Best LLM for Content Writing
For blog posts, marketing copy and general writing, most modern models are fluent enough that readers can't tell which one wrote the draft. That makes writing a value play, not a quality play.
Best value pick
Qwen3.5 Flash
Alibaba · Overall Arena 1398 · about $18.70/month at 100,000 calls. The top-ranked Claude Opus 5 costs $2,000.00/month — you save $1,981.30/month with Qwen3.5 Flash.
| 1 | Qwen3.5 Flash | 1398 | $18.70 | Alibaba |
| 2 | GLM-5.3-Flash | 1472 | $23.75 | Z.ai (Zhipu AI) |
| 3 | Qwen3.8 27B | 1439 | $29.50 | Alibaba |
| 4 | Step 3.5 Flash | 1404 | $30.00 | StepFun |
| 5 | MiMo-V2.5 | 1427 | $35.00 | Xiaomi |
| 6 | MiMo-V2-Flash | 1394 | $35.00 | Xiaomi |
| 7 | MiMo-V2-Omni | 1422 | $35.00 | Xiaomi |
| 8 | DeepSeek V4 Flash | 1424 | $52.50 | DeepSeek |
| 9 | DeepSeek V3.2 | 1420 | $63.00 | DeepSeek |
| 10 | DeepSeek V3.1 | 1417 | $64.00 | DeepSeek |
| 11 | Hunyuan Hy3 | 1441 | $70.00 | Tencent |
| 12 | DeepSeek V3.1 Terminus | 1417 | $72.50 | DeepSeek |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 18 September 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Why picking isn’t obvious
Since fluency is broadly solved, the deciding factors are cost and, for long pieces, output token price. We rank on the overall Arena with a moderate bar and surface the cheapest model that still writes well.
FAQ
What is the best value LLM for writing?
Qwen3.5 Flash is the cheapest model that still clears our quality bar for this task, at about $18.70/month for 100,000 calls (1,500 in / 500 out). It scores 1398 on the Overall Arena.
Is the most expensive model worth it for this?
Claude Opus 5 tops the Overall Arena but costs about $2,000.00/month here — roughly $1,981.30/month more than Qwen3.5 Flash for 107 extra Arena points. For most workloads that gap is not worth the premium.
Cite / link to this page
You’re welcome to reference this page and its figures with attribution and a link back.
https://aicalculatorpro.com/best-llm-for/content-writing/<a href="https://aicalculatorpro.com/best-llm-for/content-writing/">Best LLM for Content Writing — AI Calculator Pro</a>