Near top-tier quality at about half the price of the top Claude model. Our editorial pick; we have not run writing tests.
Made by Anthropic, the company behind Claude. Smartness: ★★★★★ (5 of 5) Reads at once: about 1,500 pages 1,000-word essay: $0.01 (about 1 cent) 50-page PDF summary: $0.07 (about 7 cents)
One of the cheapest models we track with a smartness rating of 4 out of 5, so fine for routine drafting.
Made by Anthropic, the company behind Claude. Smartness: ★★★★☆ (4 of 5) Reads at once: about 1,500 pages 1,000-word essay: under 1 cent 50-page PDF summary: under 1 cent
Chat, web search, file creation, memory and the Sonnet and Haiku models. Usage limits reset every 5 hours.
Limited; 'there's no fixed message count' (Anthropic). Up to 5 projects. Checked 2026-10-16; free plans can change. See every app's free plan.
What a 100-message chat costs with each pick
The best pick costs $2.62; the budget pick costs $0.13 (about 13 cents). These are developer prices, so they show relative cost, not your monthly bill.
Bar scale
Claude Haiku 5.5 (budget pick)$0.13
Claude Sonnet 5.5 (best pick)$2.62
Show the data as a table
Model
Cost of a 100-message chat
Claude Haiku 5.5 (budget pick)
$0.13 (about 13 cents)
Claude Sonnet 5.5 (best pick)
$2.62
Bars use a straight scale: a bar twice as long means twice the cost. Only the two picks above. Source: OpenRouter list prices and the assumptions on How we work.