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LMSpeed

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LMSpeed helps developers compare LLM API price, speed, latency, provider health, and relay risk before they use an endpoint in an app.

About LMSpeed

LMSpeed is a web-based tool designed for developers to compare and test large language model (LLM) APIs. It provides side-by-side comparisons of per-token pricing, speed benchmarks, first-token latency, and provider health across over 100 API providers. The platform includes features such as model leaderboards, a provider directory, a model library, and security audits for OpenAI-compatible endpoints. Users can run custom benchmarks by entering a base URL, API key, and model ID. LMSpeed also offers audit reports to assess API security and relay risks. The service is free for general use, with a paid option for priority provider publishing.

Best for: developers evaluating LLM APIs, AI application builders, API providers

Key features

  • Compares per-token pricing for LLM APIs from over 100 providers
  • Runs real-time speed benchmarks including latency and throughput
  • Performs security audits on OpenAI-compatible endpoints
  • Provides model leaderboards and benchmark scores
  • Allows custom endpoint benchmarks with user-supplied API keys

Use cases

  • Comparing LLM API pricing and free tier availability before integrating into an app
  • Benchmarking API speed and latency for different providers
  • Auditing API endpoints for security and relay risks

Pros

  • Free to use for general API comparison and testing

Limitations

  • Shared test keys are for testing only, not production use

Screenshots

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