Qwen3.5-122B-A10B vs Qwen3.5-27B
Updated October 21, 2026. 48 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
Decision reading
Qwen3.5-122B-A10B and Qwen3.5-27B are level for coding, 22.9 against 22.6 on the Vibe Coding Index, so price and context decide.
Pick Qwen3.5-27B when what matters is Terminal-Bench Hard (Artificial Analysis run) or LMArena WebDev: HTML, where it leads. Pick Qwen3.5-122B-A10B when output tokens cost 1.0x less, or when what matters is LMArena WebDev or LMArena Text: coding, where it leads.
- Shared results
- 48
- Qwen3.5-122B-A10B only
- 3
- Qwen3.5-27B only
- 5
- 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.
Coding
Vibe Coding Index, four public coding benchmarks
No call
Level: 22.9 against 22.6, inside 2 points.
One benchmark behind each score
Intelligence
AA Intelligence Index
Qwen3.5-27B
Qwen3.5-27B leads, 22.9 against 17.7.
Same board, both measured
Long documents
Listed context window
No call
Both take 262K tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Qwen3.5-122B-A10B
Qwen3.5-122B-A10B $0.0013, Qwen3.5-27B $0.0014 per turn.
List prices
At a glance
- Coding index
- Qwen3.5-122B-A10B 22.9 from 1 benchmark, Qwen3.5-27B 22.6 from 1 benchmark.
- Widest category
- Intelligence, 5.2 points apart on average over 1 shared benchmark.
- Widest single gap
- LMArena WebDev: HTML: Qwen3.5-122B-A10B 1351 against Qwen3.5-27B 1386, 5.7 points apart on a 0 to 100 scale.
- Output price
- Qwen3.5-122B-A10B $2.08 against Qwen3.5-27B $2.16 per million output tokens, 1.0x apart.
- Context window
- Both take 262K tokens.
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.
| Category | Qwen3.5-122B-A10B | Bars | Qwen3.5-27B | Ties |
|---|---|---|---|---|
| Coding | 4 | 2 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 6 | 1 | ||
| Math | 2 | 0 | ||
| Knowledge | 2 | 2 | ||
| General | 21 | 6 | ||
| All shared boards | 35 | 13 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index42
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| LMArena WebDev | 1361 | 1358 | Qwen3.5-122B-A10B |
| AA Coding Index | 43.3 | Not measured | Only Qwen3.5-122B-A10B measured |
| SciCode | 39.7% | Not measured | Only Qwen3.5-122B-A10B measured |
| Terminal-Bench Hard (Artificial Analysis run) | 31.1% | 32.6% | Qwen3.5-27B |
| WeirdML | Not measured | 39.5% | Only Qwen3.5-27B measured |
| ALE-Bench | Not measured | 349.4 | Only Qwen3.5-27B measured |
| LMArena Text: coding | 1436 | 1427 | Qwen3.5-122B-A10B |
| LMArena Text: software and IT | 1436 | 1431 | Qwen3.5-122B-A10B |
| LMArena WebDev: React | 1353 | 1346 | Qwen3.5-122B-A10B |
| LMArena WebDev: HTML | 1351 | 1386 | Qwen3.5-27B |
| Neither model has a result on the other 28 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| AA Intelligence Index | 17.7 | 22.9 | Qwen3.5-27B |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| τ²-Bench Telecom | 93.6% | 93.9% | Qwen3.5-27B |
| Vending-Bench 2 | Not measured | $202 | Only Qwen3.5-27B measured |
| Neither model has a result on the other 37 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index61
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| GPQA Diamond (Artificial Analysis run) | 85.7% | 85.8% | Qwen3.5-27B |
| Humanity's Last Exam (Artificial Analysis run) | 25.2% | 23.9% | Qwen3.5-122B-A10B |
| Mystery game puzzles | 17.0% | Not measured | Only Qwen3.5-122B-A10B measured |
| LMArena Text: hard prompts | 1421 | 1415 | Qwen3.5-122B-A10B |
| LMArena Text: expert | 1431 | 1427 | Qwen3.5-122B-A10B |
| LMArena Text: hard prompts in English | 1431 | 1429 | Qwen3.5-122B-A10B |
| LMArena Vision: diagrams | 1249 | 1249 | Qwen3.5-122B-A10B |
| LMArena Vision: homework | 1261 | 1256 | Qwen3.5-122B-A10B |
| Neither model has a result on the other 13 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| LMArena Text: math | 1431 | 1429 | Qwen3.5-122B-A10B |
| LMArena Text: mathematical work | 1431 | 1429 | Qwen3.5-122B-A10B |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index22
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| LMArena Text: science | 1432 | 1437 | Qwen3.5-27B |
| LMArena Text: medicine and healthcare | 1423 | 1425 | Qwen3.5-27B |
