fix: update Anthropic model metadata for claude-sonnet-4-20250514 and claude-4-sonnet-20250514

[github-actions]

fix: update Anthropic model metadata for claude-sonnet-4-20250514 and claude-4-sonnet-20250514

Closes #685

Source issue: #685

Summary

Field	Value
Provider	anthropic
Primary model	claude-sonnet-4-20250514
Changed models	claude-sonnet-4-20250514 claude-4-sonnet-20250514
Added models	None
Updated models	claude-sonnet-4-20250514 claude-4-sonnet-20250514
Verification sources	1

Verified metadata

Model	Display name	Parent	Providers	Format	Flavor	Token limits	Pricing	Lifecycle
claude-sonnet-4-20250514	Claude 4 Sonnet		anthropic	anthropic	chat	input=200000, output=64000	in/out=3/15 per 1M; cache read=0.3 per 1M; cache write=3.75 per 1M	date=2026-05-14; multimodal=true; reasoning=true
claude-4-sonnet-20250514	Claude 4 Sonnet (old naming format)		anthropic	anthropic	chat	input=200000, output=64000	in/out=3/15 per 1M; cache read=0.3 per 1M; cache write=3.75 per 1M	deprecated=true; multimodal=true

Verification notes

Verification

Official sources consulted

• Source 1: Anthropic models page — the legacy models table shows Claude Sonnet 4 (deprecated) with a 200K token context window (tooltip: "~150k words \ ~680k unicode characters"). This is the same tooltip text used for Claude Sonnet 4.5, Claude Opus 4.5, Claude Opus 4.1, and Claude Opus 4, all of which are listed as 200K. Only Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 have 1M context windows.

Fields verified from official sources

Field	Proposed Value	Source
max_input_tokens	200000	Anthropic models page — legacy models table, context window column

sync_models (LiteLLM) cross-check

Field	Proposed Value	sync_models Value	sync_models Key	Justification
max_input_tokens	200000	1000000	anthropic.claude-sonnet-4-20250514-v1:0 (bedrock_converse provider)	The official Anthropic documentation at https://platform.claude.com/docs/en/docs/about-claude/models explicitly lists Claude Sonnet 4 with a 200K context window. sync_models appears to have incorrectly propagated the 1M context window from newer models (Opus 4.6+, Sonnet 4.6) to this older model. The primary provider documentation is authoritative.

Fields not changed

All other fields (format, flavor, multimodal, pricing, max_output_tokens, reasoning, reasoning_budget, deprecation_date, available_providers, displayName) remain unchanged — they are correct in the current catalog entry.

Additional context

This model is deprecated (retirement date: June 15, 2026 per Anthropic deprecation notice), but the context window should still be correct while it remains in the catalog.

sync_models vs proposed update

sync_models cross-check found differences. Official provider verification was used for the applied values, and sync_models discrepancies are listed below for review.

Model	Field	Proposed update	sync_models	sync_models source models
claude-sonnet-4-20250514	max_input_tokens	200000	1000000	claude-sonnet-4-20250514
claude-4-sonnet-20250514	max_input_tokens	200000	1000000	claude-4-sonnet-20250514

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