Pankaj Kumar(@pankajkumar_dev):Claude Sonnet 5 Is Here: Opus-Level Performance - Sonnet 5 delivers near Opus 4.8-level performance at Sonnet pricing. - Introductory pricing is $2/$10 per million tokens until Aug. 31. Standard pricing: $3/M input, $15/M output. - Hidden change: Sonnet 5 uses the Opus 4.7 tokenizer, so the same prompt may use up to ~35% more tokens, increasing effective costs. - Reasoning, coding, tool use, and agentic capabilities have all seen major improvements. It's now the default model for Free and Pro users, and is available in Claude, Claude Code, and the API.

2026.06.30 18:29

Claude Sonnet 5 Is Here: Opus-Level Performance - Sonnet 5 delivers near Opus 4.8-level performance at Sonnet pricing. - Introductory pricing is $2/$10 per million tokens until Aug. 31. Standard pricing: $3/M input, $15/M output. - Hidden change: Sonnet 5 uses the Opus 4.7 tokenizer, so the same prompt may use up to ~35% more tokens, increasing effective costs. - Reasoning, coding, tool use, and agentic capabilities have all seen major improvements. It's now the default model for Free and Pro users, and is available in Claude, Claude Code, and the API.

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