feat: add Avian as a new API provider

packages/types/src/provider-settings.ts

@@ -4,6 +4,7 @@ import { modelInfoSchema, reasoningEffortSettingSchema, verbosityLevelsSchema, s
 import { codebaseIndexProviderSchema } from "./codebase-index.js"
 import {
 	anthropicModels,
+	avianModels,
 	basetenModels,
 	bedrockModels,
 	deepSeekModels,
@@ -103,6 +104,7 @@ export const providerNames = [
 	...customProviders,
 	...fauxProviders,
 	"anthropic",
+	"avian",
 	"bedrock",
 	"baseten",
 	"deepseek",
@@ -359,6 +361,10 @@ const zaiSchema = apiModelIdProviderModelSchema.extend({
 	zaiApiLine: zaiApiLineSchema.optional(),
 })
 
+const avianSchema = apiModelIdProviderModelSchema.extend({
+	avianApiKey: z.string().optional(),
+})
+
 const fireworksSchema = apiModelIdProviderModelSchema.extend({
 	fireworksApiKey: z.string().optional(),
 })
@@ -387,6 +393,7 @@ const defaultSchema = z.object({
 
 export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProvider", [
 	anthropicSchema.merge(z.object({ apiProvider: z.literal("anthropic") })),
+	avianSchema.merge(z.object({ apiProvider: z.literal("avian") })),
 	openRouterSchema.merge(z.object({ apiProvider: z.literal("openrouter") })),
 	bedrockSchema.merge(z.object({ apiProvider: z.literal("bedrock") })),
 	vertexSchema.merge(z.object({ apiProvider: z.literal("vertex") })),
@@ -420,6 +427,7 @@ export const providerSettingsSchemaDiscriminated = z.discriminatedUnion("apiProv
 export const providerSettingsSchema = z.object({
 	apiProvider: providerNamesWithRetiredSchema.optional(),
 	...anthropicSchema.shape,
+	...avianSchema.shape,
 	...openRouterSchema.shape,
 	...bedrockSchema.shape,
 	...vertexSchema.shape,
@@ -497,6 +505,7 @@ export const isTypicalProvider = (key: unknown): key is TypicalProvider =>
 
 export const modelIdKeysByProvider: Record<TypicalProvider, ModelIdKey> = {
 	anthropic: "apiModelId",
+	avian: "apiModelId",
 	openrouter: "openRouterModelId",
 	bedrock: "apiModelId",
 	vertex: "apiModelId",
@@ -565,6 +574,11 @@ export const MODELS_BY_PROVIDER: Record<
 		label: "Anthropic",
 		models: Object.keys(anthropicModels),
 	},
+	avian: {
+		id: "avian",
+		label: "Avian",
+		models: Object.keys(avianModels),
+	},
 	bedrock: {
 		id: "bedrock",
 		label: "Amazon Bedrock",

packages/types/src/providers/avian.ts

@@ -0,0 +1,49 @@
+import type { ModelInfo } from "../model.js"
+
+// https://avian.io
+export type AvianModelId = "deepseek/deepseek-v3.2" | "moonshotai/kimi-k2.5" | "z-ai/glm-5" | "minimax/minimax-m2.5"
+
+export const avianDefaultModelId: AvianModelId = "deepseek/deepseek-v3.2"
+
+export const avianModels = {
+	"deepseek/deepseek-v3.2": {
+		maxTokens: 65536,
+		contextWindow: 163840,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.26,
+		outputPrice: 0.38,
+		description:
+			"DeepSeek V3.2 is the latest iteration of the V3 model family with enhanced reasoning capabilities, improved code generation, and better instruction following. 164K context window with 65K max output.",
+	},
+	"moonshotai/kimi-k2.5": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.45,
+		outputPrice: 2.2,
+		description:
+			"Kimi K2.5 is Moonshot AI's flagship agentic model. It unifies vision and text, thinking and non-thinking modes, and single-agent and multi-agent execution into one model. 131K context window.",
+	},
+	"z-ai/glm-5": {
+		maxTokens: 16384,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.3,
+		outputPrice: 2.55,
+		description:
+			"Z.ai GLM-5 is an advanced coding and reasoning model with exceptional performance on complex programming tasks. 131K context window with 16K max output.",
+	},
+	"minimax/minimax-m2.5": {
+		maxTokens: 1048576,
+		contextWindow: 1048576,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.3,
+		outputPrice: 1.1,
+		description:
+			"MiniMax M2.5 is a high-performance language model with an industry-leading 1M context window, optimized for long-context understanding and generation tasks.",
+	},
+} as const satisfies Record<string, ModelInfo>

packages/types/src/providers/index.ts

@@ -1,4 +1,5 @@
 export * from "./anthropic.js"
+export * from "./avian.js"
 export * from "./baseten.js"
 export * from "./bedrock.js"
 export * from "./deepseek.js"
@@ -26,6 +27,7 @@ export * from "./zai.js"
 export * from "./minimax.js"
 
 import { anthropicDefaultModelId } from "./anthropic.js"
+import { avianDefaultModelId } from "./avian.js"
 import { basetenDefaultModelId } from "./baseten.js"
 import { bedrockDefaultModelId } from "./bedrock.js"
 import { deepSeekDefaultModelId } from "./deepseek.js"
@@ -101,6 +103,8 @@ export function getProviderDefaultModelId(
 			return vscodeLlmDefaultModelId
 		case "sambanova":
 			return sambaNovaDefaultModelId
+		case "avian":
+			return avianDefaultModelId
 		case "fireworks":
 			return fireworksDefaultModelId
 		case "roo":

src/api/index.ts

@@ -7,6 +7,7 @@ import { ApiStream } from "./transform/stream"
 
 import {
 	AnthropicHandler,
+	AvianHandler,
 	AwsBedrockHandler,
 	OpenRouterHandler,
 	VertexHandler,
@@ -120,6 +121,8 @@ export function buildApiHandler(configuration: ProviderSettings): ApiHandler {
 	switch (apiProvider) {
 		case "anthropic":
 			return new AnthropicHandler(options)
+		case "avian":
+			return new AvianHandler(options)
 		case "openrouter":
 			return new OpenRouterHandler(options)
 		case "bedrock":