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GPT-5.4 Mini vs Qwen3.5-35B-A3B

Updated October 21, 2026. 44 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace GPT-5.4 Mini Replace Qwen3.5-35B-A3B
GPT-5.4 MiniOpenAI
Coding
28.2
Overall
24.1
Output $/M
$4.50
40
Qwen3.5-35B-A3BQwen
Coding
7.7
Overall
19.3
Output $/M
$1.00
3
vs boards won of 44 shared, 1 tied

Decision reading

Pick GPT-5.4 Mini for coding: it scores 28.2 on the Vibe Coding Index against 7.7 for Qwen3.5-35B-A3B.

Pick Qwen3.5-35B-A3B when output tokens cost 4.5x less, or when what matters is τ²-Bench Telecom or LMArena Text: medicine and healthcare, where it leads.

Model AGPT-5.4 MiniOpenAI28.2/1001 independent benchmark$0.70 per solved taskModel BQwen3.5-35B-A3BQwen7.7/1001 independent benchmarkNo cost per solved task
Shared results
44
GPT-5.4 Mini only
44
Qwen3.5-35B-A3B only
1
Like-for-like categories
7 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
GPT-5.4 Mini 28.2 from 1 benchmark, Qwen3.5-35B-A3B 7.7 from 1 benchmark.
Widest category
Coding, 18.7 points apart on average over 7 shared benchmarks.
Widest single gap
ALE-Bench: GPT-5.4 Mini 1188.6 against Qwen3.5-35B-A3B 221.8, 32.2 points apart on a 0 to 100 scale.
Output price
GPT-5.4 Mini $4.50 against Qwen3.5-35B-A3B $1.00 per million output tokens, 4.5x apart.
Context window
GPT-5.4 Mini takes 400K tokens, Qwen3.5-35B-A3B 262K.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGPT-5.4 MiniBarsQwen3.5-35B-A3BTies
Coding70
Intelligence20
Agentic work01
Reasoning60
Math30
Knowledge31
General1911 tie
All shared boards4031 tie
CodingLike-for-likeFour of these boards feed the Vibe Coding Index70
Coding benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
LMArena WebDev13971254GPT-5.4 Mini
AA Coding Index56.1Not measuredOnly GPT-5.4 Mini measured
LiveCodeBench (Vals AI)81.5%Not measuredOnly GPT-5.4 Mini measured
SWE-bench Verified (Vals AI)73.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 4 (Vals AI)2.5%Not measuredOnly GPT-5.4 Mini measured
Vibe Code Bench (Vals AI)48.0%Not measuredOnly GPT-5.4 Mini measured
Code migration (Vals AI)12.9%Not measuredOnly GPT-5.4 Mini measured
ProgramBench (Vals AI)0.0%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench 2.1 (Vals AI)54.7%Not measuredOnly GPT-5.4 Mini measured
SciCode52.1%Not measuredOnly GPT-5.4 Mini measured
Terminal-Bench Hard (Artificial Analysis run)52.3%26.5%GPT-5.4 Mini
FrontierCode27.0%Not measuredOnly GPT-5.4 Mini measured
WeirdML60.3%Not measuredOnly GPT-5.4 Mini measured
ALE-Bench1188.6221.8GPT-5.4 Mini
LMArena Text: coding14381410GPT-5.4 Mini
LMArena Text: software and IT14361415GPT-5.4 Mini
LMArena WebDev: React13861238GPT-5.4 Mini
LMArena WebDev: HTML14191301GPT-5.4 Mini
Neither model has a result on the other 20 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
AA Intelligence Index24.119.3GPT-5.4 Mini
Epoch Capabilities Index148.7142.5GPT-5.4 Mini
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
Agentic work benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
AA Agentic Index17.9Not measuredOnly GPT-5.4 Mini measured
Finance Agent (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
Tax Agent Bench (Vals AI)8.8%Not measuredOnly GPT-5.4 Mini measured
Legal Research Bench (Vals AI)12.5%Not measuredOnly GPT-5.4 Mini measured
Excel Modeling Benchmark (Vals AI)45.4%Not measuredOnly GPT-5.4 Mini measured
τ²-Bench Telecom83.3%89.2%Qwen3.5-35B-A3B
DeepResearch Bench36.3%Not measuredOnly GPT-5.4 Mini measured
Vending-Bench 2Not measured$463Only Qwen3.5-35B-A3B measured
Neither model has a result on the other 31 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index60
Reasoning benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
GPQA Diamond83.1%Not measuredOnly GPT-5.4 Mini measured
MMMU Pro (Vals AI)79.3%Not measuredOnly GPT-5.4 Mini measured
GPQA Diamond (Artificial Analysis run)87.5%84.5%GPT-5.4 Mini
Humanity's Last Exam (Artificial Analysis run)28.1%21.0%GPT-5.4 Mini
GPQA Diamond (Epoch AI run)86.9%83.5%GPT-5.4 Mini
ARC-AGI63.7%Not measuredOnly GPT-5.4 Mini measured
ARC-AGI-218.9%Not measuredOnly GPT-5.4 Mini measured
Chess puzzles23.0%Not measuredOnly GPT-5.4 Mini measured
Mystery game puzzles11.0%Not measuredOnly GPT-5.4 Mini measured
LMArena Text: hard prompts14241400GPT-5.4 Mini
LMArena Text: expert14351408GPT-5.4 Mini
LMArena Text: hard prompts in English14201411GPT-5.4 Mini
LMArena Vision: diagrams1266Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: homework1285Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 7 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
AIME95.6%Not measuredOnly GPT-5.4 Mini measured
OTIS Mock AIME88.9%70.0%GPT-5.4 Mini
FrontierMath, tiers 1 to 351.2%Not measuredOnly GPT-5.4 Mini measured
FrontierMath, tier 49.8%Not measuredOnly GPT-5.4 Mini measured
ProofBench21.0%Not measuredOnly GPT-5.4 Mini measured
LMArena Text: math14181404GPT-5.4 Mini
LMArena Text: mathematical work14291410GPT-5.4 Mini
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index31
Knowledge benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
MMLU Pro84.5%Not measuredOnly GPT-5.4 Mini measured
CaseLaw (Vals AI)51.7%Not measuredOnly GPT-5.4 Mini measured
CorpFin (Vals AI)60.9%Not measuredOnly GPT-5.4 Mini measured
TaxEval (Vals AI)71.2%Not measuredOnly GPT-5.4 Mini measured
MortgageTax (Vals AI)63.5%Not measuredOnly GPT-5.4 Mini measured
SimpleQA Verified29.4%Not measuredOnly GPT-5.4 Mini measured
LMArena Text: science14171413GPT-5.4 Mini
LMArena Text: medicine and healthcare13951421Qwen3.5-35B-A3B
LMArena Text: legal and government14141399GPT-5.4 Mini
LMArena Text: business and finance14181394GPT-5.4 Mini
Neither model has a result on the other 7 boards here
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Web design benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
Neither model has a result on 9 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index191
General benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
SAGE (Vals AI)50.8%Not measuredOnly GPT-5.4 Mini measured
Vals Multimodal Index54.2%Not measuredOnly GPT-5.4 Mini measured
IFBench73.3%72.5%GPT-5.4 Mini
Long context reasoning (AA-LCR)77.0%72.0%GPT-5.4 Mini
DTBench80.0%80.0%Tie
LMCA40.8%29.5%GPT-5.4 Mini
LMArena Text14121395GPT-5.4 Mini
LMArena Text: instruction following14051379GPT-5.4 Mini
LMArena Text: creative writing13701347GPT-5.4 Mini
LMArena Vision1245Not measuredOnly GPT-5.4 Mini measured
LMArena Text: English14121407GPT-5.4 Mini
LMArena Text: non-English14051378GPT-5.4 Mini
LMArena Text: Chinese14461457Qwen3.5-35B-A3B
LMArena Text: German14081367GPT-5.4 Mini
LMArena Text: Japanese13751326GPT-5.4 Mini
LMArena Text: Korean13701355GPT-5.4 Mini
LMArena Text: French14411412GPT-5.4 Mini
LMArena Text: Spanish14051390GPT-5.4 Mini
LMArena Text: Russian14171376GPT-5.4 Mini
LMArena Text: Polish14151385GPT-5.4 Mini
LMArena Text: multi-turn14291390GPT-5.4 Mini
LMArena Text: longer queries14081389GPT-5.4 Mini
LMArena Text: writing and language13931365GPT-5.4 Mini
LMArena Text: entertainment and media13731347GPT-5.4 Mini
LMArena Vision: English1244Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: Chinese1286Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: reading text1253Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: humor1235Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: recognizing things1218Not measuredOnly GPT-5.4 Mini measured
LMArena Vision: creative writing1222Not measuredOnly GPT-5.4 Mini measured
Neither model has a result on the other 16 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.4 Mini and Qwen3.5-35B-A3B
BenchmarkGPT-5.4 MiniQwen3.5-35B-A3BLeader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

