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GPT-5.6 Terra vs Qwen3.6 Plus

GPT-5.6 Terra leads Qwen3.6 Plus on coding, 63.9 to 44.1 on the Vibe Coding Index, and Qwen3.6 Plus costs 6.2x less per output token ($1.95 vs $12.00 per million). Updated October 22, 2026; 80 benchmarks have a result for both.

Replace GPT-5.6 Terra Replace Qwen3.6 Plus
GPT-5.6 TerraOpenAI
Coding
63.9
Overall
68.1
Output $/M
$12.00
72
Qwen3.6 PlusQwen
Coding
44.1
Overall
56.2
Output $/M
$1.95
8
vs boards won of 80 shared

GPT-5.6 Terra or Qwen3.6 Plus: which to pick

Pick GPT-5.6 Terra for coding: it scores 63.9 on the Vibe Coding Index against 44.1 for Qwen3.6 Plus.

Pick Qwen3.6 Plus for output tokens 6.2x cheaper ($1.95 vs $12.00 per million) and work measured by LiveCodeBench (Vals AI) or τ²-Bench Telecom, where it leads.

Model AGPT-5.6 TerraOpenAI63.9/1006 independent benchmarks$0.42 per solved taskModel BQwen3.6 PlusQwen44.1/1003 independent benchmarks$1.19 per solved task
Shared results
80
GPT-5.6 Terra only
47
Qwen3.6 Plus only
3
Like-for-like categories
8 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

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-5.6 Terra 63.9 from 6 benchmarks, Qwen3.6 Plus 44.1 from 3 benchmarks.
Widest category
Agentic work, 20.2 points apart on average over 6 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): GPT-5.6 Terra 74.6% against Qwen3.6 Plus 25.6%, 49.0 points apart on a 0 to 100 scale.
Output price
GPT-5.6 Terra $12.00 against Qwen3.6 Plus $1.95 per million output tokens, 6.2x apart.
Context window
GPT-5.6 Terra takes 1.05M tokens, Qwen3.6 Plus 1M.

