Compare / Qwen3.5-122B-A10B vs Gemini 2.5 Flash Preview (09-2025)

Qwen3.5-122B-A10B vs Gemini 2.5 Flash Preview (09-2025)

Which is cheaper, which is more capable, and which does better at each kind of work, from 17 results on 3 sources that measured both models.

AlibabaQwen3.5-122B-A10B Released 24 Feb 2026 · $0.26 in · $2.08 out
GoogleGemini 2.5 Flash Preview (09-2025) Released 25 Sep 2025 · Not on sale
Qwen3.5-122B-A10B wins 115 too close to callGemini 2.5 Flash Preview (09-2025) wins 1

Of the 17 results both models have, the better value on each. Results whose reported ranges overlap are too close to call.

Results as of 13 October 2026 (catalogue release 2026-10-13-2e2420e3c5cc). See also Alibaba vs Google, every model from both labs.

Qwen3.5-122B-A10B or Gemini 2.5 Flash Preview (09-2025)? The short answer

Pick Qwen3.5-122B-A10B: it scores higher (Intelligence Index 17.7 against 15.5) at about the same price.

  • Qwen3.5-122B-A10B scores higher on the Artificial Analysis Intelligence Index: 17.7 against 15.5.
  • Qwen3.5-122B-A10B is newer: released 24 Feb 2026, against 25 Sep 2025 for Gemini 2.5 Flash Preview (09-2025).
  • On third-party benchmarks, on the results both models have: Qwen3.5-122B-A10B does better for reasoning and knowledge.

Head to head

17.7
Intelligence Index
15.5

Every fact side by side

Qwen3.5-122B-A10BGemini 2.5 Flash Preview (09-2025)
Price per million tokens$0.26 in · $2.08 outNot on sale
Blended (3 in : 1 out)$0.72–
Cheapest host, blended$0.72 (Alibaba)–
Intelligence Index17.715.5
Spring Prompt overall––
Output speed, tokens a second147–
Context window262,144 tokens–
Released24 Feb 2026 (newer)25 Sep 2025
WeightsOpenClosed
Developer based inChinathe US

Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.

Which is better for what

Each model's rank among the models on sale today, for each kind of work, from our own benchmarks and licensed sources. Further right is better; the better rank is in green.

Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls 95 of 164 not measured
Reasoning and knowledgeHard questions across science, maths and general knowledge 87 of 198 111 of 199
WritingWhat people prefer in blind comparisons, and judged writing quality 102 of 188 95 of 189
Sticking to the factsSummarising without inventing things, and factual answers 108 of 152 111 of 153

Every shared result

Each model's best result on every measure both have, grouped by benchmark, with the setting that produced it. Under each measure, every model that benchmark has measured is a grey tick, best to the right, so you can see where the two sit in the field. The headline measures of each benchmark come first; the rest are under "Show all". Green marks the better value; where a source reports ranges that overlap, neither is marked.

MeasureQwen3.5-122B-A10BGemini 2.5 Flash Preview (09-2025)
Arena (formerly LMArena) reported by Arena (formerly LMArena) · 3 results
Overall · TextArena rating, higher is better 117 · 133 of 387 measured 1,416 1,403
Overall · Text factualityArena rating, higher is better 103 · 105 of 163 measured 1,428 1,425
Business, management and finance · TextArena rating, higher is better 105 · 135 of 380 measured 1,422 1,403
Artificial Analysis reported by Artificial Analysis · 3 results
Artificial Analysis Intelligence Indexindex score, higher is better 114 · 125 of 243 measured 17.7no reasoning 15.5thinking reasoning
GPQA Diamond% of questions, higher is better 75 · 111 of 231 measured 85.7% 79.3%thinking reasoning
Humanity's Last Exam% of questions, higher is better 92 · 131 of 242 measured 25.2% 13.8%thinking reasoning
UGI Leaderboard reported by UGI Leaderboard · 3 results
Writing score · UGIscore out of 100, higher is better 112 · 89 of 230 measured 39.5no reasoning 44.9no reasoning
Requested-length error · UGI% off the requested word count, lower is better 33 · 111 of 230 measured 9.0%thinking reasoning 20.0%no reasoning
Style adherence · UGIscore from 0 to 1, higher is better 83 · 117 of 230 measured 0.36no reasoning 0.35thinking reasoning
Show all 17 results (8 more)
MeasureQwen3.5-122B-A10BGemini 2.5 Flash Preview (09-2025)
Arena (formerly LMArena) reported by Arena (formerly LMArena) · 4 results
Creative writing · TextArena rating, higher is better 136 · 120 of 385 measured 1,366 1,381
Expert prompts · TextArena rating, higher is better 111 · 123 of 338 measured 1,442 1,432
Instruction following · TextArena rating, higher is better 115 · 124 of 387 measured 1,406 1,400
Writing, literature and language · TextArena rating, higher is better 125 · 116 of 386 measured 1,387 1,394
Artificial Analysis reported by Artificial Analysis · 4 results
IFBench% of instructions, higher is better 22 · 99 of 195 measured 75.7% 52.3%thinking reasoning
Long-context reasoning (AA-LCR)% of questions, higher is better 72 · 105 of 233 measured 76.3% 71.0%thinking reasoning
Terminal-Bench Hard% of tasks, higher is better 65 · 105 of 190 measured 31.1% 16.7%thinking reasoning
τ²-bench telecom% of tasks, higher is better 30 · 108 of 193 measured 93.6% 45.6%thinking reasoning

Quick answers

Is Qwen3.5-122B-A10B better than Gemini 2.5 Flash Preview (09-2025)?

Pick Qwen3.5-122B-A10B: it scores higher (Intelligence Index 17.7 against 15.5) at about the same price.

Which is better for reasoning and knowledge, Qwen3.5-122B-A10B or Gemini 2.5 Flash Preview (09-2025)?

Qwen3.5-122B-A10B ranks 87 of 198 models on sale for hard questions across science, maths and general knowledge, against 111 for Gemini 2.5 Flash Preview (09-2025).

Which is better for writing, Qwen3.5-122B-A10B or Gemini 2.5 Flash Preview (09-2025)?

Gemini 2.5 Flash Preview (09-2025) ranks 95 of 188 models on sale for what people prefer in blind comparisons, and judged writing quality, against 102 for Qwen3.5-122B-A10B.

Which is better for sticking to the facts, Qwen3.5-122B-A10B or Gemini 2.5 Flash Preview (09-2025)?

Qwen3.5-122B-A10B ranks 108 of 152 models on sale for summarising without inventing things, and factual answers, against 111 for Gemini 2.5 Flash Preview (09-2025).

Run Qwen3.5-122B-A10B and Gemini 2.5 Flash Preview (09-2025) on your own prompt

Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.