Enter opens the highlighted result. Esc closes.

gpt-oss-20b vs Qwen3 Coder 480B A35B

Updated October 21, 2026. 43 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace gpt-oss-20b Replace Qwen3 Coder 480B A35B
gpt-oss-20bOpenAI
Coding
No data
Overall
10.0
Output $/M
$0.15
8
Qwen3 Coder 480B A35BQwen
Coding
No data
Overall
11.9
Output $/M
$1.50
35
vs boards won of 43 shared

Decision reading

Neither model has a coding score yet, so the two cannot be ranked on coding.

gpt-oss-20b has the edge where output tokens cost 10.0x less, and where what matters is Terminal-Bench Hard (Artificial Analysis run) or Terminal-Bench, where it leads.

Model Agpt-oss-20bOpenAINot benchmarkedNo coding benchmarkNo cost per solved taskModel BQwen3 Coder 480B A35BQwenNot benchmarked1 independent benchmarkNo cost per solved task
Shared results
43
gpt-oss-20b only
17
Qwen3 Coder 480B A35B only
9
Like-for-like categories
8 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-oss-20b not benchmarked, Qwen3 Coder 480B A35B not benchmarked.
Widest category
Math, 29.6 points apart on average over 4 shared benchmarks.
Widest single gap
AA Math Index: gpt-oss-20b 89.3 against Qwen3 Coder 480B A35B 39.3, 50.0 points apart on a 0 to 100 scale.
Output price
gpt-oss-20b $0.15 against Qwen3 Coder 480B A35B $1.50 per million output tokens, 10.0x apart.
Context window
gpt-oss-20b takes 131K tokens, Qwen3 Coder 480B A35B 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-oss-20bBarsQwen3 Coder 480B A35BTies
Coding25
Intelligence01
Agentic work10
Reasoning23
Math22
Knowledge05
Web design02
General117
All shared boards835
CodingLike-for-likeSix of these boards feed the Vibe Coding Index25
Coding benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
SWE-bench VerifiedNot measured69.6%Only Qwen3 Coder 480B A35B measured
LMArena WebDevNot measured1275Only Qwen3 Coder 480B A35B measured
LiveCodeBench (Vals AI)80.4%Not measuredOnly gpt-oss-20b measured
LiveCodeBench (Artificial Analysis run)77.7%58.5%gpt-oss-20b
SciCode38.9%Not measuredOnly gpt-oss-20b measured
Terminal-Bench Hard (Artificial Analysis run)10.6%18.9%Qwen3 Coder 480B A35B
Terminal-Bench3.4%27.2%Qwen3 Coder 480B A35B
GSO-BenchNot measured4.9%Only Qwen3 Coder 480B A35B measured
WeirdML40.9%41.2%Qwen3 Coder 480B A35B
ALE-Bench566.0461.4gpt-oss-20b
LMArena Text: coding13071412Qwen3 Coder 480B A35B
LMArena Text: software and IT13111393Qwen3 Coder 480B A35B
LMArena WebDev: ReactNot measured1257Only Qwen3 Coder 480B A35B measured
LMArena WebDev: HTMLNot measured1287Only Qwen3 Coder 480B A35B measured
Neither model has a result on the other 24 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
Intelligence benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
AA Intelligence Index10.011.9Qwen3 Coder 480B A35B
Epoch Capabilities Index137.7Not measuredOnly gpt-oss-20b measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index10
Agentic work benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
τ²-Bench Telecom60.2%43.6%gpt-oss-20b
Neither model has a result on the other 38 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index23
Reasoning benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
GPQA Diamond68.9%Not measuredOnly gpt-oss-20b measured
GPQA Diamond (Artificial Analysis run)68.8%61.8%gpt-oss-20b
Humanity's Last Exam (Artificial Analysis run)11.0%4.5%gpt-oss-20b
GPQA Diamond (Epoch AI run)60.8%Not measuredOnly gpt-oss-20b measured
LMArena Text: hard prompts12741372Qwen3 Coder 480B A35B
LMArena Text: expert12581338Qwen3 Coder 480B A35B
LMArena Text: hard prompts in English12921380Qwen3 Coder 480B A35B
Neither model has a result on the other 14 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index22
Math benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
AIME86.0%Not measuredOnly gpt-oss-20b measured
MATH 500 (Vals AI)94.2%Not measuredOnly gpt-oss-20b measured
MGSM (Vals AI)89.0%Not measuredOnly gpt-oss-20b measured
AA Math Index89.339.3gpt-oss-20b
AIME 2025 (Artificial Analysis run)89.3%39.3%gpt-oss-20b
OTIS Mock AIME65.3%Not measuredOnly gpt-oss-20b measured
LMArena Text: math13171365Qwen3 Coder 480B A35B
LMArena Text: mathematical work13051367Qwen3 Coder 480B A35B
Neither model has a result on the other 5 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index05
Knowledge benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
MMLU Pro71.6%Not measuredOnly gpt-oss-20b measured
LegalBench (Vals AI)70.8%Not measuredOnly gpt-oss-20b measured
CaseLaw (Vals AI)43.8%Not measuredOnly gpt-oss-20b measured
CorpFin (Vals AI)53.1%Not measuredOnly gpt-oss-20b measured
TaxEval (Vals AI)63.7%Not measuredOnly gpt-oss-20b measured
MedQA (Vals AI)82.9%Not measuredOnly gpt-oss-20b measured
MMLU Pro (Artificial Analysis run)74.8%78.8%Qwen3 Coder 480B A35B
LMArena Text: science12961347Qwen3 Coder 480B A35B
LMArena Text: medicine and healthcare13101347Qwen3 Coder 480B A35B
LMArena Text: legal and government12801358Qwen3 Coder 480B A35B
LMArena Text: business and finance12841343Qwen3 Coder 480B A35B
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index02
Web design benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
Design Arena: websites8531159Qwen3 Coder 480B A35B
Design Arena: UI componentsNot measured1113Only Qwen3 Coder 480B A35B measured
Design Arena: game devNot measured1099Only Qwen3 Coder 480B A35B measured
Design Arena: data viz9331084Qwen3 Coder 480B A35B
Design Arena: all code categoriesNot measured1143Only Qwen3 Coder 480B A35B measured
Neither model has a result on the other 4 boards here
GeneralLike-for-likePublic boards, shown as published, kept out of the index117
General benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
IFBench65.1%40.5%gpt-oss-20b
Long context reasoning (AA-LCR)34.7%45.7%Qwen3 Coder 480B A35B
DTBench68.0%Not measuredOnly gpt-oss-20b measured
LMCA14.5%Not measuredOnly gpt-oss-20b measured
LMArena Text12881357Qwen3 Coder 480B A35B
LMArena Text: instruction following12361355Qwen3 Coder 480B A35B
LMArena Text: creative writing12011333Qwen3 Coder 480B A35B
LMArena Text: English13031359Qwen3 Coder 480B A35B
LMArena Text: non-English12691346Qwen3 Coder 480B A35B
LMArena Text: Chinese13151357Qwen3 Coder 480B A35B
LMArena Text: German12551325Qwen3 Coder 480B A35B
LMArena Text: Japanese12441311Qwen3 Coder 480B A35B
LMArena Text: Korean12361305Qwen3 Coder 480B A35B
LMArena Text: FrenchNot measured1398Only Qwen3 Coder 480B A35B measured
LMArena Text: Spanish12671360Qwen3 Coder 480B A35B
LMArena Text: Russian12781366Qwen3 Coder 480B A35B
LMArena Text: Polish12521344Qwen3 Coder 480B A35B
LMArena Text: multi-turn12681366Qwen3 Coder 480B A35B
LMArena Text: longer queries12501378Qwen3 Coder 480B A35B
LMArena Text: writing and language12381340Qwen3 Coder 480B A35B
LMArena Text: entertainment and media12161317Qwen3 Coder 480B A35B
Neither model has a result on the other 25 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for gpt-oss-20b and Qwen3 Coder 480B A35B
Benchmarkgpt-oss-20bQwen3 Coder 480B A35BLeader
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-oss-20b$0.0001Fits in one request
Qwen3 Coder 480B A35B$0.0010Fits in one request

