What is an AI API relay, and why do I need one?

An AI API relay (also called an API reseller) resells access to large model APIs from providers like OpenAI, Anthropic (Claude), and Google (Gemini). You top up with the relay directly and start calling the API right away, skipping the friction of setting up an official account yourself.

Why are relay prices sometimes cheaper than official?

Not every relay is cheaper than the official price. What matters is the "multiplier" — for example, a 2x multiplier means a $1 official call costs you $2.

Are API relays safe to use?

A legitimate relay's reliability is close to the official API. Test with a small deposit first, spread usage across 2-3 relays as backup, and route sensitive data through the official API directly.

What does "minimum deposit" mean?

The minimum deposit is the smallest amount you can top up in a single transaction — for example, "pay-as-you-go, $10 minimum" means your first top-up has to be at least $10.

Is 天枢 (tian-shu.org) any good?

tian-shu.org

Visit 天枢 (tian-shu.org)

Supported Models

OpenAI, Claude, Gemini, Chinese LLMs

Payment Methods

WeChat Pay, Alipay, USDT

Min. Deposit

$0.14

Free Credits

—

Availability

Recently available

Price Level

—

Model Authenticity Check

Not yet covered

Refund Policy

Not yet covered

Invoicing

Not yet covered

Supported Models	OpenAI, Claude, Gemini, Chinese LLMs
Payment Methods	WeChat Pay, Alipay, USDT
Min. Deposit	$0.14
Subscription Plans	—
Tags	—
Website	tian-shu.org

天枢 (tian-shu.org) Model Pricing

Pricing note:Prices are converted from CNY list prices at $1 ≈ ¥7; actual cost depends on each relay's top-up exchange rate. Pricing varies widely between groups on the same relay — ultra-cheap groups are often Kiro or reverse-engineered channels with stability and model-authenticity risks.

