DeepSeek V4.1 Flash 1017: Release Intelligence, Performance & Price
Model summary
Verbosity
The DeepSeek V4.1 Flash 1017 release offers 3 models, each with different intelligence, performance, and pricing characteristics. Below is a comparison of the key metrics across the 3 models.
- For intelligence, the top model of DeepSeek V4.1 Flash 1017 is DeepSeek V4.1 Flash 1017 (Max) at 33.
- For speed, DeepSeek V4.1 Flash 1017 (Non-reasoning) at 8.4 min has the lowest time per task.
- For latency, DeepSeek V4.1 Flash 1017 (Non-reasoning) at 1.31s offers the lowest time to first answer token.
- For pricing, DeepSeek V4.1 Flash 1017 (Non-reasoning) at $0.43 offers the lowest cost per task. Prices vary up to 1.4x across models.
| Input modality | Supports: text and image |
|---|---|
| Output modality | Supports: text |
| Context window | 1M ~1500 A4 pages of size 12 Arial font |
| Total parameters | 552B |
| Active parameters | 16B Number of parameters active per token during inference |
| License | MIT |
| Model weights | Hugging Face |
Metrics are compared against models of the same class:
- Non-reasoning models → compared only with other non-reasoning models
- Reasoning models → compared across both reasoning and non-reasoning
- Open weights models → compared only with other open weights models of the same size class:
- Tiny: ≤4B parameters
- Small: 4B–40B parameters
- Medium: 40B–150B parameters
- Large: >150B parameters
- Proprietary models → compared across proprietary and open weights models of the same price range, using a blended 3:1 input/output price ratio:
- <$0.15 per 1M tokens
- $0.15–$1 per 1M tokens
- >$1 per 1M tokens
Intelligence
Artificial Analysis Intelligence Index
Intelligence Index vs. Cost per Task
Cost
Cost per Intelligence Index Task
Speed & Latency
Time per Intelligence Index Task
Capability Scores
Capability Indexes
Incorporates 5 evaluations: AA-Briefcase v1.1, AA-Omniscience v1.1, HLE-Diamond, AutomationBench-AA, GDP.pdf · Higher is better
Incorporates 4 evaluations: AutomationBench-AA, AA-Briefcase v1.1, AA-Omniscience v1.1, GDP.pdf · Higher is better
Incorporates 5 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, HLE-Diamond, GDP.pdf, AutomationBench-AA · Higher is better
Incorporates 5 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, MLCR-AA, AutomationBench-AA, HLE-Diamond · Higher is better
Incorporates 7 evaluations: AA-Omniscience v1.1, CritPt v2 (Hard Subset), Terminal-Bench-Science 0.1, HLE-Diamond, Terminal-Bench 4.0, FrontierCode 2.0, AA-Briefcase v1.1 · Higher is better
Incorporates 4 evaluations: AA-Omniscience v1.1, AA-Briefcase v1.1, HLE-Diamond, GDP.pdf · Higher is better
Evaluations
Agentic knowledge work, Elo
Knowledge
1 - hallucination rate
Agentic SaaS workflows
Agentic scientific research workflows in a terminal
Agentic software engineering in open-source repositories
Reasoning & knowledge
Professional document reasoning, All-pass
Agentic coding & terminal use
Physics reasoning
Agentic real-world work tasks, Elo
Medical long context reasoning
Visual reasoning
Rich, varied, well-crafted language
Well-structured, scannable, answer-first
Truthful, acknowledges uncertainty, non-sycophantic
Use of filler and generic language
AA-PersonalityBench
Personality Indexes
More from DeepSeek
Further details
Weights | Provider Benchmarks | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| DeepSeek V4.1 Flash 1017 (Max) |  DeepSeek | 33 | 552B 16B active at inference time | 1M | $0.18 | 16.2 | 143 |    +18 | ||
| DeepSeek V4.1 Flash 1017 (High) | DeepSeek | 29 | 552B 16B active at inference time | 1M | $0.18 | 12.6 | 146 | | ||
| DeepSeek V4.1 Flash 1017 (Non-reasoning) | DeepSeek | 19 | 552B 16B active at inference time | 1M | $0.18 | 8.4 | 130 |   +3 |