KeepRouter

KeepRouter is a cloud API gateway that puts models from multiple providers behind one account. It is best for developers who want OpenAI- or Anthropic-compatible routes and public per-model rates without a recurring subscription. Prepaid usage and model-by-model endpoint support are its main trade-offs.

Overview

KeepRouter’s production catalog contains 101 models from multiple makers, with customer prices and supported endpoints shown for each model. That breadth is useful when an application may switch providers or modalities without maintaining separate billing accounts and integrations. It remains a model-access service rather than a full business-activity analytics system: consumer and latency analytics are available, while business activity metrics are not.

Requests run on Cloudflare’s global edge network. KeepRouter says customer data is not used to train models, and business customers can contact support about a DPA. Paddle acts as Merchant of Record for top-ups, invoices and tax, which centralizes payment administration but keeps spending tied to prepaid credit.

Key features

Familiar chat APIs

Supported chat models accept OpenAI Chat Completions requests at /v1/chat/completions. Other supported chat models accept Anthropic Messages requests at /v1/messages, including use with Claude Code and the Anthropic SDK. Existing integrations can therefore keep familiar request formats, although endpoint compatibility is model-specific and should be checked before routing production traffic.

Broad model and modality catalog

The catalog covers text, image, video and speech-output models. Pricing units change with the modality: text is measured by tokens, while image, video and speech models use image, token or duration-based billing as applicable. This flexibility helps teams match a model to a workload, but it makes cost estimates less uniform than an all-token service.

Free endpoint

The model named free charges $0.0000 per 1M input tokens and $0.0000 per 1M output tokens. It supports chat completions, streaming where supported and tool calling where supported. It is a practical option for experiments and evaluations, but the Free plan is explicitly best-effort, so it should not be treated as a guaranteed production capacity tier.

Security, logs and caching

API keys can be restricted to model allowlists, helping separate credentials by workload. The raw sk-kr- key is displayed only at creation, so it must be stored safely at that point. Keys are retained as SHA-256 hashes, and API traffic uses HTTPS with TLS.

Request logs capture timestamp, model, route, HTTP status, token counts, cost, cache state and latency without storing prompt or completion bodies. That is strong operational visibility with less content exposure, though it is not prompt-level tracing. Response caching is off by default; when enabled, identical non-streaming requests may be cached transiently in Cloudflare KV, which can reduce repeat costs but requires care with freshness.

Developer integrations

The Free model documentation provides configuration paths for OpenCode and Continue using KeepRouter’s OpenAI-compatible base URL. Support is available by email, including vulnerability reports and DPA discussions.

Pricing

Free

The Free plan costs free, with no monthly fee and $0 per input and output token. It is aimed at testing, prototyping and evaluation. Its best-effort nature makes it a poor choice when an application needs dependable capacity or a service-level commitment.

Pay-as-you-go

Pay-as-you-go uses prepaid USD credit at each model’s published rate and has no recurring subscription. Text is billed per token; image models by image or token; and video and speech output by duration. There is no free trial, so paid experimentation requires topping up first. This structure suits variable workloads and teams that prefer not to renew a subscription, but spending discipline depends on selecting the right model and unit for every request.

Platforms

KeepRouter is delivered as a cloud service through API and web access. It is not a self-hosted deployment, so infrastructure remains managed on the provider’s edge network.

Who it's for

Choose KeepRouter if you are building software that may use models from several providers, want one credential and billing relationship, or need to preserve OpenAI and Anthropic request conventions. The public catalog and allowlisted keys are also useful for teams comparing models while keeping access scoped.

Look elsewhere if your priority is a recurring fixed-price plan, guaranteed free-tier capacity, prompt-and-completion retention for deep debugging, or business activity metrics. The service’s strongest value is flexible model access, not a complete analytics suite or a committed subscription quota.

Pros and cons

Pros

• One gateway for 101 models: reduces the need to integrate and fund each provider separately.
• OpenAI and Anthropic routes: lets compatible applications use established request formats, including Claude Code and the Anthropic SDK.
• Modality coverage: text, image, video and speech options support varied application workloads.
• Useful operational logs: cost, tokens, latency, status and cache state are recorded without prompt bodies.
• No recurring subscription: prepaid billing aligns charges with actual model usage.

Cons

• Best-effort free tier: the zero-cost model is suited to evaluation, not assured production service.
• Variable billing units: modality-specific pricing complicates forecasting across a mixed workload.
• Endpoint differences: not every model necessarily supports the same interface, so routing choices require checking compatibility.
• No business activity metrics: organizations seeking broader business analytics need another product.
• No prompt-body logging: privacy is improved, but debugging content-dependent failures is less direct.

Alternatives

Apirelio is a better fit for API analytics teams wanting a 14-day trial, project and member limits, and a paid Growth plan at $19 a month rather than model-routing credit.

Revenium suits buyers who need transaction observation, with a free Observe plan covering 100,000 transactions per month and seven days of retention.

BetterMeter is a simpler choice for API and web event measurement with a free plan offering 30-day event retention.

Clavio is aimed at web-based analysis, with sample datasets, file uploads and core charting on its free plan.

Helicone is the alternative for teams that want an open-source API observability product with hosted and self-hosted options.

Langfuse is better suited to teams seeking open deployment choices and a free allowance of 50k units per month with 30 days of data access.

Moesif is designed for API analytics with a free tier following its trial and a Growth offering built around high event volumes.

AI Nazar is the alternative for buyers who specifically want an MIT-licensed open-source SDK and dashboard.

For a wider category comparison, see API Analytics Software.

Verdict

KeepRouter is a strong choice for developers who want one cloud gateway, familiar OpenAI or Anthropic interfaces, and access to many models under prepaid usage. Choose it for integration flexibility and transparent per-model billing; look elsewhere when guaranteed capacity, recurring-plan simplicity, prompt-level traces or broader business analytics matter more than provider consolidation.