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Home/Qwen 3.8 Flash vs DeepSeek V4-Flash
Winner: Qwen 3.8 FlashAlibaba vs DeepSeek

Qwen 3.8 Flash vs DeepSeek V4-Flash

DeepSeek V4-Flash wins on coding (87 vs 84) and price ($0.14 vs $0.16/1M input). For most workflows, Qwen 3.8 Flash is the stronger default — swe-bench pro 62.5 at sixteen cents per million input.

Last verified Aug 27, 2026/Model data modified Aug 27, 2026
Rankings refresh dailyScored on 6 criteriaNo paid rankings
AlibabaBudget
Input cost
$0.16/1M
Context
991k tokens
Speed
Very fast

Clear recommendation block

The shortest way to see the safest default, the lower-cost option, and the specialist pick before you read deeper.

Best overall model

Qwen 3.8 Flash

View
Why this recommendation

Qwen 3.8 Flash is the safest overall answer here when you want the strongest default instead of the lowest list price.

AlibabaBudget
Best for
Cheap high-throughput coding and reasoning
Price
$0.16/1M
Context
991k tokens
Best budget model

Mistral: Mistral Nemo

View
Why this recommendation

Mistral: Mistral Nemo is the lower-cost option to start with when you still need useful output at scale.

MistralBudget
Best for
Teams needing a cheap, fast, multilingual workhorse for classification, summarization, or light coding tasks at scale.
Price
$0.02/1M
Context
131k tokens
Best for speed

DeepSeek V4-Flash

View
Why this recommendation

DeepSeek V4-Flash is the better pick when response speed matters more than maximum reasoning depth.

DeepSeekBudget
Best for
High-volume agentic coding and tool-use pipelines
Price
$0.14/1M
Context
1M tokens

Why this page recommends it

DeepSeek V4-Flash leads on coding with a score of 87 vs 84 for Qwen 3.8 Flash.

DeepSeek V4-Flash has the larger context window: 1M vs 991K for Qwen 3.8 Flash.

DeepSeek V4-Flash is cheaper at $0.14/1M input tokens vs $0.16/1M for Qwen 3.8 Flash.

Decision notes

Qwen 3.8 Flash is the safer default: it is built for cheap high-throughput coding and reasoning, which covers most of what people bring to this comparison.

DeepSeek V4-Flash earns its place when your work is mostly high-volume agentic coding and tool-use pipelines, even though it loses the overall count here.

DeepSeek V4-Flash is the more cost-efficient option at $0.14/1M input — Qwen 3.8 Flash costs 1x more per input token, so the gap is worth taking seriously wherever token volume rather than peak quality drives the bill.

Interactive decision lab

Test the recommendation against your priority

Switch the scoring lens to see whether the top answer changes when you care more about cost, speed, or long-document work.

#1Qwen 3.8 Flash79 pts
#2DeepSeek V4-Flash79 pts
Quality first

Qwen 3.8 Flash

Alibaba / Budget / Aug 27, 2026

79

SWE-bench Pro 62.5 at sixteen cents per million input.

Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.

Cost
$0.16/1M
$0.47/1M out
Speed
Very fast
5/5 score
Context
991k tokens
input window
View model
Data-backed recommendation
Avoid this pick if

You need Alibaba's maximum capability — that is Qwen 3.8 Max — or a SWE-bench Verified number.

Recommended comparisons

The fastest way to see where the recommendation shifts when your priority changes.

AlibabaBudgetWinner: Qwen 3.8 Flash

Qwen 3.8 Flash

SWE-bench Pro 62.5 at sixteen cents per million input.

Best use case
Cheap high-throughput coding and reasoning
Input
$0.16/1M
Pricing
Budget
Speed
Very fast
Context
991k tokens
Open weightsBudgetCoding
DeepSeekBudgetOption 2

DeepSeek V4-Flash

Best agentic capability per dollar in the directory.

Best use case
High-volume agentic coding and tool-use pipelines
Input
$0.14/1M
Pricing
Budget
Speed
Fast
Context
1M tokens
Open weightsBudgetAgentic

Side-by-side specs

Every figure below is the provider's list price or a published capability score — the same numbers the recommendation on this page is built from.

ModelInputOutputEst. monthContextSpeedCodingWritingResearch
Qwen 3.8 FlashAlibaba$0.16/1M$0.47/1M$2.54991k tokensVery fast847678
DeepSeek V4-FlashDeepSeek$0.14/1M$0.28/1M$1.961M tokensFast877478

Capability scores are out of 100 and reflect our own weighting of published benchmarks and production signals — see how we evaluate models. “Est. month” assumes 10M input and 2M output tokens at list price, with no batch or caching discounts applied, so treat it as a ceiling.

The case for each model

What each one is genuinely good at, where it falls down, and the situations we would steer you away from it — not just the headline score.

Qwen 3.8 Flash

Winner: Qwen 3.8 FlashAlibaba

Alibaba's preview of the Qwen4 architecture — 125B parameters with only 6B active per token, at sixteen cents per million input.

Input
$0.16/1M
Output
$0.47/1M
Context
991k tokens
Speed
Very fast

What people actually use it for

  • Volume coding work where SWE-bench Pro 62.5 is enough and cost per token dominates
  • Near-1M-context document processing at budget-tier rates
  • Self-hosted inference on modest hardware thanks to 6B active parameters per token

Where it wins

  • SWE-bench Pro 62.5 — competitive with models several times its price
  • Only 6B active parameters per token from a 125B mixture-of-experts, so throughput is high and hosting is cheap
  • 991K context window at $0.16/$0.47

Where it falls down

  • No published SWE-bench Verified score, only SWE-bench Pro
  • An architecture preview rather than a settled flagship — Qwen 3.8 Max remains Alibaba's top-end model

Skip it if

You need Alibaba's maximum capability — that is Qwen 3.8 Max — or a SWE-bench Verified number.

