> ## Documentation Index > Fetch the complete documentation index at: https://data.ornn.com/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get a public daily series > Daily index series for a public GPU. Without a key, the free tier covers 5 GPUs — `H100 SXM`, `H200`, `B200`, `A100 SXM4`, `RTX 5090` — for the trailing 3 months (the same window charted for free on index.ornn.com); any other GPU (e.g. `RTX PRO 6000 WS`) requires a key. Pass your API key to unlock the full history back to the earliest available data. The response includes `access: "public-3mo" | "full"`. Rate-limited per IP for anonymous callers. ## Overview Daily index series for a public GPU. Without a key, the free tier covers 5 GPUs - `H100 SXM`, `H200`, `B200`, `A100 SXM4`, `RTX 5090` - for the trailing 3 months (the same window charted for free on index.ornn.com); any other GPU (e.g. `RTX PRO 6000 WS`) requires a key. Pass your API key to unlock the full history back to the earliest available data. The response includes `access: "public-3mo" | "full"`. Rate-limited per IP for anonymous callers. ## OpenAPI ````yaml openapi.yaml GET /api/gpu/{gpuName}/index-history openapi: 3.1.0 info: title: Ornn Data API version: 1.0.0 description: > Read-only REST API for GPU and memory market data. The price index is the going rate of compute in USD per GPU-hour, a weighted average of all verified compute transactions across the market. servers: - url: https://api.ornnai.com security: - bearerAuth: [] tags: - name: Current Prices - name: Historical Prices - name: Analytics - name: Memory - name: Token Prices - name: Workload Cost - name: LLM Coding - name: Neo-Cloud Sites - name: Reference paths: /api/gpu/{gpuName}/index-history: get: tags: - Historical Prices summary: Get a public daily series description: > Daily index series for a public GPU. Without a key, the free tier covers 5 GPUs — `H100 SXM`, `H200`, `B200`, `A100 SXM4`, `RTX 5090` — for the trailing 3 months (the same window charted for free on index.ornn.com); any other GPU (e.g. `RTX PRO 6000 WS`) requires a key. Pass your API key to unlock the full history back to the earliest available data. The response includes `access: "public-3mo" | "full"`. Rate-limited per IP for anonymous callers. parameters: - $ref: '#/components/parameters/gpuName' - name: startDate in: query description: >- ISO 8601. Anonymous callers are clamped to 3 months ago; an API key lets startDate reach as far back as data exists. schema: type: string example: '2026-05-01' - name: endDate in: query description: ISO 8601. Defaults to now. schema: type: string example: '2026-05-31' responses: '200': description: Daily series. content: application/json: example: success: true gpu_type: H100 SXM access: public-3mo data: - timestamp: '2026-01-01T00:00:00.000Z' index_value: 2 - timestamp: '2026-01-02T00:00:00.000Z' index_value: 2 '400': $ref: '#/components/responses/BadRequest' '429': description: Rate limit exceeded. Back off and cache responses. security: [] x-codeSamples: - lang: bash label: cURL source: > curl "https://api.ornnai.com/api/gpu/H100%20SXM/index-history?startDate=2026-05-01&endDate=2026-05-31" - lang: python label: Python source: | import requests resp = requests.get( "https://api.ornnai.com/api/gpu/H100 SXM/index-history", params={"startDate": "2026-05-01", "endDate": "2026-05-31"}, ) - lang: javascript label: JavaScript source: | const res = await fetch( "https://api.ornnai.com/api/gpu/H100 SXM/index-history?startDate=2026-05-01&endDate=2026-05-31", ); const data = await res.json(); - lang: php label: PHP source: | true, ]); $data = json_decode(curl_exec($ch), true); - lang: go label: Go source: "package main\n\nimport (\n\t\"io\"\n\t\"net/http\"\n\t\"net/url\"\n)\n\nfunc main() {\n\tendpoint := \"https://api.ornnai.com/api/gpu/\" + url.PathEscape(\"H100 SXM\") +\n\t\t\"/index-history?startDate=2026-05-01&endDate=2026-05-31\"\n\treq, _ := http.NewRequest(\"GET\", endpoint, nil)\n\tresp, _ := http.DefaultClient.Do(req)\n\tdefer resp.Body.Close()\n\tbody, _ := io.ReadAll(resp.Body)\n\t_ = body\n}\n" - lang: java label: Java source: > import java.net.URI; import java.net.http.HttpClient; import java.net.http.HttpRequest; import java.net.http.HttpResponse; HttpClient client = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder( URI.create("https://api.ornnai.com/api/gpu/H100%20SXM/index-history?startDate=2026-05-01&endDate=2026-05-31")) .build(); HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString()); - lang: ruby label: Ruby source: > require "net/http" require "json" uri = URI("https://api.ornnai.com/api/gpu/H100%20SXM/index-history?startDate=2026-05-01&endDate=2026-05-31") res = Net::HTTP.get_response(uri) data = JSON.parse(res.body) components: parameters: gpuName: name: gpuName in: path required: true description: A supported GPU model. URL-encode spaces. schema: type: string enum: - H100 SXM - H200 - A100 SXM4 - B200 - RTX 5090 - RTX PRO 6000 WS example: H100 SXM responses: BadRequest: description: A required parameter is missing or invalid. content: application/json: schema: $ref: '#/components/schemas/Error' schemas: Error: type: object properties: error: type: string example: Bad request message: type: string example: >- Invalid GPU type. Allowed: H100 SXM, H200, A100 SXM4, RTX 5090, B200, RTX PRO 6000 WS securitySchemes: bearerAuth: type: http scheme: bearer description: API key passed as a Bearer token. Create one in the dashboard. ````