Chat
Text completions
Legacy text completions in the OpenAI format: a prompt string instead of messages.
curl -X POST "https://api.pre.dev/v1/completions" \ -H "Content-Type: application/json" \ -d '{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false }'const body = JSON.stringify({ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false})fetch("https://api.pre.dev/v1/completions", { method: "POST", headers: { "Content-Type": "application/json" }, body})package mainimport ( "fmt" "net/http" "io/ioutil" "strings")func main() { url := "https://api.pre.dev/v1/completions" body := strings.NewReader(`{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false }`) req, _ := http.NewRequest("POST", url, body) req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := ioutil.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body))}import requestsurl = "https://api.pre.dev/v1/completions"body = """{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false}"""response = requests.request("POST", url, data = body, headers = { "Content-Type": "application/json"})print(response.text)import java.net.URI;import java.net.http.HttpClient;import java.net.http.HttpRequest;import java.net.http.HttpResponse;import java.net.http.HttpResponse.BodyHandlers;import java.time.Duration;import java.net.http.HttpRequest.BodyPublishers;var body = BodyPublishers.ofString("""{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false}""");HttpClient client = HttpClient.newBuilder() .connectTimeout(Duration.ofSeconds(10)) .build();HttpRequest.Builder requestBuilder = HttpRequest.newBuilder() .uri(URI.create("https://api.pre.dev/v1/completions")) .header("Content-Type", "application/json") .POST(body) .build();try { HttpResponse<String> response = client.send(requestBuilder.build(), BodyHandlers.ofString()); System.out.println("Status code: " + response.statusCode()); System.out.println("Response body: " + response.body());} catch (Exception e) { e.printStackTrace();}using System;using System.Net.Http;using System.Text;var body = new StringContent("""{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false}""", Encoding.UTF8, "application/json");var client = new HttpClient();var response = await client.PostAsync("https://api.pre.dev/v1/completions", body);var responseBody = await response.Content.ReadAsStringAsync();use reqwest::{Result, Client};async fn main() -> Result<()> { let client = Client::new(); let url = "https://api.pre.dev/v1/completions"; let body = r#"{ "model": "deepseek/deepseek-v4.1-flash-1017", "prompt": "The sky is blue because", "max_tokens": 40, "stream": false }"#; let res = client .post(url) .header("Content-Type", "application/json") .body(body) .send() .await? .text() .await?; println!("{}", res); Ok(())}{ "id": "pdg-043293a6-d1a8-4695-81fe-603ad4661ebb", "object": "text_completion", "created": 1790500000, "model": "deepseek/deepseek-v4.1-flash-1017", "choices": [ { "index": 0, "text": " sunlight scatters off air molecules.", "finish_reason": "stop" } ], "usage": { "prompt_tokens": 6, "completion_tokens": 7, "total_tokens": 13 }}The workspace API key (pdk_…) from Integrations → Built-in in the pre.dev dashboard.
In: header
Header Parameters
Attribute this call to one of the workspace's projects. An id the workspace does not own is ignored.
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
Response Body
The completion, or server-sent chunks when stream is true.
TypeScript Definitions
Use the response body type in TypeScript.
application/json
The body is not valid JSON (checked before authentication), or the model rejected the request, for example an unknown model id. Errors from the model keep their status and use the ModelError shape.
TypeScript Definitions
Use the response body type in TypeScript.
The request body is not valid JSON. Checked before authentication.
application/json
Missing or invalid API key.
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
The workspace cannot pay for this request. Nothing was sent to the model and nothing was charged.
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
The request refers to a file, response or video job that is not this workspace's (not_found from pre.dev; nothing ran and nothing was charged), or the model could not serve the request (its own status and message, in the ModelError shape).
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
Too many requests. Wait Retry-After seconds when it is present. A rate_limit_exceeded refusal is per workspace per minute (600, or 30 on the free trial). An error from the model keeps the ModelError shape.
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
Unexpected error.
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
The model did not answer. Retry with backoff, or send models fallbacks.
TypeScript Definitions
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An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.
application/json
The credit balance could not be read, so nothing ran. Retry after Retry-After seconds.
TypeScript Definitions
Use the response body type in TypeScript.
An error raised by pre.dev, in the OpenAI error shape with an extra predev object (absent on catalog_unavailable from the catalog listings). Branch on error.code.