Model	Group	Channel	Multiplier	Input $/M	Output $/M
claude-fable-5	claude-kiro	Kiro	×0.25	$2.5	$12.5
	claude-cconly	Code-only	×0.8	$8	$40
	claude-max	Max Plan	×1	$10	$50
claude-haiku-4-5-20251001	claude-kiro	Kiro	×0.25	$0.25	$1.25
	claude-cconly	Code-only	×0.8	$0.8	$4
	claude-max	Max Plan	×1	$1	$5
claude-haiku-4-5-20251016	claude-cconly	Code-only	×0.8	$0.8	$4
claude-opus-4-6	claude-kiro	Kiro	×0.25	$1.25	$6.25
	claude-cconly	Code-only	×0.8	$4	$20
	claude-max	Max Plan	×1	$5	$25
claude-opus-4-7	claude-kiro	Kiro	×0.25	$1.25	$6.25
	claude-cconly	Code-only	×0.8	$4	$20
	claude-max	Max Plan	×1	$5	$25
claude-opus-4-8	claude-kiro	Kiro	×0.25	$1.25	$6.25
	claude-cconly	Code-only	×0.8	$4	$20
	claude-max	Max Plan	×1	$5	$25
claude-opus-5	claude-kiro	Kiro	×0.25	$1.25	$6.25
	claude-cconly	Code-only	×0.8	$4	$20
	claude-max	Max Plan	×1	$5	$25
claude-sonnet-4-5-20250929	claude-cconly	Code-only	×0.8	$2.4	$12
claude-sonnet-4-6	claude-kiro	Kiro	×0.25	$0.75	$3.75
	claude-cconly	Code-only	×0.8	$2.4	$12
	claude-max	Max Plan	×1	$3	$15
claude-sonnet-5	claude-kiro	Kiro	×0.25	$0.75	$3.75
	claude-cconly	Code-only	×0.8	$2.4	$12
	claude-max	Max Plan	×1	$3	$15
gemini-2.5-flash	gemini	Unlabeled	×0.42	$0.126	$1.05
gemini-2.5-pro	gemini	Unlabeled	×0.42	$0.525	$4.2
gemini-3-flash-preview	gemini	Unlabeled	×0.42	$0.21	$1.26
gemini-3.1-flash-lite	gemini	Unlabeled	×0.42	$0.105	$0.63
gemini-3.1-pro	gemini	Unlabeled	×0.42	$0.84	$5.04
gemini-3.1-pro-preview-low	gemini	Unlabeled	×0.42	$0.84	$5.04
gemini-3.5-flash	gemini	Unlabeled	×0.42	$0.63	$3.78
gpt-5.3-codex-spark	codex-pro	Code-only	×0.18	$0.315	$2.52
gpt-5.3-codex-spark	gpt-pro-stable	Unlabeled	×0.3	$0.525	$4.2
gpt-5.3-codex-spark-openai-compact	gpt-pro-stable	Unlabeled	×0.3	$0.525	$4.2
gpt-5.4	codex-team	Code-only	×0.09	$0.225	$1.35
	codex-plus	Code-only	×0.1	$0.25	$1.5
	codex-pro	Code-only	×0.18	$0.45	$2.7
	gpt-pro-stable	Unlabeled	×0.3	$0.75	$4.5
gpt-5.4-mini	codex-team	Code-only	×0.09	$0.068	$0.405
	codex-plus	Code-only	×0.1	$0.075	$0.45
	codex-pro	Code-only	×0.18	$0.135	$0.81
	gpt-pro-stable	Unlabeled	×0.3	$0.225	$1.35
	codex-free	Code-only	×1	$0.75	$4.5
gpt-5.4-mini-openai-compact	gpt-pro-stable	Unlabeled	×0.3	$0.225	$1.35
gpt-5.4-openai-compact	gpt-pro-stable	Unlabeled	×0.3	$0.75	$4.5
gpt-5.5	codex-team	Code-only	×0.09	$0.45	$2.7
	codex-plus	Code-only	×0.1	$0.5	$3
	codex-pro	Code-only	×0.18	$0.9	$5.4
	gpt-pro-stable	Unlabeled	×0.3	$1.5	$9
	codex-free	Code-only	×1	$5	$30
gpt-5.5-openai-compact	gpt-pro-stable	Unlabeled	×0.3	$1.5	$9
gpt-5.5-openai-compact	codex-free	Code-only	×1	$5	$30
gpt-5.6-luna	gpt-pro-stable	Unlabeled	×0.3	$0.06	$0.36
gpt-5.6-sol	codex-team	Code-only	×0.09	$0.45	$2.7
	codex-plus	Code-only	×0.1	$0.5	$3
	codex-pro	Code-only	×0.18	$0.9	$5.4
	gpt-pro-stable	Unlabeled	×0.3	$1.5	$9
gpt-5.6-terra	codex-team	Code-only	×0.09	$0.18	$1.08
	codex-plus	Code-only	×0.1	$0.2	$1.2
	codex-pro	Code-only	×0.18	$0.36	$2.16
	gpt-pro-stable	Unlabeled	×0.3	$0.6	$3.6
gpt-image-2	生图专用	Unlabeled	×1.2	$0.144/call
grok-4.5	grok	Unlabeled	×1	$0.156/call

claude-fable-5

claude-kiroKiro

In $2.5/MOut $12.5/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $8/MOut $40/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $10/MOut $50/M

Multiplier: ×1Visit

claude-haiku-4-5-20251001

claude-kiroKiro

In $0.25/MOut $1.25/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $0.8/MOut $4/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $1/MOut $5/M

Multiplier: ×1Visit

claude-haiku-4-5-20251016

claude-cconlyCode-only

In $0.8/MOut $4/M

Multiplier: ×0.8Visit

claude-opus-4-6

claude-kiroKiro

In $1.25/MOut $6.25/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $4/MOut $20/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $5/MOut $25/M

Multiplier: ×1Visit

claude-opus-4-7

claude-kiroKiro

In $1.25/MOut $6.25/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $4/MOut $20/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $5/MOut $25/M

Multiplier: ×1Visit

claude-opus-4-8

claude-kiroKiro

In $1.25/MOut $6.25/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $4/MOut $20/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $5/MOut $25/M

Multiplier: ×1Visit

claude-opus-5

claude-kiroKiro

In $1.25/MOut $6.25/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $4/MOut $20/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $5/MOut $25/M

Multiplier: ×1Visit

claude-sonnet-4-5-20250929

claude-cconlyCode-only

In $2.4/MOut $12/M

Multiplier: ×0.8Visit

claude-sonnet-4-6

claude-kiroKiro

In $0.75/MOut $3.75/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $2.4/MOut $12/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $3/MOut $15/M

