[BOT ISSUE] Anthropic: update claude-sonnet-5 pricing from introductory to standard rates

[github-actions]

Stale metadata

claude-sonnet-5 currently uses introductory/promotional pricing ($2/$10 per MTok) that expires August 31, 2026. The catalog should reflect the standard on-demand pricing ($3/$15 per MTok).

Current vs standard pricing

Field	Current (intro)	Standard	Source
input_cost_per_mil_tokens	2	3	Anthropic Pricing
output_cost_per_mil_tokens	10	15	Anthropic Pricing
input_cache_read_cost_per_mil_tokens	0.2	0.30	Anthropic Pricing
input_cache_write_cost_per_mil_tokens	2.5	3.75	Anthropic Pricing
input_cache_write_5m_cost_per_mil_tokens	2.5	3.75	Anthropic Pricing
input_cache_write_1h_cost_per_mil_tokens	4	6	Anthropic Pricing

Cross-source verification

1. Anthropic pricing page (docs.anthropic.com/en/docs/about-claude/pricing): Explicitly lists both introductory and standard pricing in separate table rows — "Claude Sonnet 5 through August 31, 2026" at $2/$10 and "Claude Sonnet 5 starting September 1, 2026" at $3/$15, with full cache tier pricing for both
2. Anthropic pricing note: "Introductory pricing of $2/$10 per million input/output tokens is in effect through August 31, 2026, after which the standard pricing of $3/$15 per million input/output tokens will take effect."

Notes

• The introductory pricing expires August 31, 2026; standard pricing takes effect September 1, 2026
• Cache pricing multipliers are consistent: 5m write = 1.25x input, 1h write = 2x input, cache read = 0.1x input
• All six pricing fields need updating together

[github-actions]

Autofix skipped because the issue body/title did not contain parseable bot metadata for a model catalog change.