DeepSeek V4.1 Flash 1017 vs Qwen3.5 Plus 2026-02-15

Pick up to 3 models · pricing, context and capabilities · simulate your product cost

Data updated on November 14, 2026· 230 models

DeepSeekFlash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the deepseek-flash API model name.

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Reasoning estimated
Speed estimated
▲
Input
Output
Context
▲1 M tokens
Max output
▲944 K
Input, $ per 1M tokens
▲$0.038
Output, $ per 1M tokens
▲$0.500
Cache read, $ per 1M
$0.010
Batch (input / output)
$0.050 / $0.150
Tool calling
Yes
Released
▲10/17/2026
Knowledge cutoff
2025-05
API id
deepseek/deepseek-v4.1-flash-1017
QwenPlus 2026-02-15

The Qwen3.5 native vision-language series Plus models are built on a hybrid architecture that integrates linear attention mechanisms with sparse mixture-of-experts models, achieving higher inference efficiency.

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Reasoning estimated
▲
Speed estimated
Input
Output
Context
1 M tokens
Max output
66 K
Input, $ per 1M tokens
$0.260
Output, $ per 1M tokens
$1.56
Cache read, $ per 1M
—
Batch (input / output)
—
Tool calling
Yes
Released
02/16/2026
Knowledge cutoff
—
API id
qwen/qwen3.5-plus-02-15
Third model (optional)
text image audio video PDF / file reasoning (1 to 5, estimated by family) speed (1 to 4, estimated by family)▲ best value among the selected

Which is the better API choice: DeepSeek V4.1 Flash 1017 vs Qwen3.5 Plus 2026-02-15?

  • DeepSeek V4.1 Flash 1017: cheapest input (85% less than Qwen3.5 Plus 2026-02-15)
  • DeepSeek V4.1 Flash 1017: cheapest output
  • DeepSeek V4.1 Flash 1017: largest context (1 M)
  • DeepSeek V4.1 Flash 1017: the newest (10/17/2026)
  • Qwen3.5 Plus 2026-02-15: most reasoning (estimated)
  • DeepSeek V4.1 Flash 1017: the fastest (estimated)

DeepSeek V4.1 Flash 1017 costs 85% less on input and 68% less on output than Qwen3.5 Plus 2026-02-15 ($0.038 / $0.500 versus $0.260 / $1.56 per million tokens). DeepSeek V4.1 Flash 1017 accepts more context (1 M). DeepSeek V4.1 Flash 1017 offers a batch tier at half price for jobs that do not need an immediate answer.

What would your product cost?

Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.

DeepSeek V4.1 Flash 1017
$2.57/mo
Qwen3.5 Plus 2026-02-15
$10.14/mo

With DeepSeek V4.1 Flash 1017 you save $7.57 a month versus Qwen3.5 Plus 2026-02-15 (75% less).

The 6 cheapest for this scenario (chat, last 12 months)

  1. 1Lyria 3 Pro Preview Google$0.00
  2. 2Lyria 3 Clip Preview Google$0.00
  3. 3Qwen3.7 Flash Qwen$0.97
  4. 4DeepSeek V4.1 Flash DeepSeek$1.57
  5. 5DeepSeek V4 Flash 0731 DeepSeek$1.85
  6. 6Ministral 3 3B 2512 Mistral$1.90

Paste your prompt: tokens and cost per model

Rough estimate (about 4 characters per token). Nothing is sent to any server.

76tokens approx.287 characters

Cost of sending it 1,000 times (input only)

  1. 1DeepSeek V4.1 Flash 1017 DeepSeek$0.003
  2. 2Claude Haiku 5.5 Anthropic$0.008
  3. 3Qwen3.5 Plus 2026-02-15 Qwen$0.020
  4. 4Claude Sonnet 5.5 Anthropic$0.152
  5. 5Claude Opus 5.5 Anthropic$0.304
  6. 6Claude Opus 5 Anthropic$0.380
  7. 7Claude Fable 5.2 Anthropic$0.608
  8. 8Claude Fable 5.1 Anthropic$0.760

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Frequently asked questions

Which is the better API choice: DeepSeek V4.1 Flash 1017 vs Qwen3.5 Plus 2026-02-15?

DeepSeek V4.1 Flash 1017 costs 85% less on input and 68% less on output than Qwen3.5 Plus 2026-02-15 ($0.038 / $0.500 versus $0.260 / $1.56 per million tokens). DeepSeek V4.1 Flash 1017 accepts more context (1 M). DeepSeek V4.1 Flash 1017 offers a batch tier at half price for jobs that do not need an immediate answer.

Which is cheaper: DeepSeek V4.1 Flash 1017 and Qwen3.5 Plus 2026-02-15?

DeepSeek V4.1 Flash 1017 is cheaper: $0.038 per million input tokens and $0.500 per million output tokens, versus $0.260 / $1.56 for Qwen3.5 Plus 2026-02-15.

Which has more context: DeepSeek V4.1 Flash 1017 and Qwen3.5 Plus 2026-02-15?

DeepSeek V4.1 Flash 1017 accepts 1 M tokens of context; Qwen3.5 Plus 2026-02-15 accepts 1 M.

Which is newer: DeepSeek V4.1 Flash 1017 and Qwen3.5 Plus 2026-02-15?

DeepSeek V4.1 Flash 1017 was released on 10/17/2026; Qwen3.5 Plus 2026-02-15 on 02/16/2026.

What would 10,000 requests a month cost with DeepSeek V4.1 Flash 1017 and Qwen3.5 Plus 2026-02-15?

With 1,500 input and 400 output tokens per request: DeepSeek V4.1 Flash 1017: $2.57; Qwen3.5 Plus 2026-02-15: $10.14 a month, at list price.

Where do the prices come from and how often are they updated?

From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.

What does price per million tokens mean?

It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.

Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.