Add the Public AI Inference Utility as an inference provider (#1743)

This PR adds Public AI as a new inference provider for conversational
tasks.
Base URL: https://api.publicai.co
Developer Docs: https://platform.publicai.co
Route: /v1/chat/completions (OpenAI compatible)

---------

Co-authored-by: Simon Brandeis <33657802+SBrandeis@users.noreply.github.com>

Author: jolow99

packages/inference/README.md

@@ -56,6 +56,7 @@ Currently, we support the following providers:
 - [Novita](https://novita.ai)
 - [Nscale](https://nscale.com)
 - [OVHcloud](https://endpoints.ai.cloud.ovh.net/)
+- [Public AI](https://publicai.co)
 - [Replicate](https://replicate.com)
 - [Sambanova](https://sambanova.ai)
 - [Scaleway](https://www.scaleway.com/en/generative-apis/)

packages/inference/src/lib/getProviderHelper.ts

@@ -12,6 +12,7 @@ import * as Novita from "../providers/novita.js";
 import * as Nscale from "../providers/nscale.js";
 import * as OpenAI from "../providers/openai.js";
 import * as OvhCloud from "../providers/ovhcloud.js";
+import * as PublicAI from "../providers/publicai.js";
 import type {
 	AudioClassificationTaskHelper,
 	AudioToAudioTaskHelper,
@@ -139,6 +140,9 @@ export const PROVIDERS: Record<InferenceProvider, Partial<Record<InferenceTask,
 		conversational: new OvhCloud.OvhCloudConversationalTask(),
 		"text-generation": new OvhCloud.OvhCloudTextGenerationTask(),
 	},
+	publicai: {
+		conversational: new PublicAI.PublicAIConversationalTask(),
+	},
 	replicate: {
 		"text-to-image": new Replicate.ReplicateTextToImageTask(),
 		"text-to-speech": new Replicate.ReplicateTextToSpeechTask(),

packages/inference/src/providers/consts.ts

@@ -31,6 +31,7 @@ export const HARDCODED_MODEL_INFERENCE_MAPPING: Record<
 	novita: {},
 	nscale: {},
 	openai: {},
+	publicai: {},
 	ovhcloud: {},
 	replicate: {},
 	sambanova: {},

packages/inference/src/providers/publicai.ts

@@ -0,0 +1,7 @@
+import { BaseConversationalTask } from "./providerHelper.js";
+
+export class PublicAIConversationalTask extends BaseConversationalTask {
+	constructor() {
+		super("publicai", "https://api.publicai.co");
+	}
+}

packages/inference/src/types.ts

@@ -59,6 +59,7 @@ export const INFERENCE_PROVIDERS = [
 	"nscale",
 	"openai",
 	"ovhcloud",
+	"publicai",
 	"replicate",
 	"sambanova",
 	"scaleway",

packages/inference/test/InferenceClient.spec.ts

@@ -2238,4 +2238,57 @@ describe.skip("InferenceClient", () => {
 		},
 		TIMEOUT
 	);
+
+	describe.concurrent(
+		"PublicAI",
+		() => {
+			const client = new InferenceClient(env.HF_PUBLICAI_KEY ?? "dummy");
+
+			HARDCODED_MODEL_INFERENCE_MAPPING["publicai"] = {
+				"swiss-ai/Apertus-8B-Instruct-2509": {
+					provider: "publicai",
+					hfModelId: "swiss-ai/Apertus-8B-Instruct-2509",
+					providerId: "swiss-ai/apertus-8b-instruct",
+					status: "live",
+					task: "conversational",
+				},
+			};
+
+			it("chatCompletion", async () => {
+				const res = await client.chatCompletion({
+					model: "swiss-ai/Apertus-8B-Instruct-2509",
+					provider: "publicai",
+					messages: [{ role: "user", content: "Complete this sentence with words, one plus one is equal " }],
+				});
+				if (res.choices && res.choices.length > 0) {
+					const completion = res.choices[0].message?.content;
+					expect(completion).toContain("two");
+				}
+			});
+
+			it("chatCompletion stream", async () => {
+				const stream = client.chatCompletionStream({
+					model: "swiss-ai/Apertus-8B-Instruct-2509",
+					provider: "publicai",
+					messages: [{ role: "user", content: "Say 'this is a test'" }],
+					stream: true,
+				}) as AsyncGenerator<ChatCompletionStreamOutput>;
+
+				let fullResponse = "";
+				for await (const chunk of stream) {
+					if (chunk.choices && chunk.choices.length > 0) {
+						const content = chunk.choices[0].delta?.content;
+						if (content) {
+							fullResponse += content;
+						}
+					}
+				}
+
+				// Verify we got a meaningful response
+				expect(fullResponse).toBeTruthy();
+				expect(fullResponse.length).toBeGreaterThan(0);
+			});
+		},
+		TIMEOUT
+	);
 });