[BOT ISSUE] Missing models: claude-sonnet-4-0 and claude-opus-4-0 aliases

[github-actions]

Summary

Two Claude API alias model IDs are missing from model_list.json:

• claude-sonnet-4-0 — alias for claude-sonnet-4-20250514
• claude-opus-4-0 — alias for claude-opus-4-20250514

These are confirmed as valid "Claude API alias" entries on the official Anthropic models page.

Missing entries

claude-sonnet-4-0

"claude-sonnet-4-0": {
  "format": "anthropic",
  "flavor": "chat",
  "multimodal": true,
  "input_cost_per_mil_tokens": 3,
  "output_cost_per_mil_tokens": 15,
  "input_cache_read_cost_per_mil_tokens": 0.3,
  "input_cache_write_cost_per_mil_tokens": 3.75,
  "displayName": "Claude Sonnet 4.0",
  "reasoning": true,
  "reasoning_budget": true,
  "deprecated": true,
  "deprecation_date": "2026-06-15",
  "parent": "claude-sonnet-4-20250514",
  "max_input_tokens": 200000,
  "max_output_tokens": 64000,
  "available_providers": ["anthropic"]
}

claude-opus-4-0

"claude-opus-4-0": {
  "format": "anthropic",
  "flavor": "chat",
  "multimodal": true,
  "input_cost_per_mil_tokens": 15,
  "output_cost_per_mil_tokens": 75,
  "input_cache_read_cost_per_mil_tokens": 1.5,
  "input_cache_write_cost_per_mil_tokens": 18.75,
  "displayName": "Claude Opus 4.0",
  "reasoning": true,
  "deprecated": true,
  "deprecation_date": "2026-06-15",
  "parent": "claude-opus-4-20250514",
  "max_input_tokens": 200000,
  "max_output_tokens": 32000,
  "available_providers": ["anthropic"]
}

Verification

• Source 1: Anthropic models page (https://docs.anthropic.com/en/docs/about-claude/models) — legacy models table lists claude-sonnet-4-0 as "Claude API alias" for Claude Sonnet 4 (deprecated), and claude-opus-4-0 as "Claude API alias" for Claude Opus 4 (deprecated)
• Source 2: Same page confirms both are deprecated with retirement date June 15, 2026
• ID format: claude-{model}-4-0 follows the Anthropic alias naming convention (similar to how claude-sonnet-4-5 is an alias for claude-sonnet-4-5-20250929)
• Recent commits: No entries for these model IDs exist in model_list.json

[github-actions]

Closing this bot issue because claude-sonnet-4-0, claude-opus-4-0 are already deprecated, retired, or scheduled to deprecate within 90 days, so they are not actionable additions to the active model catalog.

Verification sources: https://platform.claude.com/docs/en/docs/about-claude/models, https://platform.claude.com/docs/en/about-claude/pricing, https://raw.githubusercontent.com/BerriAI/litellm/refs/heads/main/litellm/model_prices_and_context_window_backup.json