Unified AI API access and cost routing

One API Key for Lower-Cost AI Model Access

Use CostRouter to call GPT, Claude, Gemini, DeepSeek, Grok, Qwen and more through a single API Key. Keep familiar SDK or HTTP request formats, replace the Base URL and API Key, and manage model usage and billing in one place.

Lower-cost routes

Cost advantage

Multi-model

Model access

One API Key

Integration

SDK-compatible setupLive model pricingUsage and billing visibility

CostRouter quick start

Review balance, usage cost, API Keys, and integration status in one place.

POST /chat/completions

curl https://costrouter.ai/v1/chat/completions \
  -H 'Authorization: Bearer sk-xxxx' \
  -H 'Content-Type: application/json' \
  -d '{
    "model": "<model-from-models>",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Live route matching

Costlatencyavailability

Explore Models Docs

Transparent billing

Request logs, token usage, refunds, and top-ups stay visible.

Production controls

Set key quotas, expiry, model limits, groups, and IP allowlists.

Multilingual documentation

Quick starts and API references are available across supported interface languages.

Human support

Reach the CostRouter team for account, billing, and integration help.

How CostRouter Handles Each Request

CostRouter receives a compatible API request, matches available model routes, selects a qualified path by price, latency, and availability, then returns a standard response with usage records.

Receive the request

Your application sends a compatible request with a CostRouter API Key. The model name, message payload, and client workflow stay close to the SDK patterns you already use.

Match available routes

CostRouter checks the requested model, endpoint capability, account configuration, and live channel status to find routes that can handle the request.

Select the qualified path

Among eligible routes, CostRouter weighs price, latency, and availability, then prioritizes a lower-cost path only when it meets the required reliability conditions.

Return and record

The response is returned in a compatible format, while request status, token usage, and cost are recorded for usage logs, billing review, and later optimization.

Who is CostRouter for?

Use one model access layer across product experiments, production AI applications, internal tools and agent automation.

Indie Hackers

Build AI products faster with one unified API and less time spent wiring separate provider accounts.

Startups

Scale AI applications with flexible model access, lower token costs and faster model switching.

Enterprise Teams

Manage multi-model API access for enterprise teams with clearer usage, spend and routing controls.

AI Agents

Run reliable model routing for AI agents and automation that depend on speed, cost and availability.

Built for Production API Workloads

CostRouter keeps routing, billing, and access rules visible so cost optimization stays auditable and controllable.

Traceable usage and billing

Review request logs, token usage, final charges, refunds, and billing records from the dashboard.

API Key-level controls

Set quotas, expiration, model limits, IP allowlists, and group routing rules for each API Key.

Route quality safeguards

Routing decisions consider cost, latency, and availability, with account controls for advanced routing behavior.

Clear operating limits

Review supported models, live prices, route availability, and regional restrictions before production use.

Model Access Routing Network

CostRouter organizes multiple model access routes so developers and teams can use compatible AI APIs with clearer pricing, routing controls, and usage visibility.

For Route Providers

If you operate model access routes, regional channels, or volume-based capacity, CostRouter first validates model correctness, response consistency, and delivery quality against professional standards. Only routes that meet the required quality bar are distributed to developers through clear pricing and availability rules.

List supported models and available routes

Set flexible pricing and capacity rules

Reach developers, startups, and enterprise teams

Distribute routes only after quality validation is met

Expand demand without building your own interface

For Developers & Teams

CostRouter gives developers and teams one access layer for supported AI models, with routing designed to balance price, latency, availability, and workload requirements.

Access GPT, Claude, Gemini, DeepSeek, Grok, Qwen, Llama and more

Keep compatible request formats; replace the base URL and API Key

Route requests by price, speed and availability

Switch models without rebuilding your integration

Track usage, spend, and model activity in one place

Frequently Asked Questions

Answers for pricing, compatibility, model routing, partner supply and production use.

Is CostRouter compatible with OpenAI SDKs?

Yes. OpenAI-compatible routes use familiar OpenAI-style request formats. In most cases, you point your existing SDK or HTTP client to the CostRouter base URL and use your CostRouter API Key.

Why can CostRouter be cheaper than official prices?

CostRouter compares qualified routes in real time. When a lower-cost route is available and meets reliability requirements, requests can be sent through that route.

Do I need separate keys for GPT, Claude, Gemini and DeepSeek?

No. A single CostRouter API Key can access multiple supported models. Request formats stay close to the relevant provider style, depending on model capability, account permissions, and route availability.

Can I choose a specific model?

Yes. You can request a specific model by name, or use routing rules that balance price, speed and availability for your workload.

Where can I see all supported models?

Open Models to browse current model availability, provider details, endpoints, groups and pricing information.

Is CostRouter only for developers?

No. It is useful for indie builders, startups, enterprise teams, agent workflows, and route providers that want to publish reliable model capacity.

Can route providers publish their own capacity?

CostRouter is designed so qualified route providers can expose supported models, route availability, pricing, and capacity rules.

Will I need to rewrite my application?

Most SDK or HTTP integrations only need configuration changes: update the base URL and use a CostRouter API Key. More complex workflows can keep existing tools while gradually adopting routing controls.