gpt-oss-20b costs less

Repository review

50K input + 3K output tokens

gpt-oss-20b$0.0019Fits in one request
Qwen3 Coder 480B A35B$0.019Fits in one request

gpt-oss-20b costs less

Agent loop

200K input + 10K output tokens

gpt-oss-20b$0.0075Exceeds the context window
Qwen3 Coder 480B A35B$0.075Fits in one request

gpt-oss-20b 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-oss-20b and Qwen3 Coder 480B A35B
SpecificationOpenAI gpt-oss-20bQwen3 Coder 480B A35B
MakerOpenAIQwen
WeightsOpen weightsOpen weights
ReleasedAugust 5, 2025July 23, 2025
Context window131K262K
Input $/Mtok$0.03$0.30
Output $/Mtok$0.15$1.50
Coding indexNot benchmarkedNot benchmarked
Independent measurements behind it01
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is gpt-oss-20b better than Qwen3 Coder 480B A35B for coding?

Neither model has a coding score yet, so the two cannot be ranked on coding. gpt-oss-20b has the edge where output tokens cost 10.0x less, and where what matters is Terminal-Bench Hard (Artificial Analysis run) or Terminal-Bench, where it leads.

Which is cheaper, gpt-oss-20b or Qwen3 Coder 480B A35B?

gpt-oss-20b costs $0.03 per million input tokens and $0.15 per million output tokens; Qwen3 Coder 480B A35B costs $0.30 and $1.50. Cost per solved task is known for neither of them.

Which has the bigger context window, gpt-oss-20b or Qwen3 Coder 480B A35B?

Qwen3 Coder 480B A35B, with 262K tokens against 131K.

How many benchmarks is the gpt-oss-20b vs Qwen3 Coder 480B A35B comparison based on?

43 benchmarks have a result for both models as of October 21, 2026. gpt-oss-20b's coding index rests on 0 independent benchmarks and Qwen3 Coder 480B A35B's on 1. Where only one model has a result, the page says so instead of naming a winner.

Compare next