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🤖 feat: Claude Sonnet 4.6 support (#11829)
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* 🤖 feat: Claude Sonnet 4.6 support

- Updated .env.example to include claude-sonnet-4-6 in the list of available models.
- Enhanced token value assignments in api/models/tx.js and packages/api/src/utils/tokens.ts to accommodate claude-sonnet-4-6.
- Added tests in packages/data-provider/specs/bedrock.spec.ts to verify support for claude-sonnet-4-6 in adaptive thinking and context-1m functionalities.
- Modified bedrock.ts to correctly parse and identify the version of claude-sonnet-4-6 for adaptive thinking checks.
- Included claude-sonnet-4-6 in sharedAnthropicModels and bedrockModels for consistent model availability.

* chore: additional Claude Sonnet 4.6 tests

- Added unit tests for Claude Sonnet 4.6 in `tokens.spec.js` to verify context length and max output tokens.
- Updated `helpers.ts` documentation to reflect adaptive thinking support for Sonnet 4.6.
- Enhanced `llm.spec.ts` with tests for context headers and adaptive thinking configurations for Claude Sonnet 4.6.
- Improved `bedrock.spec.ts` to ensure correct parsing and handling of Claude Sonnet 4.6 model variations with adaptive thinking.
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Danny Avila 2026-02-17 15:24:03 -05:00 • committed by GitHub
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50
api/utils/tokens.spec.js
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@ -1162,6 +1162,56 @@ describe('Claude Model Tests', () => {
expect(matchModelName(model, EModelEndpoint.anthropic)).toBe('claude-opus-4-6');
});
});
it('should return correct context length for Claude Sonnet 4.6 (1M)', () => {
expect(getModelMaxTokens('claude-sonnet-4-6', EModelEndpoint.anthropic)).toBe(
maxTokensMap[EModelEndpoint.anthropic]['claude-sonnet-4-6'],
);
expect(getModelMaxTokens('claude-sonnet-4-6')).toBe(
maxTokensMap[EModelEndpoint.anthropic]['claude-sonnet-4-6'],
);
});
it('should return correct max output tokens for Claude Sonnet 4.6 (64K)', () => {
const { getModelMaxOutputTokens } = require('@librechat/api');
expect(getModelMaxOutputTokens('claude-sonnet-4-6', EModelEndpoint.anthropic)).toBe(
maxOutputTokensMap[EModelEndpoint.anthropic]['claude-sonnet-4-6'],
);
});
it('should handle Claude Sonnet 4.6 model name variations', () => {
const modelVariations = [
'claude-sonnet-4-6',
'claude-sonnet-4-6-20260101',
'claude-sonnet-4-6-latest',
'anthropic/claude-sonnet-4-6',
'claude-sonnet-4-6/anthropic',
'claude-sonnet-4-6-preview',
];
modelVariations.forEach((model) => {
const modelKey = findMatchingPattern(model, maxTokensMap[EModelEndpoint.anthropic]);
expect(modelKey).toBe('claude-sonnet-4-6');
expect(getModelMaxTokens(model, EModelEndpoint.anthropic)).toBe(
maxTokensMap[EModelEndpoint.anthropic]['claude-sonnet-4-6'],
);
});
});
it('should match model names correctly for Claude Sonnet 4.6', () => {
const modelVariations = [
'claude-sonnet-4-6',
'claude-sonnet-4-6-20260101',
'claude-sonnet-4-6-latest',
'anthropic/claude-sonnet-4-6',
'claude-sonnet-4-6/anthropic',
'claude-sonnet-4-6-preview',
];
modelVariations.forEach((model) => {
expect(matchModelName(model, EModelEndpoint.anthropic)).toBe('claude-sonnet-4-6');
});
});
});
describe('Moonshot/Kimi Model Tests', () => {