LMSpeed Free Public Model Data API

Create a free LMSpeed API key and query public model metadata, benchmark scores, pricing metrics, and capabilities.

The LMSpeed Free Public Model Data API gives your product read-only access to LMSpeed's public model catalog, speed measurements, pricing summaries, benchmark scores, and model capability metadata. Use this free public API to enrich model directories, provider dashboards, model comparison pages, routing tools, and internal research workflows with data that is already normalized for display.

What You Can Build

Model catalog: list published models with names, slugs, descriptions, developers, release dates, context windows, output limits, documentation links, and lmspeed_url.
Search and discovery: search model names, slugs, and descriptions, then paginate and sort results for model pickers or directory pages.
Model comparison: fetch comparable performance_summary, pricing_summary, benchmark_summary, and optional benchmark details for side-by-side model pages.
Benchmark views: use include=benchmarks to render metric rows, benchmark_groups, category_performance, and nearby_models around each score.
Capability filters: use include=capabilities to get parsed capability keys for filtering models by supported input, output, and reasoning features.
Localized pages: request locale=en, locale=zh, or locale=ru for localized model descriptions while keeping metrics and prices stable.

Available Data

Default list responses include model identity, lmspeed_url, localized description, release and token limits, documentation links, aggregate speed stats, and performance_summary.

Detail responses add pricing_summary and benchmark_summary by default. Optional include sections can expand the response with full public benchmark metrics, benchmark_groups, category_performance, benchmark pricing rows, and capabilities.

Quick Start

Create a free Public API key in LMSpeed settings:

Apply for an API key

Use the key in the x-api-key header. Public keys do not expire and are limited to 1000 requests/day.

Public displays using LMSpeed API data must include a visible backlink to https://lmspeed.net.

Backlink example:

Source: LMSpeed.net (https://lmspeed.net)

Cache responses on your side. Do not send high-volume repeated requests for the same model data; refresh cached data on a reasonable interval for your product.

API Reference

Use the generated OpenAPI pages for complete parameters, response schemas, examples, and errors:

Minimal Request

curl "https://lmspeed.net/api/v1/models?q=deepseek%20v4%20pro&locale=en&page=1&page_size=3" \
  -H "x-api-key: YOUR_PUBLIC_API_KEY"

For richer model data, add include, for example:

curl "https://lmspeed.net/api/v1/models/deepseek-v4-pro?locale=en&include=benchmarks,pricing,capabilities" \
  -H "x-api-key: YOUR_PUBLIC_API_KEY"

include=benchmarks returns the full benchmark metric list plus benchmark_groups for detailed score sections and category_performance for category charts.

Last updated: Jun 29, 2026