Benchmark AI API providers before you choose
Compare pricing, speed, and security in one shareable test report.
- Pricingrates / free tiers / coverage
- Speedlatency / throughput / duration
- Securitymodel / prompt / leakage
Pricing, speed, and API security in one workflow
Put per-token pricing, five-round benchmarks, health checks, and safety probes into one workflow before an API reaches your app.
- API Pricing Comparison
Compare per-token pricing across 100+ providers, find cheaper APIs for each model, and track free tiers and credits.
- Real-time Speed Benchmarks
Run a five-round benchmark with standardized prompts to measure first-token latency, output throughput, and response time.
- API Security Audit
Audit any OpenAI-compatible API for model authenticity, hidden prompts, instruction tampering, stream integrity, and error leakage, then share a plain-language report.
- Custom Endpoint Benchmarks
Enter a base URL, API key, and model ID to test official providers, proxies, relays, or self-hosted endpoints.
- Speed Benchmark Analytics
Review first-token latency, output throughput, total duration, health, and recent probe signals to judge stability.
- Real-time Streaming Results
Watch streaming output, progress, and summary results for every prompt so the benchmark is easy to review and share.
Frequently Asked Questions
Learn more about LMSpeed
How do I compare LLM API pricing across providers?
LMSpeed aggregates per-token pricing from 100+ API providers. Visit any model page to see a side-by-side pricing comparison table showing input and output rates per million tokens, so you can find the cheapest provider for each model.
Which LLM APIs are free?
Many providers offer free API tiers or credits for popular models like DeepSeek, Gemini, and Llama. Check our Free LLM API directory for a complete list of models with free access, including speed benchmarks for each free provider.
How does LMSpeed conduct speed benchmark testing?
LMSpeed employs a five-round continuous stress testing mechanism with standardized prompts. Token calculations are performed accurately using tiktoken, measuring output throughput (tokens per second) and first-token latency.
What does the API trust audit check?
It sends multiple safety probes to an OpenAI-compatible endpoint to check whether the model identity matches, hidden system prompts are injected, user instructions are rewritten, streaming responses stay intact, and errors leak sensitive implementation details. The result includes a risk score and a shareable report. API keys are only used for that audit and are not written to public reports.
How to compare speed between different API providers?
Use our performance leaderboards and model detail pages to visually compare API speed benchmarks across providers. The system ranks providers by throughput, latency, and health, helping you choose the fastest and most reliable API.
Is long-term performance monitoring supported?
Provider pages and the health leaderboard already show recent health checks, probe latency, success or failure status, and stability rankings. Broader continuous monitoring and alerting will keep expanding.