Our verdict

One of the best coding-score-per-dollar picks in the catalog. Route volume work here and reserve Qwen 3.8 Max or a frontier model for the hard cases.

Released August 26, 2026. The open-weight release is Qwen3.8-Flash-Next, a preview of the Qwen4 architecture: 125B mixture-of-experts with 6B active per token, a 51B n-gram embedding table and a 4B multi-token prediction layer. Qwen 3.8 Flash is the production API version on Qwen Cloud at $0.16/$0.47.

DeepSeek V4-Flash

DeepSeek

A 284B-parameter (13B active) MoE workhorse re-post-trained for agentic and coding tasks — beats the V4-Pro preview on every published agent benchmark at ultra-commodity pricing.

Input
$0.14/1M
Output
$0.28/1M
Context
1M tokens
Speed
Fast

What people actually use it for

  • Agent pipelines at $0.14/1M input — Terminal-Bench 2.1 82.7 rivals models 30x its price
  • Tool-calling workloads (Toolathlon-Verified 70.3) with 2,500 concurrent requests
  • Self-hosting in ~110 GB at 3-bit quantization under MIT license

Where it wins

  • Terminal-Bench 2.1 82.7 — up from 61.8 in the April preview, beating V4-Pro (Preview) on all nine published agent benchmarks
  • Strong tool-calling and security-task results (Toolathlon-Verified 70.3, Cybergym 76.7)
  • $0.14/$0.28 per 1M with 1M context and MIT-licensed weights

Where it falls down

  • Well behind GPT-5.6, Opus-class, and Gemini frontier models on the hardest reasoning and long-horizon work
  • Text-only, and several headline numbers come from DeepSeek's own unreleased eval framework

Skip it if

You need vision input or frontier-grade reasoning on the hardest tasks.

Our verdict

The best cheap agent engine of 2026. At $0.14/1M input with an 82.7 Terminal-Bench score, nothing touches its agentic capability per dollar. Use it for volume; escalate the hard 10% to a frontier model.

Official V4-Flash-0731 release July 31, 2026; weights on Hugging Face, API in public beta. Only DeepSeek model supporting the Responses API. DeepSeek has warned of a future price increase.

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FAQ

Is Qwen 3.8 Flash better than DeepSeek V4-Flash?

Qwen 3.8 Flash wins on more of the categories we score — budget, coding, reasoning — so it is the better default of the two. DeepSeek V4-Flash is the better pick when your work is mostly high-volume agentic coding and tool-use pipelines. Neither is universally "better": Qwen 3.8 Flash is aimed at cheap high-throughput coding and reasoning, DeepSeek V4-Flash at high-volume agentic coding and tool-use pipelines.

Which is cheaper — Qwen 3.8 Flash or DeepSeek V4-Flash?

DeepSeek V4-Flash is cheaper at $0.14/1M input and $0.28/1M output. Qwen 3.8 Flash costs $0.16/1M input and $0.47/1M output.

Which has a larger context window — Qwen 3.8 Flash or DeepSeek V4-Flash?

DeepSeek V4-Flash has the larger context window at 1M tokens vs Qwen 3.8 Flash's 991K. For large document analysis, DeepSeek V4-Flash is the stronger pick.

Is Qwen 3.8 Flash or DeepSeek V4-Flash better for coding?

DeepSeek V4-Flash is better for coding with a score of 87 vs Qwen 3.8 Flash's 84 (out of 100). Claude Fable 5 is the overall coding leader in this directory at 100/100.

Which is faster — Qwen 3.8 Flash or DeepSeek V4-Flash?

Qwen 3.8 Flash is faster with a very fast speed rating (score: 5) vs DeepSeek V4-Flash's fast rating (score: 4). Speed matters most for interactive and high-throughput work; for batch jobs the DeepSeek V4-Flash latency penalty is usually invisible.

What are the downsides of Qwen 3.8 Flash?

No published SWE-bench Verified score, only SWE-bench Pro. An architecture preview rather than a settled flagship — Qwen 3.8 Max remains Alibaba's top-end model. Avoid it if you need Alibaba's maximum capability — that is Qwen 3.8 Max — or a SWE-bench Verified number. That is the main case for looking at DeepSeek V4-Flash instead.

What are the downsides of DeepSeek V4-Flash?

Well behind GPT-5.6, Opus-class, and Gemini frontier models on the hardest reasoning and long-horizon work. Text-only, and several headline numbers come from DeepSeek's own unreleased eval framework. Avoid it if you need vision input or frontier-grade reasoning on the hardest tasks. Against Qwen 3.8 Flash specifically, the gap shows up most on coding (84 vs 87).

What does a month of real work cost on Qwen 3.8 Flash vs DeepSeek V4-Flash?

Take a moderate workload of 10M input and 2M output tokens a month. Qwen 3.8 Flash runs $2.54 (at $0.16/1M in and $0.47/1M out); DeepSeek V4-Flash runs $1.96 (at $0.14/1M in and $0.28/1M out). The gap is small enough that price should not decide this one. Output tokens dominate the bill on both, so prompt length matters far less than response length.

Can I use Qwen 3.8 Flash and DeepSeek V4-Flash together?

Yes, and for most teams that beats picking one. A common split is Qwen 3.8 Flash for cheap high-throughput coding and reasoning, with DeepSeek V4-Flash handling high-volume agentic coding and tool-use pipelines. Routing high-volume, low-stakes calls to DeepSeek V4-Flash at $0.14/1M and reserving Qwen 3.8 Flash for the hard cases is usually the cheapest arrangement that does not cost you quality.