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Merged
sanchitrk merged 3 commits into from
Nov 6, 2026
Merged

chore: stop using retired claude-sonnet-4-5 #138

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7f893e4
chore: stop using retired claude-sonnet-4-5
sanchitrk Nov 4, 2026
43eb0fe
chore(aikit): drop retired Claude Sonnet 4.5 from the Anthropic catalog
sanchitrk Nov 4, 2026
e481f09
Merge branch canary into claude/intelligent-proskuriakova-37265a
sanchitrk Nov 6, 2026
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9 changes: 7 additions & 2 deletions packages/aikit/src/cli/modelgen.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -127,8 +127,13 @@ function toModelValue(providerId: string, provider: ModelsDevProvider, model: Mo
return applyModification(providerId, provider, model);
}

// models.dev lists this alias, but OpenAI's APIs do not accept it (pi).
const MODELS_DEV_UNSUPPORTED_MODEL_IDS = new Set(["openai/gpt-5.6"]);
// models.dev lists these, but the provider's API does not accept them: an OpenAI alias (pi),
// and Claude Sonnet 4.5, retired from the Claude API on 2026-11-30.
const MODELS_DEV_UNSUPPORTED_MODEL_IDS = new Set([
"openai/gpt-5.6",
"anthropic/claude-sonnet-4-5",
"anthropic/claude-sonnet-4-5-20250929",
]);

function usable(providerId: string, provider: ModelsDevProvider, model: ModelsDevModel): boolean {
return (
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68 changes: 0 additions & 68 deletions packages/aikit/src/model/baseline.json
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Expand Up @@ -501,74 +501,6 @@
"xhigh": "xhigh"
}
},
"claude-sonnet-4-5": {
"api": {
"id": "claude-sonnet-4-5",
"method": "languageModel",
"url": "https://api.anthropic.com/v1"
},
"baseUrl": "https://api.anthropic.com/v1",
"contextWindow": 200000,
"cost": {
"cacheRead": 0.3,
"cacheWrite": 3.75,
"input": 3,
"output": 15
},
"id": "claude-sonnet-4-5",
"input": [
"text",
"image"
],
"maxTokens": 64000,
"name": "Claude Sonnet 4.5 (latest)",
"npm": "@ai-sdk/anthropic",
"protocol": "anthropic",
"provider": {
"env": [
"ANTHROPIC_API_KEY"
],
"id": "anthropic",
"name": "Anthropic",
"source": "api"
},
"providerOptionsKey": "anthropic",
"reasoning": true
},
"claude-sonnet-4-5-20250929": {
"api": {
"id": "claude-sonnet-4-5-20250929",
"method": "languageModel",
"url": "https://api.anthropic.com/v1"
},
"baseUrl": "https://api.anthropic.com/v1",
"contextWindow": 200000,
"cost": {
"cacheRead": 0.3,
"cacheWrite": 3.75,
"input": 3,
"output": 15
},
"id": "claude-sonnet-4-5-20250929",
"input": [
"text",
"image"
],
"maxTokens": 64000,
"name": "Claude Sonnet 4.5",
"npm": "@ai-sdk/anthropic",
"protocol": "anthropic",
"provider": {
"env": [
"ANTHROPIC_API_KEY"
],
"id": "anthropic",
"name": "Anthropic",
"source": "api"
},
"providerOptionsKey": "anthropic",
"reasoning": true
},
"claude-sonnet-4-6": {
"api": {
"id": "claude-sonnet-4-6",
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68 changes: 0 additions & 68 deletions packages/aikit/test/__artifacts__/modelgen.json
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Original file line number Diff line number Diff line change
Expand Up @@ -501,74 +501,6 @@
"xhigh": "xhigh"
}
},
"claude-sonnet-4-5": {
"api": {
"id": "claude-sonnet-4-5",
"method": "languageModel",
"url": "https://api.anthropic.com/v1"
},
"baseUrl": "https://api.anthropic.com/v1",
"contextWindow": 200000,
"cost": {
"cacheRead": 0.3,
"cacheWrite": 3.75,
"input": 3,
"output": 15
},
"id": "claude-sonnet-4-5",
"input": [
"text",
"image"
],
"maxTokens": 64000,
"name": "Claude Sonnet 4.5 (latest)",
"npm": "@ai-sdk/anthropic",
"protocol": "anthropic",
"provider": {
"env": [
"ANTHROPIC_API_KEY"
],
"id": "anthropic",
"name": "Anthropic",
"source": "api"
},
"providerOptionsKey": "anthropic",
"reasoning": true
},
"claude-sonnet-4-5-20250929": {
"api": {
"id": "claude-sonnet-4-5-20250929",
"method": "languageModel",
"url": "https://api.anthropic.com/v1"
},
"baseUrl": "https://api.anthropic.com/v1",
"contextWindow": 200000,
"cost": {
"cacheRead": 0.3,
"cacheWrite": 3.75,
"input": 3,
"output": 15
},
"id": "claude-sonnet-4-5-20250929",
"input": [
"text",
"image"
],
"maxTokens": 64000,
"name": "Claude Sonnet 4.5",
"npm": "@ai-sdk/anthropic",
"protocol": "anthropic",
"provider": {
"env": [
"ANTHROPIC_API_KEY"
],
"id": "anthropic",
"name": "Anthropic",
"source": "api"
},
"providerOptionsKey": "anthropic",
"reasoning": true
},
"claude-sonnet-4-6": {
"api": {
"id": "claude-sonnet-4-6",
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4 changes: 2 additions & 2 deletions packages/aikit/test/thinking.wire.test.ts
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Expand Up @@ -96,7 +96,7 @@ describe("thinking wire budgets", () => {

