# DeepSeek-V4-Flash

DeepSeek-V4-Flash is an AI model released by DeepSeek on Apr 24 2026. It has open weight. At release it scored 18% on BullshitBench v2, 88.1% on GPQA Diamond and 91.6% on LiveCodeBench.

## Facts

| Field | Value |
| --- | --- |
| Model | DeepSeek-V4-Flash |
| Developer | DeepSeek |
| Release date | Friday, Apr 24 2026 |
| Licensing | Open Weight |

## Benchmark scores published at release

| Benchmark | Score | Source | What it measures |
| --- | --- | --- | --- |
| BullshitBench v2 | 18% | Lab | Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. |
| LiveCodeBench | 91.6% | [BenchLM](https://benchlm.ai), retrieved 2026-07-11 | Coding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. |
| GPQA Diamond | 88.1% | Lab | Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. |

## Questions and answers

### When was DeepSeek-V4-Flash released?

DeepSeek-V4-Flash was released by DeepSeek on Friday, Apr 24 2026.

### Who made DeepSeek-V4-Flash?

DeepSeek-V4-Flash was built by DeepSeek. Chinese AI lab known for efficient, open-weight models. Gained attention for strong performance at lower cost.

### What benchmark scores did DeepSeek-V4-Flash get?

DeepSeek-V4-Flash reports 3 tracked benchmark scores — BullshitBench v2: 18%; LiveCodeBench: 91.6%; GPQA Diamond: 88.1%. Scores are the figures published at release by DeepSeek.

### Is DeepSeek-V4-Flash open source?

Partly. DeepSeek-V4-Flash is an open-weight model: the trained weights are free to download and run locally or on your own infrastructure, but the training data and code are not fully released and the license may restrict some commercial uses. It is not open source in the strict sense.

### What came before and after DeepSeek-V4-Flash?

DeepSeek's previous tracked release was DeepSeek-V4-Pro on Apr 24 2026. It was followed by DeepSeek-V4-Flash-0731 on Jul 31 2026.


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Canonical page: https://aireleasetracker.com/model/deepseek/deepseek-v4-flash
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.