Need an AI writing partner? We test GPT-5.2 and Claude Sonnet 4.5 on prose quality, creative range, tone control, long-form structure, and revision accuracy to find the better writer.
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Task-specific scoring for writing workloads across 5 dimensions.
| Dimension | GPT-5.2 | Claude Sonnet 4.5 | Edge |
|---|---|---|---|
| Prose Quality | Natural, varied sentence rhythm with a conversational tone. Rarely sounds robotic and adapts register well. | Polished and precise with strong paragraph transitions. Can lean formal unless prompted otherwise. | |
| Tone Consistency | Generally maintains tone but can drift in very long pieces, especially when switching between narrative and analytical sections. | Excellent tone lock across 10,000+ word pieces. Follows style guides and brand voice instructions reliably. | |
| Long-form Structure | Produces well-organized articles with clear sections, though transitions can feel mechanical in 3,000+ word pieces. | Stronger at building narrative arcs and maintaining coherent arguments across very long documents. | |
| Creativity | More willing to take creative risks with metaphors, humor, and unconventional structures. Better for fiction and marketing copy. | Creative but tends toward measured, elegant prose. Excels at nuanced character work and layered arguments. | |
| Editing & Revision | Good at rephrasing and shortening but sometimes loses the author's original voice during heavy edits. | Preserves the original voice more faithfully during edits and provides more actionable revision suggestions. |
Pick GPT-5.2 for marketing copy, social media content, creative fiction, and any writing where a natural, conversational tone matters more than rigid structure.
Pick Claude Sonnet 4.5 for long-form articles, technical writing, brand-voice content, and professional documents where tone consistency and careful editing are critical.
This is the closest matchup of the six tasks. Claude Sonnet 4.5 wins on tone consistency, structure, and editing, making it the better choice for professional and long-form content. GPT-5.2's creative flair and natural voice give it the edge for marketing copy, fiction, and short-form content.
Use LLMWise Compare mode to test GPT-5.2 vs Claude Sonnet 4.5 on your own writing prompts.
You only pay credits per request. No monthly subscription. Paid credits never expire.
Replace multiple AI subscriptions with one wallet that includes routing, failover, and optimization.