currently reported as down/degraded and lacks modern documentation. Details were checked against the provider's own page at cheap-host1.cheapyun.com.

Subdomain serves a '帮助网管理系统' (helpdesk/management system), not an AI API relay; no API pricing or free-tier info found. Likely mis-listed.

Cheaper Inference is a low-cost AI model aggregator offering frontier models like GPT-5.4 at significant discounts. It uses an OpenAI-compatible API interface. Details were checked against the provider's own page at cheaperinference.com.

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

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).

Chipotle 'Pepper' is the free, anonymous customer-support chatbot on amelia.chipotle.com, powered by IPsoft Amelia. It requires no login (anonymous sessions) and answers only Chipotle-related questions; off-topic prompts are refused.

Free anonymous support chatbot; no credit system.

Chutes is a decentralized serverless AI inference marketplace on Bittensor (Subnet 64). It provides an OpenAI-compatible API for deploying and scaling open-source models using high-performance VLLM templates, with per-token pricing and optional monthly subscription plans.

Official announcement 2026-02-27: $5-deposit 200-requests/day plan closed to new users, fully retires 2026-03-15; now pay-per-token (or GPU by the second). Bittensor-subsidized cheap models are not a free tier.

Clarifai provides a production-ready AI API for developers, offering an OpenAI-compatible endpoint to run inferences on Clarifai-hosted models from labs like Meta, Google, and Mistral, alongside their own specialized vision and NLP models.

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

OAuth access — sign-in with your existing account. Claude Code (Anthropic) 27 models tracked (via OpenRouter catalog).

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

Claude (claude.ai) web app — Free/Pro/Max consumer plans. Unofficial browser/cookie integration forwarding to Anthropic's hosted Claude models.

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

Claude-ZH (claude-zh.cn) is a third-party relay aggregator optimized for Chinese developers, providing access to Claude models via a homegrown CLI ('lucky') and OpenAI-compatible endpoints with local recharge options.

Mainly a Claude Code Chinese tutorial/docs site; model calls require email signup and /recharge pay-as-you-go top-up; docs mention no free quota — only the tutorials are free.

OAuth access — sign-in with your existing account. Cline (open-source coding agent) This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

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

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.

Cloudflare AI Playground is the web UI for Cloudflare Workers AI, a serverless, edge-hosted inference platform exposing open-weight and partner models (Llama, Qwen, Gemma, GPT-OSS, GLM, DeepSeek, Kimi, Nemotron, Flux) via an OpenAI-compatible API.

Workers AI free tier is a monthly operations allotment, not a quantified USD credit.

Tencent CodeBuddy (CN) — Tencent's AI coding tool (IDE, plugin, CLI) backed by the TokenHub LLM platform. Proxies open-weight models from Z.ai, Moonshot, MiniMax, and DeepSeek under a monthly Token Plan (credit-based). Compatible with Claude Code, Codex CLI, Cline, Cursor, OpenCode, Kilo Code, etc. Note: pricing/model data below is from the documented Tencent Cloud Token Plan pages; CN endpoint specifics (copilot.tencent.com) were not separately fetchable, so this reflects the TokenHub plan as documented.

Credits are the unified billing unit; per-model deduction coefficients apply with DeepSeek peak/off-peak pricing (off-peak = half peak). No clean 1 credit = $X mapping documented, so no creditValueUsd.

CoderPlan is a commercial AI API relay focused on developer tools like Claude Code and Gemini CLI. It provides pay-as-you-go top-up tiers for Chinese developers, claiming to match official API pricing for models like Claude and GPT.

Small signup 'trial credit' whose amount is unstated — not quantified; no sustained free tier. Core is four paid top-up tiers $30/$100(+$5)/$300(+$20)/$500(+$50) with non-expiring credit.

OpenAI Codex cloud coding agent: asynchronous cloud tasks with parallel agents, worktrees, scheduled background jobs (issue triage, CI/CD), available in ChatGPT web, IDE extension, and terminal CLI, all tied to the user's ChatGPT account. Powered by OpenAI frontier coding models (GPT-5.x codex family; newer codex models such as GPT-6 Astra included in Pro/Business allowances per OpenAI's Codex pricing page).

Codex is included in ChatGPT plans including Free and Go with lower usage limits; OpenAI does not publish a dollar value for the free Codex allowance.

Command Code is an AI coding API aggregator offering subscription-based access to a curated selection of open and premium models. It simplifies key management for developers by providing a unified gateway with generous monthly usage limits.

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

Conol (conol.ai) — knowledge-base product with background research/notes agents. Web app forwards to OpenAI models via its model picker (e.g. GPT-6 Astra). Unofficial/experimental.

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

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.

CrofAI is a commercial AI API provider offering unified access to popular open models like Llama 3.1 and Qwen 2.5. It focuses on simplicity and ease of integration for developers requiring reliable per-token billing.

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

Cursor - AI code editor (IDE) with agent mode; routes across frontier providers (OpenAI, Anthropic, Google) plus its own Composer pool and an xAI Grok pool; freemium subscription, on-demand usage billed at upstream model API rates.

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

OAuth access — sign-in with your existing account. Cursor This entry is an access surface/agent — it routes to third-party models rather than hosting its own.

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

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.