Anthropic API Pricing (2026)

Anthropic · usage based · free tier available

Last verified 4/21/2026 · 90% confidence · Source

Claude Haiku 4.5

$1/1M input tokens/mo
$1/1M input tokens/mo (billed yearly)
  • Output cost per 1M tokens: 5 USD
  • Context window: 200000 tokens
  • Prompt caching (90% off)

Claude Sonnet 4.6

$3/1M input tokens/mo
$3/1M input tokens/mo (billed yearly)
  • Output cost per 1M tokens: 15 USD
  • Context window: 1000000 tokens
  • Batch API (50% discount)

Claude Opus 4.6

$15/1M input tokens/mo
$15/1M input tokens/mo (billed yearly)
  • Output cost per 1M tokens: 75 USD
  • Context window: 200000 tokens
  • Advanced reasoning

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Frequently Asked Questions

How much does Anthropic API cost?

Anthropic API offers 3 pricing plans including a free tier. Paid plans start at $1/1M input tokens.

Does Anthropic API have a free plan?

Yes, Anthropic API offers a free tier.

What pricing model does Anthropic API use?

Anthropic API uses usage based pricing.