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-5.6 TerraBarsQwen3.6 PlusTies
Coding141
Intelligence20
Agentic work51
Reasoning100
Math40
Knowledge74
Web design71
General231
All shared boards728
CodingLike-for-likeSix of these boards feed the Vibe Coding Index141
Coding benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
LiveBench coding86.2%Not measuredOnly GPT-5.6 Terra measured
LMArena WebDev15221461GPT-5.6 Terra
AA Coding Index76.754.5GPT-5.6 Terra
LiveCodeBench (Vals AI)85.9%86.0%Qwen3.6 Plus
SWE-bench Verified (Vals AI)95.4%73.4%GPT-5.6 Terra
Terminal-Bench 4 (Vals AI)22.7%Not measuredOnly GPT-5.6 Terra measured
Vibe Code Bench (Vals AI)74.6%25.6%GPT-5.6 Terra
Code migration (Vals AI)47.8%11.1%GPT-5.6 Terra
ProgramBench (Vals AI)0.5%0.0%GPT-5.6 Terra
IOI (Vals AI)87.6%Not measuredOnly GPT-5.6 Terra measured
Terminal-Bench 2.1 (Vals AI)77.5%53.2%GPT-5.6 Terra
Vibe Code Bench 1-100 (Vals AI)14.8%Not measuredOnly GPT-5.6 Terra measured
SkillsBench (Vals AI)58.9%Not measuredOnly GPT-5.6 Terra measured
CyberBench (Vals AI)72.1%Not measuredOnly GPT-5.6 Terra measured
SciCode55.0%Not measuredOnly GPT-5.6 Terra measured
Terminal-Bench Hard (Artificial Analysis run)62.9%43.9%GPT-5.6 Terra
FrontierCode41.3%Not measuredOnly GPT-5.6 Terra measured
WeirdML78.3%Not measuredOnly GPT-5.6 Terra measured
ALE-Bench1951.4670.1GPT-5.6 Terra
LMArena Text: coding14851467GPT-5.6 Terra
LMArena Text: software and IT14821462GPT-5.6 Terra
LMArena WebDev: React15131454GPT-5.6 Terra
LMArena WebDev: HTML15261463GPT-5.6 Terra
LMArena WebDev: from an image15411472GPT-5.6 Terra
SciCode10.8%Not measuredOnly GPT-5.6 Terra measured
Neither model has a result on the other 14 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
AA Intelligence Index42.127.0GPT-5.6 Terra
Epoch Capabilities Index160.1147.3GPT-5.6 Terra
Agentic workLike-for-likePublic boards, shown as published, kept out of the index51
Agentic work benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
AA Agentic Index43.2Not measuredOnly GPT-5.6 Terra measured
Design Arena: agents building web apps1120Not measuredOnly GPT-5.6 Terra measured
Design Arena: agents building full-stack apps1061Not measuredOnly GPT-5.6 Terra measured
Design Arena: agents building mobile apps1111Not measuredOnly GPT-5.6 Terra measured
Design Arena: agents building Android apps1062Not measuredOnly GPT-5.6 Terra measured
Design Arena: agents building games1083Not measuredOnly GPT-5.6 Terra measured
Design Arena: HTML slides1058Not measuredOnly GPT-5.6 Terra measured
Design Arena: PowerPoint slides1105Not measuredOnly GPT-5.6 Terra measured
LiveBench research60.4%Not measuredOnly GPT-5.6 Terra measured
LiveBench browser84.0%Not measuredOnly GPT-5.6 Terra measured
LiveBench long agentic48.4%Not measuredOnly GPT-5.6 Terra measured
SREBench (Vals AI)9.5%Not measuredOnly GPT-5.6 Terra measured
Finance Agent (Vals AI)54.4%40.9%GPT-5.6 Terra
Tax Agent Bench (Vals AI)30.0%7.7%GPT-5.6 Terra
Legal Research Bench (Vals AI)41.4%14.9%GPT-5.6 Terra
Excel Modeling Benchmark (Vals AI)66.2%32.9%GPT-5.6 Terra
Terminal-Bench-Science (Vals AI)10.0%Not measuredOnly GPT-5.6 Terra measured
τ²-Bench Telecom86.3%97.7%Qwen3.6 Plus
APEX-Agents58.2%Not measuredOnly GPT-5.6 Terra measured
BALROG53.2%Not measuredOnly GPT-5.6 Terra measured
Vending-Bench 2$7,343$5,115GPT-5.6 Terra
Neither model has a result on the other 20 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index100
Reasoning benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
GPQA Diamond90.9%87.4%GPT-5.6 Terra
LiveBench reasoning90.6%Not measuredOnly GPT-5.6 Terra measured
MMMU Pro (Vals AI)86.5%84.2%GPT-5.6 Terra
GPQA Diamond (Artificial Analysis run)92.5%88.2%GPT-5.6 Terra
Humanity's Last Exam (Artificial Analysis run)42.9%27.8%GPT-5.6 Terra
GPQA Diamond (Epoch AI run)93.3%88.4%GPT-5.6 Terra
ARC-AGI96.5%Not measuredOnly GPT-5.6 Terra measured
ARC-AGI-283.9%Not measuredOnly GPT-5.6 Terra measured
SimpleBench48.9%Not measuredOnly GPT-5.6 Terra measured
Chess puzzles47.0%14.0%GPT-5.6 Terra
Mystery game puzzles35.0%12.0%GPT-5.6 Terra
LMArena Text: hard prompts14691448GPT-5.6 Terra
LMArena Text: expert14961454GPT-5.6 Terra
LMArena Text: hard prompts in English14651455GPT-5.6 Terra
LMArena Vision: diagrams1295Not measuredOnly GPT-5.6 Terra measured
LMArena Vision: homework1312Not measuredOnly GPT-5.6 Terra measured
Kagi LLM Benchmark51.3%Not measuredOnly GPT-5.6 Terra measured
Neither model has a result on the other 5 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index40
Math benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
AIMENot measured94.6%Only Qwen3.6 Plus measured
OTIS Mock AIME99.7%93.3%GPT-5.6 Terra
FrontierMath, tiers 1 to 386.0%38.2%GPT-5.6 Terra
FrontierMath, tier 470.7%Not measuredOnly GPT-5.6 Terra measured
ProofBench74.0%Not measuredOnly GPT-5.6 Terra measured
LMArena Text: math14651449GPT-5.6 Terra
LMArena Text: mathematical work14781448GPT-5.6 Terra
Neither model has a result on the other 6 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index74
Knowledge benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
MMLU Pro86.7%87.7%Qwen3.6 Plus
LegalBench (Vals AI)85.1%84.2%GPT-5.6 Terra
CaseLaw (Vals AI)Not measured51.5%Only Qwen3.6 Plus measured
CorpFin (Vals AI)65.3%61.9%GPT-5.6 Terra
TaxEval (Vals AI)76.2%74.7%GPT-5.6 Terra
MortgageTax (Vals AI)67.3%68.0%Qwen3.6 Plus
MedCode (Vals AI)43.4%36.9%GPT-5.6 Terra
SimpleQA Verified43.2%44.1%Qwen3.6 Plus
LMArena Text: science14521439GPT-5.6 Terra
LMArena Text: medicine and healthcare14301442Qwen3.6 Plus
LMArena Text: legal and government14611437GPT-5.6 Terra
LMArena Text: business and finance14481430GPT-5.6 Terra
FACTS Benchmark Suite52.0%Not measuredOnly GPT-5.6 Terra measured
Neither model has a result on the other 5 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index71
Web design benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
Design Arena: websites12681243GPT-5.6 Terra
Design Arena: UI components12561230GPT-5.6 Terra
Design Arena: game dev12291211GPT-5.6 Terra
Design Arena: data viz12401228GPT-5.6 Terra
Design Arena: 3D11341202Qwen3.6 Plus
Design Arena: all code categories12411236GPT-5.6 Terra
Design Arena: SVG12191161GPT-5.6 Terra
Design Arena: ASCII art11771113GPT-5.6 Terra
LiveBench design76.0%Not measuredOnly GPT-5.6 Terra measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index231
General benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
LiveBench data analysis79.3%Not measuredOnly GPT-5.6 Terra measured
Public Benefits Bench (Vals AI)62.4%Not measuredOnly GPT-5.6 Terra measured
SAGE (Vals AI)47.0%44.9%GPT-5.6 Terra
MedScribe (Vals AI)82.9%77.0%GPT-5.6 Terra
Vals Multimodal Index65.1%51.5%GPT-5.6 Terra
IFBench71.2%75.2%Qwen3.6 Plus
Long context reasoning (AA-LCR)83.0%78.3%GPT-5.6 Terra
DTBench93.3%81.9%GPT-5.6 Terra
LMCA54.9%33.1%GPT-5.6 Terra
CL-benchNot measured20.3%Only Qwen3.6 Plus measured
Surface Evolver Bench83.8%Not measuredOnly GPT-5.6 Terra measured
Furniture assembly54.2%Not measuredOnly GPT-5.6 Terra measured
LMArena Text14481436GPT-5.6 Terra
LMArena Text: instruction following14561424GPT-5.6 Terra
LMArena Text: creative writing14131404GPT-5.6 Terra
LMArena Vision1271Not measuredOnly GPT-5.6 Terra measured
LMArena Text: English14491445GPT-5.6 Terra
LMArena Text: non-English14411424GPT-5.6 Terra
LMArena Text: Chinese15141477GPT-5.6 Terra
LMArena Text: German14601451GPT-5.6 Terra
LMArena Text: Japanese14541390GPT-5.6 Terra
LMArena Text: Korean14271379GPT-5.6 Terra
LMArena Text: French14661455GPT-5.6 Terra
LMArena Text: Spanish14511432GPT-5.6 Terra
LMArena Text: Russian14521434GPT-5.6 Terra
LMArena Text: Polish14461433GPT-5.6 Terra
LMArena Text: multi-turn14531438GPT-5.6 Terra
LMArena Text: longer queries14541439GPT-5.6 Terra
LMArena Text: writing and language14311418GPT-5.6 Terra
LMArena Text: entertainment and media14181402GPT-5.6 Terra
LMArena Vision: English1272Not measuredOnly GPT-5.6 Terra measured
LMArena Vision: Chinese1337Not measuredOnly GPT-5.6 Terra measured
LMArena Vision: reading text1278Not measuredOnly GPT-5.6 Terra measured
LMArena Vision: humor1236Not measuredOnly GPT-5.6 Terra measured
LMArena Vision: creative writing1248Not measuredOnly GPT-5.6 Terra measured
LMArena Document1472Not measuredOnly GPT-5.6 Terra measured
Neither model has a result on the other 10 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for GPT-5.6 Terra and Qwen3.6 Plus
BenchmarkGPT-5.6 TerraQwen3.6 PlusLeader
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-5.6 Terra$0.0080Fits in one request
Qwen3.6 Plus$0.0013Fits in one request

