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Tool profile

Claude

Claude is a family of large language models built by Anthropic, a safety-focused AI company founded in 2021. It handles text generation, analysis, coding, summarization, Q&A, and extended reasoning tasks. Claude is notably able to process very long documents in a single conversation thanks to its large context window.

Made byAnthropic
Launched2023
CategoryAI Chatbot / Large Language Model
Best forProfessionals who need a reliable AI for reading and summarizing long documents, writing and editing, coding assistance, and nuanced reasoning — especially where tone control and instruction-following matter. Also well-suited for developers building apps via the API who want a capable model with strong safety characteristics.
PricingFree tier available; Claude Pro costs $20/month; API pricing is usage-based per token, ranging from roughly $0.25 to $75 per million tokens depending on the model.

Models and pricing

Claude (Free tier — claude.ai)$0/month

Casual use, light writing help, quick Q&A

Access is throttled and you get bumped to slower or smaller models during peak times. Fine for occasional use but not reliable for daily heavy work.

Claude Pro$20/month

Power users who need priority access, higher usage limits, and access to the latest models

Gets you 5x more usage than free, priority access during high-traffic periods, and early access to new features. Worth it if you use Claude daily or for serious work.

Claude Haiku 3.5 (API)Approximately $0.80 per million input tokens / $4 per million output tokens — roughly $0.003 per 1,000 words of output

High-volume, low-latency tasks like classification, tagging, customer support routing

Fastest and cheapest in the current lineup. Pick this when speed and cost matter more than raw capability.

Claude Sonnet 3.5 (API)Approximately $3 per million input tokens / $15 per million output tokens — roughly $0.02 per 1,000 words of output

The everyday workhorse — coding, writing, analysis, agentic tasks

Anthropic's recommended default for most developers. Strong balance of intelligence and cost. This is the model behind Claude.ai Pro most of the time.

Claude Opus 3 (API)Approximately $15 per million input tokens / $75 per million output tokens — roughly $0.10 per 1,000 words of output

Complex reasoning, nuanced writing, difficult multi-step tasks

The most capable but also the most expensive model Anthropic currently offers publicly. As of mid-2025, Opus 3 is aging and Anthropic has not yet released Opus 4 publicly — verify current availability before committing to it for production use.

Which model should you use?

Most people should start with Claude Sonnet 3.5 via the API or just subscribe to Claude Pro for $20/month — it covers 90% of real-world use cases at a reasonable price. Only reach for Opus if you have genuinely complex reasoning tasks and can justify the cost, and only use Haiku when you are optimizing for speed or budget at scale.

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