DeepSeek V4.1 Flash API
Pay 91% less.
On input and output tokens, compared with official prices.
OpenAI-compatible · Pay as you go
deepseek-v4.1-flashDeepSeek V4.1 Flash
overview.
DeepSeek V4.1 Flash is an open-weight reasoning model with visual understanding. This entry is the 1017 release from 17 October 2026, rather than the earlier September version. It is distinct from DeepSeek V4 Pro: compare their published input capabilities, evaluation results and current token rates before choosing between the two.
Published model specifications
OPTIONAL / CONNECTIONAPI request example
Set the model ID and base URL in your OpenAI-compatible client.
https://aelder.dev/v1Compare DeepSeek model prices or follow the Python and JavaScript SDK setup. n8n connection guide covers a small text workflow.
import os
from openai import OpenAI
client = OpenAI(
api_key=os.environ["AELDER_API_KEY"],
base_url="https://aelder.dev/v1",
)
response = client.chat.completions.create(
model="deepseek-v4.1-flash",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.AELDER_API_KEY,
baseURL: "https://aelder.dev/v1",
});
const response = await client.chat.completions.create({
model: "deepseek-v4.1-flash",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(response.choices[0].message.content);curl https://aelder.dev/v1/chat/completions \
-H "Authorization: Bearer $AELDER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "deepseek-v4.1-flash",
"messages": [{"role": "user", "content": "Hello!"}]
}'deepseek-v4.1-flashChat CompletionsDeepSeek V4.1 Flash benchmarks.
Compare models in the AELDER catalog on the same external measure. The Artificial Analysis Intelligence Index combines evaluations of model capability. Higher is better; the score is not a percentage.
Artificial Analysis Intelligence Index
VERSION 4.3.2 · INDEX POINTS · HIGHER IS BETTER| Model | Source configuration | Index |
|---|---|---|
| Claude Opus 5.5 | Claude Opus 5.5 (Max, Default Fallback) | 58 |
| Claude Sonnet 5.5 | Claude Sonnet 5.5 (Max, Default Fallback) | 56 |
| Claude Fable 5.1 | Claude Fable 5.1 (Max, Default Fallback) | 53 |
| GPT 6 Astra | GPT-6 Astra (Max) | 53 |
| GPT 6.1 Sol | GPT-6.1 Sol (Max) | 52 |
| Claude Opus 5 | Claude Opus 5 (Max) | 51 |
| Claude Fable 5 | Claude Fable 5 (Max, Opus 4.8 Fallback) | 50 |
| GPT 6 Sol | GPT-6 Sol (Max) | 48 |
| GPT 5.6 Sol | GPT-5.6 Sol (Max) | 47 |
| DeepSeek V4.1 FlashCurrent | DeepSeek V4.1 Flash 1017 (Max) | 45 |
| GLM 5.3 | GLM-5.3 (Max) | 45 |
| Qwen3.8 Max 0902 | Qwen3.8 Max (0902) | 45 |
| Grok 4.6 | Grok 4.6 (Xhigh) | 44 |
| Kimi K3 | Kimi K3 (Max) | 44 |
| Claude Haiku 5.5 | Claude Haiku 5.5 (Max) | 43 |
| Claude Opus 4.8 | Claude Opus 4.8 (Max) | 42 |
| GLM 5.3 Flash | GLM-5.3-Flash | 42 |
| GPT 5.6 Terra | GPT-5.6 Terra (Max) | 42 |
| Claude Opus 4.7 (1M) | Claude Opus 4.7 (Max) | 41* |
| Gemini 3.8 Flash | Gemini 3.8 Flash (High) | 41 |
| Qwen3.8 2.4T-A95B | Qwen3.8 2.4T A95B | 40 |
| Qwen3.8 Max | Qwen3.8 Max | 40 |
| Claude Sonnet 5 | Claude Sonnet 5 (Max) | 38 |
| GPT 6 Luna | GPT-6 Luna (Max) | 38 |
| GPT 5.6 Luna | GPT-5.6 Luna (Max) | 37 |
| DeepSeek V4 Pro | DeepSeek V4 Pro 0813 (Max) | 36 |
| GLM 5.2 | GLM-5.2 (Max) | 34 |
| Qwen3.8 27B | Qwen3.8 27B (Xhigh) | 34 |
| GPT 5.3 Codex | GPT-5.3 Codex (Xhigh) | 33* |
| Claude Opus 4.6 | Claude Opus 4.6 (Max) | 32* |
| Claude Sonnet 4.6 | Claude Sonnet 4.6 (Max) | 30 |
| Gemini 3.1 Pro | Gemini 3.1 Pro Preview | 30 |
| Claude Opus 4.5 | Claude Opus 4.5 (Reasoning) | 29* |
| MiniMax M3 | MiniMax-M3 | 29 |
| Kimi K2.6 | Kimi K2.6 (Reasoning) | 27 |
| GLM 5.1 | GLM-5.1 (Reasoning) | 26 |
| Kimi K2.7 Code | Kimi K2.7 Code | 26 |
| Hy3 | Hy3 | 25 |
| DeepSeek V4 Flash | DeepSeek V4 Flash 0420 (Max) · April 2026 reference | 24 |
| Kimi K2.5 | Kimi K2.5 (Reasoning) | 23* |
| MiniMax M2.7 | MiniMax-M2.7 | 23 |
DeepSeek V4 Flash uses the April 0420 release reference, labelled in the chart and table. External results refer to the labelled source configurations, which may differ from AELDER’s configuration. They do not measure AELDER API speed or uptime. Source score markers (*) are preserved.
Why are 4 catalog models missing a score?
41 of 45 catalog models have a source reference on this index version. A missing result is not a zero score. These models remain in the catalog.
DeepSeek V4.1 Flash alternatives.
DeepSeek V4.1 Flash
questions, answered.
Which DeepSeek V4.1 Flash release is this?
deepseek-v4.1-flash on AELDER. The external benchmark is explicitly labelled DeepSeek V4.1 Flash 1017 (Max).How does Flash compare with DeepSeek V4 Pro on price?
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