Compare / Qwen3.5 397B A17B vs o3
Qwen3.5 397B A17B vs o3
Which is cheaper, which is more capable, and which does better at each kind of work, from 19 results on 3 sources that measured both models.
Qwen3.5 397B A17B or o3? The short answer
- Qwen3.5 397B A17B is cheaper: $1.29 against $3.50 per million tokens, 2.7 times less.
- Qwen3.5 397B A17B scores higher on the Artificial Analysis Intelligence Index: 21.4 against 20.2.
- o3 writes faster: 126 tokens a second against 90.
- On our business benchmarks, Qwen3.5 397B A17B ranks higher for reasoning and knowledge and sticking to the facts.
- On our business benchmarks, o3 ranks higher for agents and tool use and writing.
At a glance
| Qwen3.5 397B A17B | o3 | |
|---|---|---|
| Price per million tokens | $0.55 in · $3.50 out | $2.00 in · $8.00 out |
| Blended (3 in : 1 out) | $1.29 | $3.50 |
| Cheapest host, blended | $0.88 (Alibaba) | – |
| Intelligence Index | 21.4 | 20.2 |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | 90 | 126 |
| Context window | 262,144 tokens | 200,000 tokens |
| Weights | Open | Closed |
| Developer based in | China | the 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 models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Qwen3.5 397B A17B | o3 |
|---|---|---|
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 65 of 161 | 13 of 161 |
| Professional workReal tasks from banking, consulting and law, business documents and freelance projects | 48 of 51 | not measured |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 69 of 195 | 95 of 195 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | 66 of 187 | 49 of 187 |
| Sticking to the factsSummarising without inventing things, and factual answers | 72 of 153 | 91 of 153 |
Every shared result
| Benchmark | Metric | Qwen3.5 397B A17B | o3 |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,445 | 1,405 |
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,445 | 1,426 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,405 | 1,383 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,476 | 1,449 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,434 | 1,403 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,442 | 1,432 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,421 | 1,396 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 21.4 | 20.2 |
| Artificial Analysisreported | GPQA Diamond% of questions | 89.3% | 82.7% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 29.0% | 20.1% |
| Artificial Analysisreported | IFBench% of instructions | 78.8% | 71.4% |
| Artificial Analysisreported | Long-context reasoning (AA-LCR)% of questions | 77.3% | 74.7% |
| Artificial Analysisreported | Output speedtokens per second | 89.7 | 126 |
| Artificial Analysisreported | Terminal-Bench Hard% of tasks | 40.9% | 37.1% |
| Artificial Analysisreported | Time to first answer tokenseconds | 1.57 | 3.96 |
| Artificial Analysisreported | Τ²-bench telecom% of tasks | 95.6% | 80.7% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 23.0% | 18.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.33 | 0.30 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 50.1 | 66.8 |
Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.
Quick answers
Is Qwen3.5 397B A17B better than o3?
It depends on the task. Among models available today, on our benchmarks and licensed sources, Qwen3.5 397B A17B ranks higher for reasoning and knowledge and sticking to the facts; o3 ranks higher for agents and tool use and writing.
Which is cheaper, Qwen3.5 397B A17B or o3?
Qwen3.5 397B A17B costs $1.29 per million tokens (three input to one output), against $3.50 for o3.
Which is faster, Qwen3.5 397B A17B or o3?
o3 writes about 126 tokens a second on its usual API, against 90 for Qwen3.5 397B A17B (Artificial Analysis).
Run Qwen3.5 397B A17B and o3 on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.