Merge Gatewayclaude-haikuClaude Haiku 4.5 (20251001)anthropic/claude-haiku-4-5-20251001Merge GatewayReleased Oct 15, 2025200,000 token context windowIn $1.00 · Out $5.00ReasoningTool callingStructured outputAttachmentsTemp controlsInputtextimagepdfOutputtext