OpenAI-compatible
LLM API Gateway
One OpenAI-compatible endpoint for 50+ flagship AI models. Auto-failover across providers, transparent per-token pricing, pay-as-you-go. Built for indie developers and startups shipping fast.
No credit card required · 60-second sign-up · Cancel anytime
Reliable, high-performance AI forwarding — purpose-built for developers
Every feature designed around the same goal: ship faster, pay less, never get stuck on a broken upstream.
100% OpenAI Compatible
Zero code change. Replace base_url with https://api.llmhigh.com/v1 and your existing OpenAI SDK works as-is — Python, Node, Go, anything that speaks the OpenAI API.
Global Edge Network
Distributed nodes across EU / US / APAC. 30–50% lower latency than direct upstream from most regions, with sub-100ms p50 for nearby users.
Multi-Instance Failover
Upstreams go down? We retry across sibling channels automatically. 99.95% uptime SLA on paid plans — zero customer-visible failures in the past three months.
50+ Models, 10+ Providers
OpenAI, Anthropic, Google, DeepSeek, Meta, Mistral, Alibaba, BAAI and more. New flagship models added within one week of community request.
Transparent Per-Token Billing
Flat 30% margin on top of upstream cost. No hidden fees, no monthly minimums, no tiered cliffs. Cost = tokens × published rate. See every line of the bill.
Built for Production
Per-key rate limits, real-time usage dashboard, request-level audit logs, AES-256-GCM encrypted key storage. Drop into Kubernetes and scale.
One endpoint, every flagship model
Pick from 50+ models across 10+ upstream providers — best-in-class for every task, billed transparently per token.
Featured Flagship Models
One endpoint, every model that matters
Pick from 50+ models across 10+ upstream providers — best-in-class for every task, billed transparently per token. Switch with a single header change.
Qwen/Qwen2.5-72B-Instruct
by Alibaba
中文指令、长文档理解、code review
deepseek-ai/DeepSeek-V3
by DeepSeek
链式推理、数学证明、复杂 code
BAAI/bge-m3
by BAAI
多语种 RAG、稠密检索、rerank 准备
Qwen/Qwen2-VL-72B-Instruct
by Alibaba
截图理解、PDF 表单、图表问答
deepseek-ai/DeepSeek-R1
by DeepSeek
数学、code reasoning、o1 同位替代
01-ai/Yi-1.5-34B-Chat
by 01.AI
性价比指令、中文长对话
internlm/internlm2_5-20b-chat
by Shanghai AI Lab
工具调用、多步 agent loop
google/gemma-2-27b-it
by Google
英文任务、低延迟后端
Need a model not listed? Tell us which one — we add new flagship models within a week of request.
Start free. Scale by usage. No surprises.
Pay-as-you-go with a flat 30% margin. Every line itemised. No monthly minimums, no tiered cliffs.
Free Trial
- $10 starter credits (≈ 800K GPT-4o-mini tokens)
- All 50+ models included
- Standard network node
- Email support
Pay-as-you-go
- All 50+ models, all providers
- Priority low-latency node
- Real-time consumption stats
- Stripe, PayPal, crypto top-ups
- Per-key rate limits & alerts
- Full audit logs
- Auto-refill supported
Enterprise
- Volume discounts from 5M+ tokens / day
- Exclusive dedicated node
- Unlimited concurrency
- Custom DPA, BAA, SOC 2 reports
- SLA-backed 99.99% uptime
- Custom rate limits & quotas
- Per-tenant isolated billing
- Dedicated solutions engineer
Drop-in OpenAI replacement — works in 60 seconds
Same SDK, same interface. Only the base_url changes. Pick your language below.
from openai import OpenAI
client = OpenAI(
api_key="YOUR_LLMHIGH_API_KEY",
base_url="https://api.llmhigh.com/v1"
)
response = client.chat.completions.create(
model="Qwen/Qwen2.5-72B-Instruct",
messages=[
{"role": "system", "content": "You are a helpful assistant."},
{"role": "user", "content": "Hello! Introduce your service in one sentence."}
],
temperature=0.7,
max_tokens=512,
)
print(response.choices[0].message.content)
print("Usage:", response.usage.total_tokens, "tokens")Quick answers to the most common questions
Everything you'd want to know before adding LLMHigh to your stack.
