Strands Agents 1.61.1 released

A patch release fixing issues with model reasoning, subagent reporting, context handling, and tool interactions.

What changed in 1.61.1

• Reasoning blocks are now dropped when rejected by target models across different model families in Bedrock.
• Subagents now report the child's actual stop reason instead of marking blocked runs as successful.
• Removal markers and summaries no longer appear in the first message of context.
• Adaptive thinking is sent to Claude Haiku 5.5 and tool results maintain proper adjacency with injected context.
• Text content blocks no longer silently drop when tool calls are pending in the same block.

Summarised by AgentGid from AWS's official release notes on GitHub, as reported there; read the original before relying on it. Price, status and release dates come from our daily data.