DeepSeek Launches V4.1-Flash at ~2.5% of Opus 5's Cost, Beating Flagships on DeepSWE
ccerrato147 · x · 2026-09-10
DeepSeek officially released V4.1-Flash, claiming it beats Opus 5 and GPT-5.6 Sol on DeepSWE v1.1 and other benchmarks.
- 2.5% of Opus 5's API cost
- Smallest model in a new architecture family, with native visual understanding
- New pretraining techniques plus much larger-scale RL post-training
- Built for higher capability, faster inference and throughput, scaling up to bigger models
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