Create a free account at llmhigh.com/register — you'll get $10 in credits instantly, no credit card required. Generate your first API key from the console and replace base_url with https://api.llmhigh.com/v1. Production traffic in under 60 seconds.
Yes. /v1/chat/completions, /v1/embeddings, /v1/models, and /v1/usage all match the OpenAI spec byte-for-byte, including streaming via SSE, function calling, JSON mode, and tool use. Switch by changing one URL — your existing client code works as-is.
We offer 50+ models across 10+ providers: OpenAI (GPT-4o, GPT-4o-mini, o1, o1-mini), Anthropic (Claude Sonnet 4.5, Claude Haiku 4.5, Claude Opus 4.1, Claude 3.5 Sonnet/Haiku), Google (Gemini 2.0 Flash, Gemini 1.5 Pro), DeepSeek (V3, R1), Meta (Llama 3.3, Llama 3.1), Alibaba (Qwen 2.5 family), BAAI (bge-m3 embeddings), Mistral and more. New flagship models added within one week of community request.
Pay-as-you-go with no hidden fees. You only pay for tokens used, billed per 1K tokens at published rates. We add a flat 30% margin on top of upstream cost — that's it. Stripe, PayPal, and crypto (USDT/BTC/ETH) top-ups are supported. No monthly minimums, no tiered cliffs, no surprise bills.
End-to-end TLS 1.3 in transit, AES-256-GCM at rest. We never store your prompts or responses unless you explicitly enable request logging for debugging. SOC 2 Type II controls, GDPR / CCPA compliant. Data residency: US, EU, or APAC based on your selected region.
No service interruption. You'll be charged overage rates ($0.0006–$0.0012 per 1K tokens depending on the model) on your saved payment method. You can set per-key hard caps and per-month spending alerts in your dashboard so this is never a surprise. 30-day money-back guarantee on all unused credits.
For each model, we maintain one or more sibling upstream channels. When a request fails with a 5xx, 408, or 429 error, we automatically retry the next channel in priority order. If all channels fail, you get a clear 502 error — never a half-broken response. Circuit breakers open a channel for 30s after 3 consecutive failures to prevent hammering a broken upstream. Streaming responses don't failover mid-flight, but we open a fresh connection on retry.
We don't ship a custom SDK because the OpenAI SDK is the SDK — that's the point. Use any client library that speaks the OpenAI protocol: openai-python, openai-node, openai-go (sashabaranov), the official Java/Kotlin SDK, LangChain, LlamaIndex, Vercel AI SDK, etc. We provide per-language copy-paste examples at /docs, a status API at /api/health/upstream, and a webhook system for billing/quota events signed with HMAC-SHA256.
Still have questions? Email support — typical first response within 4 hours.
OpenAI-compatible API works with any SDK or HTTP client
Drop-in replacement for OpenAI. Same interface, same streaming, same function calling. Switch by changing one URL.
from openai import OpenAI
# Drop-in replacement: change base_url, keep your existing code.
client = OpenAI(
api_key="YOUR_LLMHIGH_API_KEY",
base_url="https://api.llmhigh.com/v1",
)
resp = client.chat.completions.create(
model="Qwen/Qwen2.5-72B-Instruct",
messages=[
{"role": "user", "content": "Hello!"},
],
)
print(resp.choices[0].message.content)Enterprise-Grade Security & Compliance
Your data is protected by industry-leading standards
From encryption in transit and at rest to independent third-party audits, LLMHigh meets the bar enterprise teams expect.
End-to-End Encryption
TLS 1.3 in transit; AES-256 at rest. No prompt or response retention unless you ask.
TLS · AES-256SOC 2 Type II
Independently audited. Trust services criteria verified annually.
AuditedGDPR & CCPA Ready
EU/CA privacy rights supported out of the box. Data residency: US / EU / APAC.
GDPR · CCPAISO 27001
Information security management system certified.
CertifiedReal-time Failover
24/7 monitoring with automatic upstream failover. Target uptime: 99.95%.
99.95% SLAZero-Log Mode
Optional mode that disables request body logging entirely. For regulated workloads.
EnterpriseNeed a custom DPA, BAA, or a single-tenant deployment? Contact our security team — typically respond within one business day.