Head-to-head: DeepSeek V4 (free, open-weight, 7.7) vs Claude Opus 4 (best reasoning, premium, 9.1). When does free AI match the best? Real tests across reasoning, coding, and value.
Read full comparison →Head-to-head: DeepSeek V4 (free, open-weight, 7.7) vs ChatGPT/GPT-4o ($20/mo, 8.8). Real tests across reasoning, coding, browsing, and cost — is free good enough to skip the subscription?
Read full comparison →In-depth DeepSeek V4 review: the completely free, open-weight AI model with 1M context and strong coding (7.7/10). How it compares to ChatGPT, Claude, and Gemini for budget developers.
Read full comparison →