{"slug": "claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you", "title": "Claude API 2026-10-21: Temperature Is Gone, and Even the Default Breaks You", "summary": "Anthropic released Claude API version 2026-10-21, its first new API version in 3 years, which removes the temperature parameter entirely, according to byteiota. Even requests using default values now return 400 errors, and the report details every breaking change and how to migrate safely.", "body_md": "Anthropic's first new API version in 3 years removes temperature entirely. Even default values return 400s. Here's every breaking change and how to migrate safely.\n\nThe post \nClaude API 2026-10-21: Temperature Is Gone, and Even the Default Breaks You\n appeared first on \nbyteiota\n.", "url": "https://wpnews.pro/news/claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you", "canonical_source": "https://byteiota.com/claude-api-2026-10-21-breaking-changes/", "published_at": "2026-10-22 06:17:24+00:00", "updated_at": "2026-10-22 07:11:08.584342+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-tools", "developer-tools"], "entities": ["Anthropic", "Claude API", "byteiota"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you", "markdown": "https://wpnews.pro/news/claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you.md", "text": "https://wpnews.pro/news/claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you.txt", "jsonld": "https://wpnews.pro/news/claude-api-2026-10-21-temperature-is-gone-and-even-the-default-breaks-you.jsonld"}}