Use open weight models as your AI coding agent with Amazon Bedrock

This article demonstrates how to use OpenCode, an open-source terminal-native AI coding agent, with open weight models on Amazon Bedrock for secure and cost-effective AI-assisted development.

• OpenCode runs locally while inference happens securely within AWS accounts with no per-seat fees
• Route different coding tasks to different models: Kimi K3 for reasoning, GPT-OSS 120B for generation, Nemotron 3 Super 120B for throughput
• Multi-model workflows automatically assign optimal models to planning, debugging, and code generation tasks
• Data residency, compliance, and enterprise security controls inherited from Amazon Bedrock infrastructure
• Flex tier pricing offers 50% cost reduction for latency-tolerant batch coding tasks
• Production deployment example: Ethara.AI uses multi-agent orchestration with Oh-My-OpenAgent for specialized AI engineering workflows

OpenCode with Bedrock enables developers to build flexible, secure AI coding assistants that optimize cost and performance by matching models to specific tasks.