AI Writing Cost per Article Calculator 2026
AI Writing Cost per Article
Adjust settings below to estimate your API cost in real time
Input: $0.8/MTok · Output: $4/MTok
Number of API calls per article
Prompt overhead (+20%)
Adds 20% extra input tokens for system prompt, instructions, and formatting directives.
Cost per article
$0.0097
Claude Haiku 4.5 · 1,500 words · 1 draft
Per 10 articles
$0.10
Per 100 articles
$0.97
Token breakdown (per draft)
Input tokens
2,340
incl. 20% overhead
Output tokens
1,950
article body
All 12 models compared -- cheapest to most expensive
Prices per million tokens as of June 2026. Verify at provider pricing page before use -- rates change frequently.
Quick Answer
How much does it cost to write an article with AI?
A 1,500-word article costs $0.0002 to $0.15 depending on the model. Gemini 2.5 Flash-Lite is cheapest at under $0.001 per article. GPT-4.1 mini and Claude Haiku 4.5 are the best mid-range options. Claude Opus 4 and GPT-4o are premium choices for high-quality output. All prices as of June 2026.
About this tool
This calculator estimates the exact API cost to write one article using any major AI model. Enter your target word count, select a model, set the number of draft iterations, and toggle whether your workflow uses a system prompt. The calculator applies the industry-standard 1.3 tokens-per-word ratio and shows your cost per article, per 10 articles, and per 100 articles in real time.
Use it to compare models before committing to a content production workflow. A 1,500-word article can cost anywhere from $0.0002 with Gemini 2.5 Flash-Lite to over $0.15 with Claude Opus 4. The right model depends on your quality requirements, budget, and volume. This tool makes that tradeoff visible before you write a single line of code. Verify at provider pricing page before use -- rates change frequently.
How it works
AI writing cost breakdown by word count
Cost per article, 1 draft, prompt overhead on. Top 5 most affordable models as of June 2026.
| Model | 500 words | 1,000 words | 1,500 words | 2,000 words | 3,000 words |
|---|---|---|---|---|---|
| Gemini 2.5 Flash-Lite | $0.0003 | $0.0005 | $0.0008 | $0.0010 | $0.0015 |
| GPT-4.1 nano | $0.0003 | $0.0007 | $0.0010 | $0.0014 | $0.0020 |
| GPT-4o mini | $0.0005 | $0.0010 | $0.0015 | $0.0020 | $0.0030 |
| DeepSeek V3 | $0.0009 | $0.0019 | $0.0028 | $0.0037 | $0.0056 |
| GPT-4.1 mini | $0.0014 | $0.0027 | $0.0041 | $0.0054 | $0.0081 |
Based on published API pricing June 2026. Gemini 2.5 Flash has the same price as GPT-4o mini ($0.15 input / $0.60 output per MTok).
When to use premium vs budget models
Budget models
Gemini 2.5 Flash-Lite, GPT-4.1 nano, GPT-4o mini, Gemini 2.5 Flash
- ✓High-volume blog production (1,000+ articles per month)
- ✓First drafts and ideation passes
- ✓Product descriptions and e-commerce category pages
- ✓Social media captions and short-form content
- ✓A/B test variants where volume matters more than polish
Premium models
Claude Opus 4, GPT-4o, Claude Sonnet 4, Gemini 2.5 Pro
- ✓Thought leadership and executive ghostwriting
- ✓Technical documentation and whitepapers
- ✓High-intent SEO pages where quality is a ranking factor
- ✓Legal or compliance-sensitive writing
- ✓Content that will be published without human editorial review
Frequently asked questions about AI writing costs
How much does it cost to write an article with AI?+
A 1,500-word article costs between $0.0002 (Gemini 2.5 Flash-Lite) and $0.15 (Claude Opus 4) depending on the model. Most teams use mid-tier models like GPT-4.1 mini or Gemini 2.5 Flash, which cost under $0.001 per article.
Which AI model is cheapest for writing articles?+
Gemini 2.5 Flash-Lite at $0.075 per million input tokens and $0.30 per million output tokens is the cheapest model for article writing as of June 2026. DeepSeek V3 at $0.27/$1.10 and GPT-4.1 nano at $0.10/$0.40 are also very affordable options.
How many tokens does a 1,500-word article use?+
A 1,500-word article uses approximately 1,950 output tokens (at 1.3 tokens per word). With a system prompt overhead of 20%, total input tokens are roughly 2,340. Total token usage is around 4,290 tokens per article.
Is it cheaper to use the API or a subscription like ChatGPT Plus?+
For high-volume content, the API is almost always cheaper. ChatGPT Plus costs $20 per month for limited usage. At API rates, $20 buys over 10,000 articles with GPT-4.1 mini or over 1,000,000 articles with Gemini 2.5 Flash-Lite.
What is prompt overhead and why does it matter?+
Prompt overhead is the extra tokens used by your system prompt, instructions, and formatting directives sent before the article request. A typical system prompt adds 300 to 500 tokens, which this calculator estimates as 20 percent of article tokens. For short articles, overhead can double your effective cost per word.
How do I reduce AI writing costs without losing quality?+
Use prompt caching for repeated instructions (saves 90 percent on cached tokens with Claude), choose Flash or mini models for drafts and upgrade to Pro or Sonnet only for final edits, use the Batch API for 50 percent off when timing is flexible, and process multiple articles per API call using structured output.
Does this calculator include image generation costs?+
No. This calculator covers only text generation via LLM APIs. Image generation (DALL-E 3, Midjourney, Stable Diffusion) is priced separately and not included in these estimates.
How accurate are these cost estimates?+
Estimates are based on published API pricing as of June 2026 and a standard 1.3 tokens-per-word ratio. Actual costs vary by model version, prompt complexity, and provider pricing changes. Always verify current rates at the provider pricing page before budgeting.