GPT-5.4 Mini$0.0030Fits in one request
Qwen3.5-35B-A3B$0.0006Fits in one request

Qwen3.5-35B-A3B costs less

Repository review

50K input + 3K output tokens

GPT-5.4 Mini$0.051Fits in one request
Qwen3.5-35B-A3B$0.010Fits in one request

Qwen3.5-35B-A3B costs less

Agent loop

200K input + 10K output tokens

GPT-5.4 Mini$0.195Fits in one request
Qwen3.5-35B-A3B$0.038Fits in one request

Qwen3.5-35B-A3B costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of GPT-5.4 Mini and Qwen3.5-35B-A3B
SpecificationOpenAI GPT-5.4 MiniQwen3.5-35B-A3B
MakerOpenAIQwen
WeightsNo public weights listedOpen weights
ReleasedMarch 17, 2026February 25, 2026
Context window400K262K
Input $/Mtok$0.75$0.14
Output $/Mtok$4.50$1.00
Coding index28.27.7
Independent measurements behind it11
Cost per solved task$0.70Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.4 Mini better than Qwen3.5-35B-A3B for coding?

Pick GPT-5.4 Mini for coding: it scores 28.2 on the Vibe Coding Index against 7.7 for Qwen3.5-35B-A3B. Pick Qwen3.5-35B-A3B when output tokens cost 4.5x less, or when what matters is τ²-Bench Telecom or LMArena Text: medicine and healthcare, where it leads.

Which is cheaper, GPT-5.4 Mini or Qwen3.5-35B-A3B?

GPT-5.4 Mini costs $0.75 per million input tokens and $4.50 per million output tokens; Qwen3.5-35B-A3B costs $0.14 and $1.00. Cost per solved task is known for GPT-5.4 Mini only.

Which has the bigger context window, GPT-5.4 Mini or Qwen3.5-35B-A3B?

GPT-5.4 Mini, with 400K tokens against 262K.

How many benchmarks is the GPT-5.4 Mini vs Qwen3.5-35B-A3B comparison based on?

44 benchmarks have a result for both models as of October 21, 2026. GPT-5.4 Mini's coding index rests on 1 independent benchmark and Qwen3.5-35B-A3B's on 1. Where only one model has a result, the page says so instead of naming a winner.

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