add opus 4.8 and script to append models to the top

packages/llm-info/README.md

@@ -15,7 +15,7 @@ If you want to add a new LLM model or provider, you can do so by editing the YAM
 
 ## Syncing from `models.dev`
 
-`pnpm sync-models` appends latest models from [`models.dev`](https://models.dev/api.json) to `models.yml`. Existing entries are preserved. Run `pnpm codegen` afterwards.
+`pnpm sync-models` adds the latest models from [`models.dev`](https://models.dev/api.json) to the top of each provider section in `models.yml`. Existing entries are preserved. Run `pnpm codegen` afterwards.
 
 ```bash
 pnpm sync-models                          # all providers, 10 newest each

packages/llm-info/data/models.yml

@@ -1,4 +1,15 @@
 anthropic:
+
+  - name: Claude Opus 4.8
+    model: claude-opus-4-8
+    description: "Modest but tangible improvement over Claude Opus 4.7"
+    roles: [chat, edit]
+    capabilities: [thinking, tool_calling]
+    input_types: [text, image, pdf]
+    output_types: [text]
+    release_date: 2026-05-28
+    cost: {input: 5, output: 25}
+
   - name: Claude Opus 4.7
     model: claude-opus-4-7
     description: "Next generation of Anthropic's Opus family, built for long-running, asynchronous agents"
@@ -199,6 +210,17 @@ google:
     cost: {input: 2, output: 12}
 
 bedrock:
+
+  - name: Claude Opus 4.8 (Global)
+    model: global.anthropic.claude-opus-4-8
+    description: "Modest but tangible improvement over Claude Opus 4.7"
+    roles: [chat, edit]
+    capabilities: [thinking, tool_calling]
+    input_types: [text, image, pdf]
+    output_types: [text]
+    release_date: 2026-05-28
+    cost: {input: 5, output: 25}
+
   - name: Claude Opus 4.7
     model: anthropic.claude-opus-4-7
     description: "Next generation of Anthropic's Opus family, built for long-running, asynchronous agents"
@@ -654,6 +676,17 @@ wandb:
     cost: {input: 0.1, output: 0.1}
 
 opencode-go:
+
+  - name: Qwen3.7 Max
+    model: qwen3.7-max
+    description: "Capable of writing and debugging code, and sustaining autonomous execution across hundreds or thousands of steps"
+    roles: [chat, edit]
+    capabilities: [thinking, tool_calling]
+    input_types: [text]
+    output_types: [text]
+    release_date: 2026-05-21
+    cost: {input: 2.5, output: 7.5}
+
   - name: DeepSeek V4 Flash
     model: deepseek-v4-flash
     description: "Efficiency-optimized Mixture-of-Experts model from DeepSeek with 284B total parameters and 13B activated parameters, supporting a 1M-token context window"

packages/llm-info/src/__tests__/sync-models.test.ts

@@ -635,7 +635,7 @@ describe("syncModels", () => {
     writeFileSync(yamlPath, FIXTURE_YAML);
   });
 
-  it("appends new entries to existing provider sections and creates new ones", async () => {
+  it("prepends new entries to existing provider sections and creates new ones", async () => {
     const result = await syncModels({
       modelsYamlPath: yamlPath,
       modelsDev: FIXTURE_API,
@@ -664,6 +664,10 @@ describe("syncModels", () => {
     );
     expect(opus45.description).toBe("A hand-written description.");
     expect(opus45.name).toBe("Claude Opus 4.5");
+    expect(parsed.anthropic.map((m: { model: string }) => m.model)).toEqual([
+      "claude-opus-4-7",
+      "claude-opus-4-5",
+    ]);
   });
 
   it("renders flow-style arrays and a blank line between entries", async () => {

packages/llm-info/src/sync-models.ts

@@ -39,7 +39,7 @@ interface SyncOptions {
   modelsDev?: ModelsDevApi;
   write?: boolean;
   mode?: SyncMode;
-  /** Cap on new entries appended per provider section. */
+  /** Cap on new entries inserted per provider section. */
   maxPerProvider?: number;
   /** Restrict sync to these marimo provider ids (defaults to all). */
   providers?: readonly string[];
@@ -170,10 +170,10 @@ function renderFresh(entries: ModelsByProvider): string {
 }
 
 /**
- * Append new entries into an existing document, creating provider sections if
+ * Insert new entries into an existing document, creating provider sections if
  * needed. Preserves comments and ordering of unchanged sections.
  */
-function appendIntoDocument(
+function insertIntoDocument(
   yamlText: string,
   newEntries: ModelsByProvider,
 ): string {
@@ -199,13 +199,20 @@ function appendIntoDocument(
       // New section appended after existing content — always blank-line separated.
       addProviderSection(doc, root, provider, seq, true);
     }
-    for (const model of models) {
+    const originalFirstItem = seq.items[0] as { spaceBefore?: boolean };
+    const newItems: YAMLMap[] = [];
+    for (const [index, model] of models.entries()) {
       const item = buildEntryNode(doc, model);
-      if (seq.items.length > 0) {
+      if (index > 0 || originalFirstItem?.spaceBefore) {
         (item as { spaceBefore?: boolean }).spaceBefore = true;
       }
-      seq.items.push(item);
+      newItems.push(item);
+    }
+    if (newItems.length > 0 && seq.items.length > 0) {
+      // Preserve a blank line between the prepended block and curated entries.
+      originalFirstItem.spaceBefore = true;
     }
+    seq.items.unshift(...newItems);
   }
 
   return doc.toString({ lineWidth: 0, flowCollectionPadding: false });
@@ -253,7 +260,7 @@ export async function syncModels(options: SyncOptions): Promise<SyncResult> {
   const yaml = isFresh
     ? renderFresh(summary.newEntries)
     : addedCount > 0
-      ? appendIntoDocument(existingText, summary.newEntries)
+      ? insertIntoDocument(existingText, summary.newEntries)
       : existingText;
 
   if (write && (addedCount > 0 || mode === "replace")) {