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DeepSeek V3.1 vs Qwen3 Next 80B A3B Instruct

DeepSeek V3.1 grades higher overall (68.7 against 62.5). Qwen3 Next 80B A3B Instruct costs 19% less for the same work.

DeepSeek V3.1

by DeepSeek · #31 of 67 overall

Coming soon · price at launch
Context
160K
Input / 1M
$0.25
Output / 1M
$0.95

Qwen3 Next 80B A3B Instruct

by Qwen · #37 of 67 overall

Coming soon · price at launch
Context
256K
Input / 1M
$0.090
Output / 1M
$1.10

Better overall

DeepSeek V3.1

Grade 68.7 vs 62.5

Cheaper

Qwen3 Next 80B A3B Instruct

19% less, $0.34 vs $0.42 blended

Larger context

Qwen3 Next 80B A3B Instruct

160K vs 256K tokens

Head to head

Public benchmarks. Longer is better; each value links to its source.

LMArena TextElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Qwen3 Next 80B A3B InstructQwen3 Next 80B A3B Instruct: 1,399
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Qwen3 Next 80B A3B InstructQwen3 Next 80B A3B Instruct: 1,444
Aider Polyglot% of exercises solved · Aider (aider.chat) · Sep 9, 2025
Qwen3 Next 80B A3B InstructQwen3 Next 80B A3B Instruct: 49.8%v
SWE-bench Verified% of issues resolved · SWE-bench · Aug 21, 2025 · reference
DeepSeek V3.1DeepSeek V3.1: 66%v
Qwen3 Next 80B A3B InstructQwen3 Next 80B A3B Instruct: —
LiveCodeBenchpass@1, % · LiveCodeBench · Sep 9, 2025 · reference
Qwen3 Next 80B A3B InstructQwen3 Next 80B A3B Instruct: 56.6%v

DeepSeek V3.1Qwen3 Next 80B A3B Instructv = reported by the model’s maker. — = no public score yet. Arena bars span the range across every model we grade.

What it costs you

Drag to match your monthly usage.

DeepSeek V3.1$88.00 /month
Qwen3 Next 80B A3B Instruct$62.00 /month

Qwen3 Next 80B A3B Instruct saves you $26.00 a month at this usage, $312 a year.

At a glance

AttributeDeepSeek V3.1Qwen3 Next 80B A3B Instruct
Made byDeepSeekQwen
AvailabilityComing soonComing soon
Overall gradeStrong · 68.7Strong · 62.5
Overall rank#31 of 67#37 of 67
Input price$0.25 per 1M$0.090 per 1M
Output price$0.95 per 1M$1.10 per 1M
Context window163,840 tokens262,144 tokens
Reasoning levelsYesYes
Reads imagesNoNo
Model IDdeepseek-v3.1qwen3-next-80b-a3b-instruct

Try both with one key

Same endpoint, same key, both hosted in the USA. Change one word to switch models, in Claude Code, Cursor, Cline or your own code.

Get your API key
# Ask either model the same thing
curl https://fullsendai.com/v1/chat/completions \
  -H "Authorization: Bearer $FULLSEND_API_KEY" \
  -d '{"model": "deepseek-v3.1", "messages": [...]}'

# …then swap one word
  -d '{"model": "qwen3-next-80b-a3b-instruct", "messages": [...]}'

Questions

Is DeepSeek V3.1 or Qwen3 Next 80B A3B Instruct better?

DeepSeek V3.1 grades 68.7 against 62.5 for Qwen3 Next 80B A3B Instruct, from public benchmarks.

Which is cheaper, DeepSeek V3.1 or Qwen3 Next 80B A3B Instruct?

Qwen3 Next 80B A3B Instruct: $0.090 in and $1.10 out per million tokens, against $0.25 and $0.95 through FullsendAI.

Which has the larger context window?

Qwen3 Next 80B A3B Instruct, with 262,144 tokens.

Can I use both with one API key?

Yes, once they launch: both are coming soon, at the prices shown, and both will use the same FullsendAI key.

Model rankingsAll benchmarksCompare other models

Scores: LMArena (CC BY 4.0), Aider (aider.chat), SWE-bench, LiveCodeBench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.