Model lifecycle
DeepSeek V4 Flash
Released 2026-04-24 · Back to DeepSeek
Exact-version signals observed 2026-06-12–2026-07-31 · n=1,839
Lifecycle updated daily · latest complete UTC day 2026-07-31
- Fixed 14-day baseline
- 72.1 n=116
- Latest 28 days
- 75.9 n=1,457
- Change vs baseline
- +3.8
- 90-day slope
- +1.2 pts / 30 days
14-day rolling experience
Each daily point summarizes the previous 14 complete UTC days. The dashed line is the fixed release baseline; the verdict still uses independent non-overlapping 14-day segments.
4 of 4 independent 14-day segments ready for trend judgment.
What explains the change
Experience change and discussion-mix change are separated. These are observational contributions, not proof of cause.
Largest negative experience contributions: Speed & latency, Local deploy.
| Category | Baseline → current | Category change | Weight share | Experience contribution | Discussion-mix contribution |
|---|---|---|---|---|---|
| Speed & latency | 79.0 → 75.5n=52 → 475 | −3.6 | 43.7% → 32.5% | −1.36 | −0.55 |
| Local deploy | 67.7 → 65.9n=13 → 64 | −1.9 | 9.4% → 4.0% | −0.12 | +0.29 |
| Reasoning | 70.5 → 85.5n=13 → 271 | +15.0 | 11.6% → 20.5% | +2.40 | +0.51 |
| General text | 57.1 → 74.4n=32 → 473 | +17.3 | 25.8% → 30.3% | +4.85 | −0.30 |
| Coding | not enough datan=9 → 141 | – | – | – | – |
| Image / vision | not enough datan=2 → 23 | – | – | – | – |
| Roleplay / creative | not enough datan=0 → 7 | – | – | – | – |
| Safety & refusals | not enough datan=0 → 9 | – | – | – | – |
Unresolved contribution from categories below the sample threshold: −1.92 pts.
Lifecycle scores use the same experience-signal weights as the main index, without sample shrinkage after n=30. They measure public user perception, not model capability or backend causes.