GPT / Codex CLI / Claude Code / Cursor

AI API Relay Guide

Compare API relay services and model gateways for AI coding tools. We focus on pricing transparency, model coverage, tool compatibility, documentation, privacy risk and verification signals.

View GPT/Codex Ranking Claude Code Ranking Read Risk Guide
8 Screened providers
8 GPT/Codex candidates
6 Scoring dimensions

What is AI API Relay Guide?

AI API Relay Guide is an independent directory for developers comparing AI API relay services, model gateways, and OpenAI-compatible platforms for GPT/Codex CLI, Claude Code, Cursor, Cline, and SDK workflows. We review public pricing pages, model coverage, tool compatibility signals, documentation quality, privacy disclosures, and reputation markers before placing providers in rankings. The site does not sell shared accounts, resell subscriptions, or host user API keys. Candidate services stay clearly labeled until hands-on checks confirm billing rules, model availability, uptime, and privacy behavior.

Reviewed by the AI API Relay Guide editorial team

Last updated:

How are providers reviewed?

  • Six scoring dimensions: price transparency, tool compatibility, model coverage, documentation, privacy disclosure, and reputation stability.
  • Provider pages keep risk notes, official links, and last-checked dates visible.
  • Candidate providers are excluded from the sitemap until they have enough public evidence for normal indexing.

Recommended Providers

Providers closest to AI coding workflows are listed first. Candidate services are marked separately to avoid overstating confidence.

Full ranking

MoleAPI

moleapi.com Claude Code friendly
75

Multi-model API relay with OpenAI-compatible access and explicit positioning for AI coding tools.

Claude CodeCodex CLICursorOpenAI Compatible
Details Website

API易

apiyi.com Claude Code friendly
83

Documentation-heavy API aggregation service with public pricing and a broad model catalog.

Claude CodeCodex CLICursorOpenAI Compatible
Details Website

灵芽 API

api.lingyaai.cn Claude Code friendly
74

AI coding focused relay with visible setup guidance for Claude Code, Codex, and Gemini CLI workflows.

Claude CodeCodex CLICursorOpenAI Compatible
Details Website

OpenRouter

openrouter.ai Global aggregator
85

International model gateway with strong model discovery, public model pages, and OpenAI-compatible APIs.

Codex CLICursorOpenAI Compatible
Details Website

302.AI

302.ai Global aggregator
73

Pay-as-you-go AI tool and API platform with international positioning and public service pages.

Codex CLICursorOpenAI Compatible
Details Website

SiliconFlow

siliconflow.com China model platform
74

High-throughput model platform with strong coverage for Chinese and open-source models.

Codex CLICursorOpenAI Compatible
Details Website

柏拉图 AI

api.bltcy.ai Claude Code friendly
68

Developer-facing relay candidate with wiki content and OpenAI-compatible integration hints.

Claude CodeCodex CLICursorOpenAI Compatible
Details Website

DMXAPI

dmxapi.com.cn Enterprise gateway
64

Enterprise-oriented API gateway and private deployment option for multi-model access and governance.

Codex CLICursorOpenAI Compatible
Details Website

YUNWU.AI / 云雾 API

yunwu.ai Candidate
50

Candidate relay service mentioned by users; needs hands-on verification before ranking.

Claude CodeCodex CLICursorOpenAI Compatible
Details Website

GPT/Codex First Ranking

This ranking prioritizes providers that support Codex CLI or OpenAI-compatible APIs for GPT models, Cursor, Cline, OpenAI SDK and LiteLLM workflows.

Rank Provider Best for Tool compatibility Transparency Total score
#1 OpenRouter
openrouter.ai Global aggregator
Benchmarking model availability, pricing, and a global API gateway baseline.
Codex CLI Cursor Cline
Price 9/10 Docs 9/10 85
#2 API易
apiyi.com Claude Code friendly
Teams that care about documentation, invoices, and visible model/pricing references.
Claude Code Codex CLI Cursor Cline
Price 9/10 Docs 9/10 83
#3 MoleAPI
moleapi.com Claude Code friendly
Developers who want one endpoint for Claude Code, Cursor, Codex CLI, and common OpenAI SDK workflows.
Claude Code Codex CLI Cursor Cline
Price 7/10 Docs 7/10 75
#4 灵芽 API
api.lingyaai.cn Claude Code friendly
Users who primarily need copyable setup steps for AI coding terminals and editors.
Claude Code Codex CLI Cursor Cline
Price 7/10 Docs 8/10 74
#5 SiliconFlow
siliconflow.com China model platform
Low-cost DeepSeek, Qwen, embedding, image, and open model workloads.
Codex CLI Cursor Cline
Price 9/10 Docs 8/10 74
#6 302.AI
302.ai Global aggregator
Users who want both AI tools and API access under one account.
Codex CLI Cursor Cline
Price 8/10 Docs 7/10 73
#7 柏拉图 AI
api.bltcy.ai Claude Code friendly
Users comparing Chinese relay services with coding-tool setup support.
Claude Code Codex CLI Cursor Cline
Price 6/10 Docs 7/10 68
#8 DMXAPI
dmxapi.com.cn Enterprise gateway
Companies that need private deployment, auditability, and a managed API control layer.
Codex CLI Cursor Cline
Price 5/10 Docs 6/10 64

How We Score

The first version combines price transparency, tool compatibility, model coverage, documentation quality, privacy disclosure and reputation signals. We do not claim a service is stable or fastest before hands-on monitoring exists.

What We Do Not Do

We do not sell shared accounts, resell subscriptions, host user API keys or encourage bypassing official platform limits. Provider pages keep risk notes and last-checked dates visible.