feat: add Featherless AI as a provider

- Add Featherless to provider names list
- Create Featherless model types with popular models
- Implement FeatherlessHandler using OpenAI-compatible API
- Add Featherless schema and configuration
- Wire up Featherless in API handler

Closes #7237

Author: roomote

packages/types/src/provider-settings.ts

@@ -48,6 +48,7 @@ export const providerNames = [
 	"fireworks",
 	"io-intelligence",
 	"roo",
+	"featherless",
 ] as const
 
 export const providerNamesSchema = z.enum(providerNames)
@@ -293,6 +294,10 @@ const rooSchema = apiModelIdProviderModelSchema.extend({
 	// No additional fields needed - uses cloud authentication
 })
 
+const featherlessSchema = apiModelIdProviderModelSchema.extend({
+	featherlessApiKey: z.string().optional(),
+})
+
 const defaultSchema = z.object({
 	apiProvider: z.undefined(),
 })
@@ -330,6 +335,7 @@ export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProv
 	fireworksSchema.merge(z.object({ apiProvider: z.literal("fireworks") })),
 	ioIntelligenceSchema.merge(z.object({ apiProvider: z.literal("io-intelligence") })),
 	rooSchema.merge(z.object({ apiProvider: z.literal("roo") })),
+	featherlessSchema.merge(z.object({ apiProvider: z.literal("featherless") })),
 	defaultSchema,
 ])
 
@@ -367,6 +373,7 @@ export const providerSettingsSchema = z.object({
 	...fireworksSchema.shape,
 	...ioIntelligenceSchema.shape,
 	...rooSchema.shape,
+	...featherlessSchema.shape,
 	...codebaseIndexProviderSchema.shape,
 })
 

packages/types/src/providers/featherless.ts

@@ -0,0 +1,81 @@
+import type { ModelInfo } from "../model.js"
+
+// Featherless AI models - https://api.featherless.ai/v1/models
+export type FeatherlessModelId = keyof typeof featherlessModels
+
+export const featherlessDefaultModelId: FeatherlessModelId = "meta-llama/Meta-Llama-3.1-8B-Instruct"
+
+export const featherlessModels = {
+	"meta-llama/Meta-Llama-3.1-8B-Instruct": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.1,
+		outputPrice: 0.1,
+		description: "Meta's Llama 3.1 8B Instruct model with 128K context window",
+	},
+	"meta-llama/Meta-Llama-3.1-70B-Instruct": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.4,
+		outputPrice: 0.4,
+		description: "Meta's Llama 3.1 70B Instruct model with 128K context window",
+	},
+	"meta-llama/Meta-Llama-3.1-405B-Instruct": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 2.0,
+		outputPrice: 2.0,
+		description: "Meta's largest Llama 3.1 405B Instruct model with 128K context window",
+	},
+	"Qwen/Qwen2.5-72B-Instruct": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.4,
+		outputPrice: 0.4,
+		description: "Alibaba's Qwen 2.5 72B Instruct model with 128K context window",
+	},
+	"mistralai/Mistral-7B-Instruct-v0.3": {
+		maxTokens: 8192,
+		contextWindow: 32768,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.1,
+		outputPrice: 0.1,
+		description: "Mistral's 7B Instruct v0.3 model with 32K context window",
+	},
+	"mistralai/Mixtral-8x7B-Instruct-v0.1": {
+		maxTokens: 8192,
+		contextWindow: 32768,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.3,
+		outputPrice: 0.3,
+		description: "Mistral's Mixtral 8x7B MoE Instruct model with 32K context window",
+	},
+	"deepseek-ai/DeepSeek-R1-Distill-Qwen-1.5B": {
+		maxTokens: 4096,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.05,
+		outputPrice: 0.05,
+		description: "DeepSeek R1 Distill Qwen 1.5B model with 128K context window",
+	},
+	"moonshotai/Kimi-K2-Instruct": {
+		maxTokens: 16384,
+		contextWindow: 16384,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.3,
+		outputPrice: 0.3,
+		description: "Moonshot AI's Kimi K2 Instruct model with tool use support",
+	},
+} as const satisfies Record<string, ModelInfo>

packages/types/src/providers/index.ts

@@ -4,6 +4,7 @@ export * from "./cerebras.js"
 export * from "./chutes.js"
 export * from "./claude-code.js"
 export * from "./deepseek.js"
+export * from "./featherless.js"
 export * from "./gemini.js"
 export * from "./glama.js"
 export * from "./groq.js"

src/api/index.ts

@@ -24,6 +24,7 @@ import {
 	RequestyHandler,
 	HumanRelayHandler,
 	FakeAIHandler,
+	FeatherlessHandler,
 	XAIHandler,
 	GroqHandler,
 	HuggingFaceHandler,
@@ -143,6 +144,8 @@ export function buildApiHandler(configuration: ProviderSettings): ApiHandler {
 			return new IOIntelligenceHandler(options)
 		case "roo":
 			return new RooHandler(options)
+		case "featherless":
+			return new FeatherlessHandler(options)
 		default:
 			apiProvider satisfies "gemini-cli" | undefined
 			return new AnthropicHandler(options)

src/api/providers/featherless.ts

@@ -0,0 +1,19 @@
+import { type FeatherlessModelId, featherlessDefaultModelId, featherlessModels } from "@roo-code/types"
+
+import type { ApiHandlerOptions } from "../../shared/api"
+
+import { BaseOpenAiCompatibleProvider } from "./base-openai-compatible-provider"
+
+export class FeatherlessHandler extends BaseOpenAiCompatibleProvider<FeatherlessModelId> {
+	constructor(options: ApiHandlerOptions) {
+		super({
+			...options,
+			providerName: "Featherless",
+			baseURL: "https://api.featherless.ai/v1",
+			apiKey: options.featherlessApiKey,
+			defaultProviderModelId: featherlessDefaultModelId,
+			providerModels: featherlessModels,
+			defaultTemperature: 0.7,
+		})
+	}
+}

src/api/providers/index.ts

@@ -8,6 +8,7 @@ export { DeepSeekHandler } from "./deepseek"
 export { DoubaoHandler } from "./doubao"
 export { MoonshotHandler } from "./moonshot"
 export { FakeAIHandler } from "./fake-ai"
+export { FeatherlessHandler } from "./featherless"
 export { GeminiHandler } from "./gemini"
 export { GlamaHandler } from "./glama"
 export { GroqHandler } from "./groq"