Source

Claude documentation

2 items

Anthropic's developer documentation for Claude. The pricing page carries the multipliers most people never read: cache writes, batch, data residency, fast mode.

docs.claude.com ↗

The words Claude Haiku 5.5 in black serif type on an off-white background, between three torn paper fragments in yellow, beige, and blue, with a thin black arc running beneath the name.

Models

Claude Haiku 5.5 cuts Anthropic's small-model price by 90% for prompts under 100,000 tokens

Anthropic released Claude Haiku 5.5 on October 7, 2026. For prompts up to 100,000 tokens it costs $0.10 per million input tokens and $0.50 per million output tokens, a tenth of what Haiku 4.5 charges; above that line the prices are $0.50 and $2.50. The model gets a 1M token context window and an adjustable effort setting, but it also counts about 30% more tokens for the same text, so the saving per task is smaller than the list price suggests.

AnthropicOctober 8verified

Models

Anthropic releases Claude Sonnet 5.5, with input and output tokens at half the Opus 5.5 price

Claude Sonnet 5.5 keeps Sonnet 5's prices: $2 per million input tokens and $10 per million output tokens. That is half of what Opus 5.5 charges, while Anthropic's own benchmarks put the two models within a few points of each other. Code that turns thinking off needs a change before the switch, because the old setting now returns an error.

AnthropicSeptember 28verified