Use case

Best AI models for writing

Writing quality is harder to benchmark than coding or math. The picks here weight model size, instruction-following, and reputational signal.

Top 25 models for long-form writing

#ModelProviderContextInput price / 1MTier
1Z.ai: GLM 4.6 (exacto)Z Ai205K
Long context (128K+)
$0.44Budget
2Anthropic: Claude Fable 5Anthropic1M
Ultra context (1M+)
$10.00Premium
3Anthropic: Claude Fable 5 (batch)Anthropic1M
Ultra context (1M+)
$5.00Standard
4Anthropic: Claude Fable 5.1Anthropic1M
Ultra context (1M+)
$10.00Premium
5Anthropic: Claude Fable 5.1 (batch)Anthropic1M
Ultra context (1M+)
$5.00Standard
6Anthropic: Claude Haiku 5.5Anthropic1M
Ultra context (1M+)
$0.10Budget
7Anthropic: Claude Haiku 5.5 (batch)Anthropic1M
Ultra context (1M+)
$0.05Budget
8Anthropic: Claude Opus 4.6Anthropic1M
Ultra context (1M+)
$5.00Standard
9Anthropic: Claude Opus 4.6 (batch)Anthropic1M
Ultra context (1M+)
$2.50Standard
10Anthropic: Claude Opus 4.7Anthropic1M
Ultra context (1M+)
$5.00Standard
11Anthropic: Claude Opus 4.7 (batch)Anthropic1M
Ultra context (1M+)
$2.50Standard
12Anthropic: Claude Opus 4.7 (Fast)Anthropic1M
Ultra context (1M+)
$30.00Premium
13Anthropic: Claude Opus 4.8Anthropic1M
Ultra context (1M+)
$5.00Standard
14Anthropic: Claude Opus 4.8 (batch)Anthropic1M
Ultra context (1M+)
$2.50Standard
15Anthropic: Claude Opus 4.8 (Fast)Anthropic1M
Ultra context (1M+)
$10.00Premium
16Anthropic: Claude Opus 5Anthropic1M
Ultra context (1M+)
$5.00Standard
17Anthropic: Claude Opus 5 (batch)Anthropic1M
Ultra context (1M+)
$2.50Standard
18Anthropic: Claude Opus 5.5Anthropic1M
Ultra context (1M+)
$4.00Standard
19Anthropic: Claude Opus 5.5 (batch)Anthropic1M
Ultra context (1M+)
$2.00Standard
20Anthropic: Claude Sonnet 4.5Anthropic1M
Ultra context (1M+)
$3.00Standard
21Anthropic: Claude Sonnet 4.5 (batch)Anthropic1M
Ultra context (1M+)
$1.50Standard
22Anthropic: Claude Sonnet 4.6Anthropic1M
Ultra context (1M+)
$3.00Standard
23Anthropic: Claude Sonnet 4.6 (batch)Anthropic1M
Ultra context (1M+)
$1.50Standard
24Anthropic: Claude Sonnet 5Anthropic1M
Ultra context (1M+)
$2.00Standard
25Anthropic: Claude Sonnet 5 (batch)Anthropic1M
Ultra context (1M+)
$1.00Standard

Frequently asked questions

Which model has the best writing voice?

Subjective, but Claude (Sonnet/Opus), GPT-5, Gemini Pro, and Grok 4 are commonly cited as the most natural-sounding. Try the same prompt on each via the comparison pages.

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