DeepSeek / DeepSeek V4
DeepSeek V4.1 Flash
Version DeepSeek-V4.1-Flash · Released 2026-09-10 · Available
Compare this model ↗01 / EVIDENCE
Benchmark breakdown
| Benchmark | Version | Method | Configuration | Result | Test date | Verified | Source type | Source |
|---|---|---|---|---|---|---|---|---|
| SkillsBench Vals OpenHands with skills | Vals 2026-09-27 | Vals OpenHands harness with skills | — | 69.8 % | 2026-09-27 | 2026-09-29 | independent lab | View source ↗ |
| LiveBench code_completion | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 82.609 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench code_generation | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 77.465 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench javascript | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 81.818 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench AMPS_Hard | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 98 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench olympiad | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 89.081 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench theory_of_mind | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 80.769 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
| LiveBench zebra_puzzle | 2026-06-25 | Public table; published model effort variant | deepseek-v4.1-flash-max | 100 % | not published | 2026-09-30 | benchmark maintainer | View source ↗ |
02 / COST
Price & speed
Input / 1M tokens $0.30
Output / 1M tokens $1.20
Cached input / 1M —
Batch input / 1M —
Batch output / 1M —
Speed No comparable observation yet
Price verified 2026-09-29
Price scope API ID deepseek-flash. Peak cache-miss input rate; off-peak and cache-hit rates differ
Price source Official pricing ↗
02A / PERFORMANCE
Measured speed
No sourced speed measurement at a stated effort level yet.
03 / PROFILE
Capabilities
04 / CONTEXT
Strengths & limitations
Coverage: 73% · Limited evidence · 8 observations · 2 source domains (2 independent).
Why no Overall AIQuantumScore?
Qualified category evidence: coding, reasoning, math, agents. An overall score is withheld because the independent observation threshold has not been met. Evidence still missing or lacking comparable overlap: research, multimodal, speed.
05 / HISTORY
Version & price history
Version DeepSeek-V4.1-Flash · released 2026-09-10.
2026-09-29: $0.30 input / $1.20 output per 1M tokens · Price source ↗
06 / SOURCES
Source records
- DeepSeek V4.1 Flash official documentation ↗ · verified 2026-09-29
- DeepSeek official pricing ↗ · verified 2026-09-29
DATED EVIDENCE
History
Standard API price history
- 2026-09-29: 0.525 USD / 1M · 75% input / 25% output USD per 1M · source ↗
One observation; no trend can be inferred.
SkillsBench Vals OpenHands with skills / Vals 2026-09-27 / %
- 2026-09-27: 69.8 result · Vals OpenHands harness with skills · source ↗
One observation; no trend can be inferred.
LiveBench code_completion / 2026-06-25 / %
- 2026-09-30: 82.609 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench code_generation / 2026-06-25 / %
- 2026-09-30: 77.465 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench javascript / 2026-06-25 / %
- 2026-09-30: 81.818 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench AMPS_Hard / 2026-06-25 / %
- 2026-09-30: 98 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench olympiad / 2026-06-25 / %
- 2026-09-30: 89.081 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench theory_of_mind / 2026-06-25 / %
- 2026-09-30: 80.769 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
LiveBench zebra_puzzle / 2026-06-25 / %
- 2026-09-30: 100 result · Public table; published model effort variant · evaluation date not published; verification date shown · source ↗
One observation; no trend can be inferred.
agents category score history
- 2026-09-30: 100 score · Scoring 3.0.0
One observation; no trend can be inferred.
07 / EXPLORE