Compare / Qwen2.5 72B Instruct vs Claude Fable 5.1
Qwen2.5 72B Instruct vs Claude Fable 5.1
Which is cheaper, which is more capable, and which does better at each kind of work, from 12 results on 3 sources that measured both models.
Qwen2.5 72B Instruct or Claude Fable 5.1? The short answer
- Qwen2.5 72B Instruct is cheaper: $0.37 against $20.00 per million tokens, 54 times less.
- Claude Fable 5.1 scores higher on the Artificial Analysis Intelligence Index: 53.4 against 7.7.
- On our business benchmarks, Claude Fable 5.1 ranks higher for reasoning and knowledge and writing.
At a glance
| Qwen2.5 72B Instruct | Claude Fable 5.1 | |
|---|---|---|
| Price per million tokens | $0.36 in · $0.40 out | $10.00 in · $50.00 out |
| Blended (3 in : 1 out) | $0.37 | $20.00 |
| Cheapest host, blended | $0.37 (DeepInfra, FP8) | $20.00 (Azure) |
| Intelligence Index | 7.7 | 53.4 |
| Spring Prompt overall | – | 65 |
| Output speed, tokens a second | – | 71 |
| Context window | 32,768 tokens | 1,000,000 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 | Qwen2.5 72B Instruct | Claude Fable 5.1 |
|---|---|---|
| Product listingsTurning a sparse product feed and photos into listings that can go live | not measured | 14 of 19 |
| Decks from an analysisTurning a finished analysis into a deck you could present as it is | not measured | 6 of 18 |
| Marketing planningPlanning a year of ad spend without overspending | not measured | 6 of 18 |
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | not measured | 14 of 161 |
| Professional workReal tasks from banking, consulting and law, business documents and freelance projects | not measured | 4 of 51 |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | 175 of 195 | 4 of 195 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | 159 of 187 | 15 of 187 |
| Sticking to the factsSummarising without inventing things, and factual answers | not measured | 4 of 153 |
| Speed under pressureGood decisions against a real clock (fast chess) | not measured | 22 of 22 |
Every shared result
| Benchmark | Metric | Qwen2.5 72B Instruct | Claude Fable 5.1 |
|---|---|---|---|
| Arena (formerly LMArena)reported | Business, management and financeArena rating | 1,299 | 1,485 |
| Arena (formerly LMArena)reported | Creative writingArena rating | 1,254 | 1,484 |
| Arena (formerly LMArena)reported | Expert promptsArena rating | 1,295 | 1,516 |
| Arena (formerly LMArena)reported | Instruction followingArena rating | 1,292 | 1,497 |
| Arena (formerly LMArena)reported | OverallArena rating | 1,303 | 1,501 |
| Arena (formerly LMArena)reported | Writing, literature and languageArena rating | 1,282 | 1,496 |
| Artificial Analysisreported | Artificial Analysis Intelligence Indexindex score | 7.70 | 53.4 |
| Artificial Analysisreported | GPQA Diamond% of questions | 49.1% | 93.7% |
| Artificial Analysisreported | Humanity's Last Exam% of questions | 3.6% | 59.1% |
| UGI Leaderboardreported | Requested-length error% off the requested word count | 21.0% | 3.0% |
| UGI Leaderboardreported | Style adherencescore from 0 to 1 | 0.36 | 0.43 |
| UGI Leaderboardreported | Writing scorescore out of 100 | 31.5 | 63.9 |
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 Qwen2.5 72B Instruct better than Claude Fable 5.1?
It depends on the task. Among models available today, on our benchmarks and licensed sources, Claude Fable 5.1 ranks higher for reasoning and knowledge and writing.
Which is cheaper, Qwen2.5 72B Instruct or Claude Fable 5.1?
Qwen2.5 72B Instruct costs $0.37 per million tokens (three input to one output), against $20.00 for Claude Fable 5.1.
Run Qwen2.5 72B Instruct and Claude Fable 5.1 on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.