DeepSeek V4 preview: 1M context, MIT weights, $0.87/Mtok output

V4-Pro (1.6T/49B active) and V4-Flash (284B/13B) ship with a 1M-token default window and open-source SOTA on agentic coding — trailing only Gemini 3.1 Pro on world knowledge. At these prices, 'why pay frontier rates for routine agent work' becomes a spreadsheet question, not an ideology.

Sources

The Chronicle timeline →The firehose →This week in coding agents →