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Gemma 4 31B IT vs Qwen3.5 397B A17B

Close to a tie overall. Gemma 4 31B IT costs 77% less for the same work, and both read a 256K-token context.

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

Qwen3.5 397B A17B

by Qwen · #35 of 67 overall

Coming soon · price at launch
Context
256K
Input / 1M
$0.45
Output / 1M
$3.00

Better overall

About even

Grade 66.5 vs 65.4

Cheaper

Gemma 4 31B IT

77% less, $0.25 vs $1.09 blended

Larger context

Same

256K 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
Gemma 4 31B ITGemma 4 31B IT: 1,452
Qwen3.5 397B A17BQwen3.5 397B A17B: 1,442
LMArena WebDevElo-style rating · LMArena (CC BY 4.0) · Oct 13, 2026
Gemma 4 31B ITGemma 4 31B IT: 1,366
Qwen3.5 397B A17BQwen3.5 397B A17B: 1,400
LMArena CodingElo-style rating · LMArena (CC BY 4.0) · Oct 15, 2026
Gemma 4 31B ITGemma 4 31B IT: 1,502
Qwen3.5 397B A17BQwen3.5 397B A17B: 1,491
SWE-bench Verified% of issues resolved · SWE-bench · Feb 16, 2026 · reference
Gemma 4 31B ITGemma 4 31B IT: —
Qwen3.5 397B A17BQwen3.5 397B A17B: 76.4%v
Terminal-Bench 2.0% of tasks passed · Terminal-Bench · Feb 16, 2026 · reference
Gemma 4 31B ITGemma 4 31B IT: —
Qwen3.5 397B A17BQwen3.5 397B A17B: 52.5%v
LiveCodeBenchpass@1, % · LiveCodeBench · Mar 11, 2026 · reference
Gemma 4 31B ITGemma 4 31B IT: 80%v
Qwen3.5 397B A17BQwen3.5 397B A17B: 83.6%v

Gemma 4 31B ITQwen3.5 397B A17Bv = 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.

Gemma 4 31B IT$56.00 /month
Qwen3.5 397B A17B$210 /month

Gemma 4 31B IT saves you $154 a month at this usage, $1,848 a year.

At a glance

AttributeGemma 4 31B ITQwen3.5 397B A17B
Made byGoogleQwen
AvailabilityComing soonComing soon
Overall gradeStrong · 66.5Strong · 65.4
Overall rank#33 of 67#35 of 67
Input price$0.20 per 1M$0.45 per 1M
Output price$0.40 per 1M$3.00 per 1M
Context window262,144 tokens262,144 tokens
Reasoning levelsNoYes
Reads imagesYesYes
Model IDgemma-4-31b-itqwen3.5-397b-a17b

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

# …then swap one word
  -d '{"model": "qwen3.5-397b-a17b", "messages": [...]}'

Questions

Is Gemma 4 31B IT or Qwen3.5 397B A17B better?

They grade within two points of each other (66.5 and 65.4), so pick on price and the benchmarks that match your work.

Which is cheaper, Gemma 4 31B IT or Qwen3.5 397B A17B?

Gemma 4 31B IT: $0.20 in and $0.40 out per million tokens, against $0.45 and $3.00 through FullsendAI.

Which has the larger context window?

Neither: both take 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), SWE-bench, Terminal-Bench, LiveCodeBench, and model makers’ published results where marked v. Prices are FullsendAI’s, per million tokens. Data as of Oct 28, 2026.