it("lets the Anthropic adapter add the budget exactly once", async () => {
const model = makeModel({
id: "claude-sonnet-4-5",
id: "claude-haiku-4-5",
npm: "@ai-sdk/anthropic",
reasoning: true,
maxTokens: 64_000,
Expand Down Expand Up @@ -128,7 +128,7 @@ const adaptiveClaude = makeModel({
compat: { forceAdaptiveThinking: true },
});
const budgetClaude = makeModel({
id: "claude-sonnet-4-5",
id: "claude-haiku-4-5",
npm: "@ai-sdk/anthropic",
reasoning: true,
maxTokens: 64_000,
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6 changes: 3 additions & 3 deletions packages/codework/test/__artifacts__/acp.config-persist.json
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Expand Up @@ -4,20 +4,20 @@
"thinking": "low"
},
"chosen": {
"model": "openrouter/anthropic/claude-sonnet-4.5",
"model": "openrouter/anthropic/claude-sonnet-5.5",
"thinking": "high"
},
"afterRestart": {
"chosen": {
"model": "openrouter/anthropic/claude-sonnet-4.5",
"model": "openrouter/anthropic/claude-sonnet-5.5",
"thinking": "high"
},
"untouched": {
"model": "openrouter/anthropic/claude-haiku-4.5",
"thinking": "low"
},
"rethought": {
"model": "openrouter/anthropic/claude-sonnet-4.5",
"model": "openrouter/anthropic/claude-sonnet-5.5",
"thinking": "medium"
}
}
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2 changes: 1 addition & 1 deletion packages/codework/test/acp.test.ts
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Expand Up @@ -438,7 +438,7 @@ describe("codework acp", () => {
yield* acp.agent.setSessionConfigOption({
sessionId: chosen.sessionId,
configId: "model",
value: "openrouter/anthropic/claude-sonnet-4.5",
value: "openrouter/anthropic/claude-sonnet-5.5",
});
const set = yield* acp.agent.setSessionConfigOption({
sessionId: chosen.sessionId,
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2 changes: 1 addition & 1 deletion packages/codework/test/cli.test.ts
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Expand Up @@ -393,7 +393,7 @@ describe("codework CLI", () => {

expect(result.status).toBe(0);
expect(result.stdout).toContain("openai/gpt-4o\n");
expect(result.stdout).toContain("anthropic/claude-sonnet-4-5\n");
expect(result.stdout).toContain("anthropic/claude-sonnet-5-5\n");
});

it("filters models by provider with models --provider", () => {
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2 changes: 1 addition & 1 deletion packages/harness/test/__artifacts__/thread.walkthrough.json
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Expand Up @@ -78,7 +78,7 @@
"kind": "agent",
"revisions": [
"23 {\"model\":{\"provider\":\"openai\",\"id\":\"gpt-5.4\"},\"modelTools\":{\"add\":[\"web_fetch\"]}}",
"31 {\"model\":{\"provider\":\"anthropic\",\"id\":\"claude-sonnet-4-5\"},\"modelTools\":{\"add\":[\"web_fetch\"]}}"
"31 {\"model\":{\"provider\":\"anthropic\",\"id\":\"claude-sonnet-5-5\"},\"modelTools\":{\"add\":[\"web_fetch\"]}}"
]
},
{
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2 changes: 1 addition & 1 deletion packages/harness/test/thread.test.ts
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Expand Up @@ -331,7 +331,7 @@ describe("threads", () => {

script.set(t2, [{ _tag: "reply", text: "oauth it is" }]);
yield* run(sessionId, t2, "Use OAuth instead");
yield* configure(sessionId, t2, { model: { provider: "anthropic", id: "claude-sonnet-4-5" } });
yield* configure(sessionId, t2, { model: { provider: "anthropic", id: "claude-sonnet-5-5" } });
expect((yield* documents.agent(t2)).model?.provider).toBe("anthropic");
expect((yield* documents.agent(main)).model?.provider).toBe("openai");

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