DeepSeek launched experimental DeepSeek-V4-Flash-Vision-Exp on its API. Text capability—including agents, reasoning, and world knowledge—matches V4-Flash, while multimodal agent benchmarks jump toward Opus 4.8. It supports Chat Completions, Messages, and Responses, with mixed text/image input via base64, URLs, or the new Files API. Images bill at up to 384 tokens each at V4-Flash prices. DeepSeek Harness 0.1.1 ships with out-of-the-box support.
Key Takeaways
- ✓Open-weight multimodal agents are now claimed near Opus 4.8—material for screenshot-to-fix and visual UI work.
- ✓Chat Completions, Messages, and Responses compatibility lowers the cost of swapping the model into existing agent stacks.
- ✓Image billing at V4-Flash rates (≤384 tokens/image) keeps multimodal agent cost bounded.