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LLM Gateway

LLM Gateway is an open-source API gateway for Large Language Models (LLMs). It acts as a middleware between your applications and various LLM providers, allowing you to: - Route requests to multiple LLM providers (OpenAI, Anthropic, Google AI Studio, and others) - Manage API keys for different providers in one place - Track token usage and costs across all your LLM interactions - Analyze performance metrics to optimize your LLM usage

AI · Founded 2025 · United States

AI
Dev Tools
SaaS
Analytics

Visit llmgateway.io ↗Founder interest ↓

Can you vibecode this?

Kinda

The routing, key management, and analytics core ships in weeks. What pushes this to kinda is the SOC 2 Type II certification already in place — that audit and compliance regime is real overhead, and the 40+ provider integrations are substantial coverage work.

Build This with Leapd →

The business

Total revenue

$1M+

Verified recently

Monthly revenue

$150K+/mo

↑ Growing · 60-day average

Peak month

~$250K

Best single month

Growth

~9×

Early months vs recent

For owners

Own LLM Gateway? List it for sale.

Founders read this page looking for a business to build like your $150K+/mo one — some would rather buy one that already works. They skip the line, you get a clean exit. $25 one-time, no commission.

Why it works

Value proposition
One API key routes requests across 40+ LLM providers with live cost tracking.
Problem
Developers juggle separate API keys and dashboards for every LLM provider.
Audience
Developers and engineering teams building LLM-powered applications.
Business model
Free bring-your-own-keys tier; pay-as-you-go credits with a 5% flat fee on top-ups.

Good to knowFree tierNo credit card requiredSOC 2 Type IIOpen sourceSelf-host optionDevPass

Can you vibecode this?

Kinda

Moat

Switching costs
Proprietary data
Community

Why people pay LLM Gateway

Teams already routing 100B+ tokens through it have accumulated cost history, project-level analytics, and integrated API keys they would lose by switching. The open-source repo has 1.6k GitHub stars and an active developer community that a fresh copy starts without.

Product complexity
Moderate
A web app with API key management, multi-provider routing, cost analytics and guardrails is buildable.
Data
Low
No proprietary datasets needed; all model data comes from connected provider APIs.
Integrations & infrastructure
Moderate
40+ LLM provider APIs connected through customer-supplied keys, plus automatic failover routing.
Human operations
Low
No human delivery; the product is fully software-operated once deployed.
Regulation / hardware
High
SOC 2 Type II certification is required to serve enterprise customers at this trust level.

Build this business

Use the build specification below with any AI coding tool, or build it directly with Leapd.

Build This with Leapd →

Leapd builds

Web app with unified API, key management, cost analytics and guardrails
Pay-as-you-go credit top-ups with a 5% platform fee, charged with Stripe
OpenAI, Anthropic, Google AI Studio and 40+ LLM provider connections
A landing page

Leapd runs

Cold email outreach to potential customers
Meta ads
LinkedIn and X posts
SEO and AI-search visibility
A daily report of what shipped

Opportunity check

Passes: Proven market: $150K+/mo already paid for it
Passes: Proven model: Free tier; pay-as-you-go credits with 5% flat fee on top-ups
Passes: Proven need: Developers need one key for every LLM
Partly: Buildable: Leapd builds the product; the rest is months of work, or an approval you hold

build-spec.txt

Build a cloud-hosted LLM API gateway sold to developers as a unified interface across 40+ LLM providers, with a free bring-your-own-keys tier and pay-as-you-go credits.

Product:
- Unified API endpoint compatible with the OpenAI SDK format; customers change only their base URL
- Provider API key vault: store, manage and rotate keys for each connected LLM provider
- Request router that selects a provider and model per request, with automatic failover to healthy providers
- Real-time cost and token tracking per request, model and provider, viewable over 7 or 30-day windows
- Per-project usage explorer showing requests, tokens, spend, errors and cache hit rate
- LLM guardrails to detect prompt injection, flag PII and block malicious requests
- Enterprise audit logs recording every action with actor, timestamp and resource
- Free bring-your-own-keys plan with full routing and analytics at no cost

Billing:
- Pay-as-you-go credit top-ups charged through Stripe with a 5% flat platform fee; no subscription, no token markup.

Integrations:
- OpenAI, Anthropic, Google AI Studio, Google Vertex AI, AWS Bedrock, Azure OpenAI, Groq, Mistral AI, DeepSeek, Fireworks AI, Perplexity and 30+ additional LLM providers, connected through their APIs using the customer's own credentials.