Multiplier: ×1Visit

claude-sonnet-5

claude-kiroKiro

In $0.75/MOut $3.75/M

Multiplier: ×0.25Visit

claude-cconlyCode-only

In $2.4/MOut $12/M

Multiplier: ×0.8Visit

claude-maxMax Plan

In $3/MOut $15/M

Multiplier: ×1Visit

gemini-2.5-flash

geminiUnlabeled

In $0.126/MOut $1.05/M

Multiplier: ×0.42Visit

gemini-2.5-pro

geminiUnlabeled

In $0.525/MOut $4.2/M

Multiplier: ×0.42Visit

gemini-3-flash-preview

geminiUnlabeled

In $0.21/MOut $1.26/M

Multiplier: ×0.42Visit

gemini-3.1-flash-lite

geminiUnlabeled

In $0.105/MOut $0.63/M

Multiplier: ×0.42Visit

gemini-3.1-pro

geminiUnlabeled

In $0.84/MOut $5.04/M

Multiplier: ×0.42Visit

gemini-3.1-pro-preview-low

geminiUnlabeled

In $0.84/MOut $5.04/M

Multiplier: ×0.42Visit

gemini-3.5-flash

geminiUnlabeled

In $0.63/MOut $3.78/M

Multiplier: ×0.42Visit

gpt-5.3-codex-spark

codex-proCode-only

In $0.315/MOut $2.52/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $0.525/MOut $4.2/M

Multiplier: ×0.3Visit

gpt-5.3-codex-spark-openai-compact

gpt-pro-stableUnlabeled

In $0.525/MOut $4.2/M

Multiplier: ×0.3Visit

gpt-5.4

codex-teamCode-only

In $0.225/MOut $1.35/M

Multiplier: ×0.09Visit

codex-plusCode-only

In $0.25/MOut $1.5/M

Multiplier: ×0.1Visit

codex-proCode-only

In $0.45/MOut $2.7/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $0.75/MOut $4.5/M

Multiplier: ×0.3Visit

gpt-5.4-mini

codex-teamCode-only

In $0.068/MOut $0.405/M

Multiplier: ×0.09Visit

codex-plusCode-only

In $0.075/MOut $0.45/M

Multiplier: ×0.1Visit

codex-proCode-only

In $0.135/MOut $0.81/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $0.225/MOut $1.35/M

Multiplier: ×0.3Visit

codex-freeCode-only

In $0.75/MOut $4.5/M

Multiplier: ×1Visit

gpt-5.4-mini-openai-compact

gpt-pro-stableUnlabeled

In $0.225/MOut $1.35/M

Multiplier: ×0.3Visit

gpt-5.4-openai-compact

gpt-pro-stableUnlabeled

In $0.75/MOut $4.5/M

Multiplier: ×0.3Visit

gpt-5.5

codex-teamCode-only

In $0.45/MOut $2.7/M

Multiplier: ×0.09Visit

codex-plusCode-only

In $0.5/MOut $3/M

Multiplier: ×0.1Visit

codex-proCode-only

In $0.9/MOut $5.4/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $1.5/MOut $9/M

Multiplier: ×0.3Visit

codex-freeCode-only

In $5/MOut $30/M

Multiplier: ×1Visit

gpt-5.5-openai-compact

gpt-pro-stableUnlabeled

In $1.5/MOut $9/M

Multiplier: ×0.3Visit

codex-freeCode-only

In $5/MOut $30/M

Multiplier: ×1Visit

gpt-5.6-luna

gpt-pro-stableUnlabeled

In $0.06/MOut $0.36/M

Multiplier: ×0.3Visit

gpt-5.6-sol

codex-teamCode-only

In $0.45/MOut $2.7/M

Multiplier: ×0.09Visit

codex-plusCode-only

In $0.5/MOut $3/M

Multiplier: ×0.1Visit

codex-proCode-only

In $0.9/MOut $5.4/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $1.5/MOut $9/M

Multiplier: ×0.3Visit

gpt-5.6-terra

codex-teamCode-only

In $0.18/MOut $1.08/M

Multiplier: ×0.09Visit

codex-plusCode-only

In $0.2/MOut $1.2/M

Multiplier: ×0.1Visit

codex-proCode-only

In $0.36/MOut $2.16/M

Multiplier: ×0.18Visit

gpt-pro-stableUnlabeled

In $0.6/MOut $3.6/M

Multiplier: ×0.3Visit

gpt-image-2

生图专用Unlabeled

$0.144/call

Multiplier: ×1.2Visit

grok-4.5

grokUnlabeled

$0.156/call

Multiplier: ×1Visit