| LMArena Text: legal and government | 1422 | 1405 | Qwen3.5-122B-A10B |
| LMArena Text: business and finance | 1414 | 1399 | Qwen3.5-122B-A10B |
| Neither model has a result on the other 13 boards here | |||
Web designNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| Neither model has a result on 9 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index216
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| IFBench | 75.7% | 75.6% | Qwen3.5-122B-A10B |
| Long context reasoning (AA-LCR) | 76.3% | 77.7% | Qwen3.5-27B |
| DTBench | 84.3% | 82.4% | Qwen3.5-122B-A10B |
| LMCA | 32.2% | 34.0% | Qwen3.5-27B |
| LMArena Text | 1417 | 1409 | Qwen3.5-122B-A10B |
| LMArena Text: instruction following | 1399 | 1393 | Qwen3.5-122B-A10B |
| LMArena Text: creative writing | 1368 | 1362 | Qwen3.5-122B-A10B |
| LMArena Vision | 1244 | 1241 | Qwen3.5-122B-A10B |
| LMArena Text: English | 1428 | 1425 | Qwen3.5-122B-A10B |
| LMArena Text: non-English | 1401 | 1390 | Qwen3.5-122B-A10B |
| LMArena Text: Chinese | 1463 | 1478 | Qwen3.5-27B |
| LMArena Text: German | 1425 | 1392 | Qwen3.5-122B-A10B |
| LMArena Text: Japanese | 1367 | 1346 | Qwen3.5-122B-A10B |
| LMArena Text: Korean | 1353 | 1359 | Qwen3.5-27B |
| LMArena Text: French | 1443 | 1410 | Qwen3.5-122B-A10B |
| LMArena Text: Spanish | 1425 | 1407 | Qwen3.5-122B-A10B |
| LMArena Text: Russian | 1400 | 1390 | Qwen3.5-122B-A10B |
| LMArena Text: Polish | 1398 | 1375 | Qwen3.5-122B-A10B |
| LMArena Text: multi-turn | 1416 | 1410 | Qwen3.5-122B-A10B |
| LMArena Text: longer queries | 1410 | 1413 | Qwen3.5-27B |
| LMArena Text: writing and language | 1387 | 1380 | Qwen3.5-122B-A10B |
| LMArena Text: entertainment and media | 1366 | 1363 | Qwen3.5-122B-A10B |
| LMArena Vision: English | 1249 | 1246 | Qwen3.5-122B-A10B |
| LMArena Vision: Chinese | 1301 | 1301 | Qwen3.5-122B-A10B |
| LMArena Vision: reading text | 1251 | 1246 | Qwen3.5-122B-A10B |
| LMArena Vision: humor | 1243 | 1227 | Qwen3.5-122B-A10B |
| LMArena Vision: captioning | Not measured | 1170 | Only Qwen3.5-27B measured |
| LMArena Vision: recognizing things | Not measured | 1210 | Only Qwen3.5-27B measured |
| LMArena Vision: creative writing | 1220 | 1224 | Qwen3.5-27B |
| Neither model has a result on the other 17 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Qwen3.5-122B-A10B | Qwen3.5-27B | Leader |
|---|---|---|---|
| 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
Qwen3.5-122B-A10B costs less
Repository review
50K input + 3K output tokens
Qwen3.5-122B-A10B costs less
Agent loop
200K input + 10K output tokens
Qwen3.5-122B-A10B 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.
| Specification | Qwen3.5-122B-A10B | Qwen3.5-27B |
|---|---|---|
| Maker | Qwen | Qwen |
| Weights | Open weights | Open weights |
| Released | February 25, 2026 | February 25, 2026 |
| Context window | 262K | 262K |
| Input $/Mtok | $0.26 | $0.27 |
| Output $/Mtok | $2.08 | $2.16 |
| Coding index | 22.9 | 22.6 |
| Independent measurements behind it | 1 | 1 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Qwen3.5-122B-A10B better than Qwen3.5-27B for coding?
Qwen3.5-122B-A10B and Qwen3.5-27B are level for coding, 22.9 against 22.6 on the Vibe Coding Index, so price and context decide. Pick Qwen3.5-27B when what matters is Terminal-Bench Hard (Artificial Analysis run) or LMArena WebDev: HTML, where it leads. Pick Qwen3.5-122B-A10B when output tokens cost 1.0x less, or when what matters is LMArena WebDev or LMArena Text: coding, where it leads.
Which is cheaper, Qwen3.5-122B-A10B or Qwen3.5-27B?
Qwen3.5-122B-A10B costs $0.26 per million input tokens and $2.08 per million output tokens; Qwen3.5-27B costs $0.27 and $2.16. Cost per solved task is known for neither of them.
Which has the bigger context window, Qwen3.5-122B-A10B or Qwen3.5-27B?
Neither: both take 262K tokens.
How many benchmarks is the Qwen3.5-122B-A10B vs Qwen3.5-27B comparison based on?
48 benchmarks have a result for both models as of October 21, 2026. Qwen3.5-122B-A10B's coding index rests on 1 independent benchmark and Qwen3.5-27B's on 1. Where only one model has a result, the page says so instead of naming a winner.