add opus 4.8 and script to append models to the top

[Light2Dark]

📝 Summary

Used to append at the bottom of each provider, now push to the top

📋 Pre-Review Checklist

• For large changes, or changes that affect the public API: this change was discussed or approved through an issue, on Discord, or the community discussions (Please provide a link if applicable).
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✅ Merge Checklist

• I have read the contributor guidelines.
• Documentation has been updated where applicable, including docstrings for API changes.
• Tests have been added for the changes made.

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Project	Deployment	Actions	Updated (UTC)
marimo-docs	Ready	Preview, Comment	May 29, 2026 10:43am

[Copilot]

Pull request overview

This PR updates the LLM model sync workflow so newly discovered models are inserted at the top of existing provider sections, and adds the latest synced model entries to the catalog.

Changes:

• Renames the existing document merge helper from append-oriented wording to insert-oriented wording.
• Prepends newly synced models before curated provider entries while preserving blank-line formatting.
• Adds new Anthropic, Bedrock, and opencode-go model entries and updates the sync test expectation.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
packages/llm-info/src/sync-models.ts	Changes existing-section insertion to prepend new model entries.
packages/llm-info/src/__tests__/sync-models.test.ts	Updates the sync test to assert prepended ordering.
packages/llm-info/data/models.yml	Adds new model catalog entries near the top of their provider sections.

[cubic-dev-ai]

2 issues found across 3 files

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="packages/llm-info/data/models.yml">

<violation number="1" location="packages/llm-info/data/models.yml:214">
P2: Missing non-global variant for Claude Opus 4.8 in bedrock. Opus 4.7 has both `anthropic.claude-opus-4-7` and `global.anthropic.claude-opus-4-7`. Only the global variant was added for Opus 4.8. If the non-global variant is also available, add it.</violation>
</file>

Architecture diagram

sequenceDiagram
    participant Dev as Developer
    participant Script as syncModels CLI
    participant API as Models Dev API
    participant Parser as YAML Parser
    participant File as models.yml

    Note over Dev,File: NEW model registration flow

    Dev->>Script: run syncModels()
    Script->>API: fetch latest models
    API-->>Script: model definitions list
    Script->>Script: filter & cap new entries per provider

    alt has existing YAML file
        Script->>Parser: parse existing models.yml
        Parser-->>Script: YAML document tree
        Script->>Script: insertIntoDocument()
        Note over Script: prepend new models to each <br/>provider section (not append)
        Script->>Script: build YAML map nodes
        Script->>Script: preserve blank line between <br/>new block and curated entries
        Script->>File: write updated YAML
    else fresh file
        Script->>Script: renderFresh()
        Script->>File: write complete YAML
    end

    File-->>Dev: updated models.yml with new models at top

    Note over Dev,File: Example: anthropic gets Claude Opus 4.8 <br/>prepended above existing Opus 4.7

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<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[cubic-dev-ai]

P2: Missing non-global variant for Claude Opus 4.8 in bedrock. Opus 4.7 has both anthropic.claude-opus-4-7 and global.anthropic.claude-opus-4-7. Only the global variant was added for Opus 4.8. If the non-global variant is also available, add it.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At packages/llm-info/data/models.yml, line 214:

<comment>Missing non-global variant for Claude Opus 4.8 in bedrock. Opus 4.7 has both `anthropic.claude-opus-4-7` and `global.anthropic.claude-opus-4-7`. Only the global variant was added for Opus 4.8. If the non-global variant is also available, add it.</comment>

<file context>
@@ -199,6 +210,17 @@ google:
 
 bedrock:
+
+  - name: Claude Opus 4.8 (Global)
+    model: global.anthropic.claude-opus-4-8
+    description: "Modest but tangible improvement over Claude Opus 4.7"
</file context>

[Light2Dark]

didn't add it for now. Could see if users want that too. The global variant is the most available for all regions.

[cubic-dev-ai]

Thanks for the context—understood.