{"exportVersion":1,"sourceSchemaVersion":1,"feedAsOf":"2026-09-30","selection":{"providerId":"deepseek","category":"all"},"feedUrl":"https://stackreplay.com/changelog/feed.json?provider=deepseek","items":[{"url":"https://stackreplay.com/changelog/deepseek-v4-1-flash-released","categories":["models"],"event":{"id":"deepseek-v4-1-flash-released","type":"model_release","importance":"major","occurredAt":"2026-09-10","dateBasis":"provider_publication_date","discoveredAt":"2026-09-30","verifiedAt":"2026-09-30","providerId":"deepseek","modelIds":["deepseek-v4-1-flash"],"planIds":[],"benchmark":{"sourceSetIds":["deepseek-flash-2026-09-10"],"benchmarkIds":[],"headlineBenchmarkId":"deep-swe-v1-1"},"title":"DeepSeek-V4.1-Flash released","summary":"DeepSeek's first model in a new architecture family, with native visual understanding, a 1M-token context and open weights.","status":"available","sources":[{"url":"https://api-docs.deepseek.com/updates/","title":"Change Log | DeepSeek API Docs","authority":"first_party","checkedAt":"2026-09-30","excerpt":"Date: 2026-09-10 DeepSeek-V4.1-Flash Release Today, we officially release the DeepSeek-V4.1-Flash model. It is the smallest model in our new architecture family, with native multimodal visual understanding."},{"url":"https://www.deepseek.com/en/news/deepseek-v4-1-flash/","title":"Introducing DeepSeek-V4.1-Flash","authority":"first_party","checkedAt":"2026-09-30","excerpt":"552B-parameter MoE. New Causal Encoder-Decoder architecture: just 8B active parameters for input, 16B for output."}]}},{"url":"https://stackreplay.com/changelog/deepseek-api-prices-cut","categories":["pricing"],"event":{"id":"deepseek-api-prices-cut","type":"api_price_change","importance":"notable","occurredAt":"2026-09-10","dateBasis":"provider_publication_date","discoveredAt":"2026-09-30","verifiedAt":"2026-09-30","providerId":"deepseek","modelIds":["deepseek-v4-1-flash"],"planIds":[],"title":"DeepSeek lowers API prices with V4.1-Flash","summary":"DeepSeek cut its API prices with the V4.1-Flash release, effective 04:00 UTC on September 10. Off-peak rates stay at half the peak rate.","status":"effective","sources":[{"url":"https://www.deepseek.com/en/news/deepseek-v4-1-flash/","title":"Introducing DeepSeek-V4.1-Flash","authority":"first_party","checkedAt":"2026-09-30","excerpt":"More efficient architecture. Lower API prices. ... New pricing takes effect at 04:00 UTC on Sept 10, 2026."},{"url":"https://api-docs.deepseek.com/updates/","title":"Change Log | DeepSeek API Docs","authority":"first_party","checkedAt":"2026-09-30","excerpt":"API pricing adjustment With the release of DeepSeek-V4.1-Flash, API prices have been reduced accordingly."},{"url":"https://api-docs.deepseek.com/quick_start/pricing","title":"Models & Pricing | DeepSeek API Docs","authority":"first_party","checkedAt":"2026-09-30","excerpt":"PRICING (2) 1M INPUT TOKENS (CACHE MISS) OFF-PEAK $0.15 ... PEAK $0.3 ... 1M OUTPUT TOKENS OFF-PEAK $0.6 ... PEAK $1.2"}]}},{"url":"https://stackreplay.com/changelog/deepseek-v4-flash-retired","categories":["models"],"event":{"id":"deepseek-v4-flash-retired","type":"model_retirement","importance":"minor","occurredAt":"2026-09-10","dateBasis":"provider_publication_date","discoveredAt":"2026-09-30","verifiedAt":"2026-09-30","providerId":"deepseek","modelIds":["deepseek-v4-flash","deepseek-v4-flash-vision-exp"],"planIds":[],"title":"DeepSeek V4 Flash and V4 Flash Vision Exp retired","summary":"Both previous-generation models were retired. Their model names temporarily route to V4.1-Flash.","status":"retired","sources":[{"url":"https://api-docs.deepseek.com/updates/","title":"Change Log | DeepSeek API Docs","authority":"first_party","checkedAt":"2026-09-30","excerpt":"The previous-generation models V4 Flash and V4 Flash Vision Exp have been retired; for compatibility, the model names deepseek-v4-flash and deepseek-v4-flash-vision-exp are temporarily routed to V4.1 Flash."}]}}]}