Qwen3.6 Plus costs less

Repository review

50K input + 3K output tokens

GPT-5.6 Terra$0.136Fits in one request
Qwen3.6 Plus$0.022Fits in one request

Qwen3.6 Plus costs less

Agent loop

200K input + 10K output tokens

GPT-5.6 Terra$0.520Fits in one request
Qwen3.6 Plus$0.085Fits in one request

Qwen3.6 Plus 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-5.6 Terra and Qwen3.6 Plus
SpecificationOpenAI GPT-5.6 TerraQwen3.6 Plus
MakerOpenAIQwen
WeightsNo public weights listedNo public weights listed
ReleasedJuly 9, 2026April 2, 2026
Context window1.05M1M
Input $/Mtok$2.00$0.325
Output $/Mtok$12.00$1.95
Coding index63.944.1
Independent measurements behind it63
Cost per solved task$0.42$1.19
SourceOpenRouter listingOpenRouter listing

Questions

Is GPT-5.6 Terra better than Qwen3.6 Plus for coding?

Pick GPT-5.6 Terra for coding: it scores 63.9 on the Vibe Coding Index against 44.1 for Qwen3.6 Plus. Pick Qwen3.6 Plus for output tokens 6.2x cheaper ($1.95 vs $12.00 per million) and work measured by LiveCodeBench (Vals AI) or τ²-Bench Telecom, where it leads.

Which is cheaper, GPT-5.6 Terra or Qwen3.6 Plus?

GPT-5.6 Terra costs $2.00 per million input tokens and $12.00 per million output tokens; Qwen3.6 Plus costs $0.325 and $1.95. Per solved SWE-bench Verified task, GPT-5.6 Terra costs $0.42 and Qwen3.6 Plus $1.19.

Which has the bigger context window, GPT-5.6 Terra or Qwen3.6 Plus?

GPT-5.6 Terra, with 1.05M tokens against 1M.

How many benchmarks is the GPT-5.6 Terra vs Qwen3.6 Plus comparison based on?

80 benchmarks have a result for both models as of October 22, 2026. GPT-5.6 Terra's coding index rests on 6 independent benchmarks and Qwen3.6 Plus's on 3. Where only one model has a result, the page says so instead of naming a winner.

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