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Providers

Learn how to deploy + call models from different providers on LiteLLM

📄️ Preserved Thinking Prefix Stability

Claude models that preserve thinking across turns sign each thinking block and bind it to the request that produced it. When you replay the conversation with the thinking-binding-controls-2026-08-01 beta, Anthropic checks that the part of the request ahead of the block still matches what the block was created under dropblock, reported by Anthropic as a thinkingdropped entry in inputtransformations) or rejects the request with a 400 that names the part that differs (prefixmismatchbehavior: error). cachecontrol markers are left out of the comparison