fix(models): update anthropic models

[steebchen]

Summary by CodeRabbit

• New Features

  • Added Claude Sonnet 4.5 and Claude Haiku 4.5 model support across multiple providers.

• Updates

  • Increased maximum output capacity for Claude models to 64,000 tokens.
  • Enhanced model configuration consistency and provider coverage.

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[coderabbitai]

Walkthrough

Updates anthropic.ts model configurations by adding new Claude Sonnet 4.5 (2025-09-29) and Haiku 4.5 (2025-10-01) model entries with multi-provider support, normalizing maxOutput to 64000 across Claude family variants, and expanding provider coverage including Routeway-Discount and AWS Bedrock.

Changes

Cohort / File(s)	Summary
Claude Model Configuration Updates packages/models/src/models/anthropic.ts	Added new Claude Sonnet 4.5 (2025-09-29) and v1:0 variant entries with multi-provider configurations (Anthropic, Routeway-Discount, AWS Bedrock). Added Claude Haiku 4.5 (2025-10-01) entries. Standardized maxOutput values to 64000 across Sonnet, Haiku, and related Claude variants. Updated pricing, reasoning, streaming, vision, tools, and discount fields across model entries.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10–15 minutes

• Multiple model entries updated across Sonnet, Haiku, and Opus variants with consistent patterns
• Single-file change with primarily data/configuration updates
• Multi-provider configurations added with repetitive structure
• No complex logic changes or control flow modifications

Possibly related PRs

• feat(models): add new claude-sonnet-4-5 with discount #980: Adds Routeway-Discount provider entry for Claude Sonnet 4.5 (2025-09-29) and v1:0 variant in the same file
• feat(anthropic): add Claude Haiku 4.5 model #1023: Modifies Claude Haiku 4.5 model variants with field additions and updates in anthropic.ts
• feat(models): support opus-4.5 #1236: Updates Claude 4.5 family model entries with multi-provider configurations in the same file

Suggested reviewers

• smakosh

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix(models): update anthropic models' accurately describes the main change: updates to Anthropic model configurations including maxOutput values, new Claude variants, and provider information.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch steebchen-patch-1

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📥 Commits

Reviewing files that changed from the base of the PR and between ebf791e and b5bd67d.

📒 Files selected for processing (1)

• packages/models/src/models/anthropic.ts (3 hunks)

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• packages/models/src/models/anthropic.ts

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Files:

• packages/models/src/models/anthropic.ts

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Files:

• packages/models/src/models/anthropic.ts

**/*.{js,ts,tsx,jsx}

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Always use top-level import, never use require or dynamic imports

Files:

• packages/models/src/models/anthropic.ts

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🔇 Additional comments (3)

packages/models/src/models/anthropic.ts (3)

304-359: New dated model entry looks good.

The new claude-sonnet-4-5-20250929 model entry is well-structured and follows the established pattern for dated model versions. All required fields are present and the provider configurations are consistent with the parent claude-sonnet-4-5 model.

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378-383: LGTM - Normalizing model configuration.

The addition of maxOutput: 64000 and explicit capability flags (streaming, vision, tools) properly normalizes the model configuration, making the capabilities clear and consistent with other Claude 4.5 models.

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266-301: Verify maxOutput discrepancy between providers for Claude Sonnet 4.5 models.

The maxOutput is set to 64000 for both anthropic and routeway-discount providers, but only 8192 for the aws-bedrock provider. This pattern appears consistently for both claude-sonnet-4-5 variants (lines 295 and 352).

Verify whether AWS Bedrock genuinely enforces this lower output limit for these models, or if this is an unintended discrepancy that could cause unexpected truncation.

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[Copilot]

Pull request overview

This PR adds two new Anthropic Claude models (Sonnet 4.5 dated 2025-09-29 and Haiku 4.5 dated 2025-10-01) and updates the maximum output capacity for the existing Claude Haiku 4.5 model from 8,192 to 64,000 tokens.

• Adds Claude Sonnet 4.5 (2025-09-29) with reasoning capabilities across three providers
• Adds Claude Haiku 4.5 (2025-10-01) for fast, efficient processing
• Increases maxOutput limit for Claude Haiku 4.5 to support longer responses

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[Copilot]

The model ID and name indicate a release date of 2025-10-01, but the releasedAt and publishedAt fields are set to 2025-09-29. These dates should be consistent. Either update the dates to "2025-10-01" or use a different model ID/name that matches the September 29 release date.

Suggested change

	releasedAt: new Date("2025-09-29"),
	publishedAt: new Date("2025-09-29"),
	releasedAt: new Date("2025-10-01"),
	publishedAt: new Date("2025-10-01"),