DeepSeek, OpenCode stack rivals closed models

While closed frontier models still lead in complex, long-horizon tasks, the OpenCode and DeepSeek V4 Flash stack proves that open-weights local solutions are now good enough for the vast majority of developer workloads at a fraction of the cost.

• –**Cost Efficiency:** Running DeepSeek V4 Flash via OpenCode drastically undercuts SaaS subscriptions, allowing developers to pay only for raw API tokens or run completely locally.
• –**Agentic Capability:** OpenCode provides a terminal-native, model-agnostic TUI featuring plan and build modes that rival IDE-integrated coding assistants.
• –**Privacy & Customization:** The open stack allows self-hosting and direct provider connections, keeping proprietary codebases secure and free from third-party server exposure.
• –**Performance Tradeoff:** While the MoE model (284B total, 13B active parameters) matches frontier capabilities for routine implementation, it still falls short on complex, multi-file planning tasks.