More Models from DeepSeek
Compare other engines available in this laboratory.
V4 Pro is a high-performance foundation model engineered by DeepSeek, accessible with Zero Data Retention on ARMES.
DeepSeek-V4.1-Flash is DeepSeek's first Causal Encoder-Decoder (CED) frontier model: a 552B-parameter multimodal sparse MoE that activates only 8B parameters during prefill and 16B during decode, with a 1M-token context window, native image understanding, and aggressive FP4/compressed KV caching. It tops agentic terminal and software-engineering boards (90.6 on Terminal-Bench 2.1, 74.2 on DeepSWE v1.1 at max effort) at roughly $0.15/$0.60 per 1M tokens, and supersedes V4-Pro in production traffic.
Terminal-Bench 2.1: 82.7%, CyberGym: 76.7%, Toolathlon-Verified: 70.3%, DSBench-FullStack: 68.7%, DSBench-Hard: 59.6%, DeepSWE: 54.4%, NL2Repo: 54.2%, Agents' Last Exam: 25.2%, AutomationBench Public: 25.1%, Artificial Analysis Intelligence Index: 50 | The official GA release of V4 Flash, superseding the April preview (released Jul 31, 2026).