Skip to content

DeepSeek V3.1 vs Gemma 4 31B IT

DeepSeek V3.1 grades higher overall (68.7 against 66.5). Gemma 4 31B IT costs 41% 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

Gemma 4 31B IT

by Google · #33 of 67 overall

Coming soon · price at launch
Context
256K
Input / 1M
$0.20
Output / 1M
$0.40

Better overall

DeepSeek V3.1

Grade 68.7 vs 66.5

Cheaper

Gemma 4 31B IT

41% less, $0.25 vs $0.42 blended

Larger context

Gemma 4 31B IT

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
LMArena WebDevElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
DeepSeek V3.1DeepSeek V3.1: —
Gemma 4 31B ITGemma 4 31B IT: 1,366
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Aider Polyglot% of exercises solved · Aider (aider.chat) · Aug 21, 2025
Gemma 4 31B ITGemma 4 31B IT: —
SWE-bench Verified% of issues resolved · SWE-bench · Aug 21, 2025 · reference
DeepSeek V3.1DeepSeek V3.1: 66%v
Gemma 4 31B ITGemma 4 31B IT: —
LiveCodeBenchpass@1, % · LiveCodeBench · Mar 11, 2026 · reference

DeepSeek V3.1Gemma 4 31B ITv = 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
Gemma 4 31B IT$56.00 /month

Gemma 4 31B IT saves you $32.00 a month at this usage, $384 a year.

At a glance

AttributeDeepSeek V3.1Gemma 4 31B IT
Made byDeepSeekGoogle
AvailabilityComing soonComing soon
Overall gradeStrong · 68.7Strong · 66.5
Overall rank#31 of 67#33 of 67
Input price$0.25 per 1M$0.20 per 1M
Output price$0.95 per 1M$0.40 per 1M
Context window163,840 tokens262,144 tokens
Reasoning levelsYesNo
Reads imagesNoYes
Model IDdeepseek-v3.1gemma-4-31b-it

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": "gemma-4-31b-it", "messages": [...]}'

Questions

Is DeepSeek V3.1 or Gemma 4 31B IT better?

DeepSeek V3.1 grades 68.7 against 66.5 for Gemma 4 31B IT, from public benchmarks.

Which is cheaper, DeepSeek V3.1 or Gemma 4 31B IT?

Gemma 4 31B IT: $0.20 in and $0.40 out per million tokens, against $0.25 and $0.95 through FullsendAI.

Which has the larger context window?

Gemma 4 31B IT, 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.