Claude Haiku 5.5

At a glance

What it costs

You pay for the tokens each reply actually uses, at Anthropic’s price plus the 25% platform fee. Before you send, the composer shows an estimate, and every reply shows what it cost.

Usage comes out of the credit included with your plan, then any top-up. See plans and every model’s price.

The model you pick is the model that answers

Every reply is labeled with the model that actually wrote it. If Claude Haiku 5.5 can’t answer and Knecty uses another model, the reply says so.

Read more: The "Served by" guarantee · Models available in your region · Help centre · Pricing

• Claude Sonnet 5New-generation balanced flagshipPremiumExtended thinking$2.50 in · $12.50 out per 1M tokens
• Claude Opus 5Anthropic’s premium pick — deep reasoningPremiumExtended thinking$6.25 in · $31.25 out per 1M tokens
• Claude Haiku 4.5Quick and capable — great for draftsPremium$1.25 in · $6.25 out per 1M tokens
• Claude Fable 5Previous Fable — always-on deep thinkingPremiumExtended thinking$12.50 in · $62.50 out per 1M tokens
• Claude Fable 5.1Anthropic’s most capable — always-on deep thinkingPremiumExtended thinking$12.50 in · $62.50 out per 1M tokens
• Claude Opus 4.8Previous Opus — deep reasoningPremiumExtended thinking$6.25 in · $31.25 out per 1M tokens
• Claude Opus 4.6Earlier Opus of the 4.x linePremiumExtended thinking$6.25 in · $31.25 out per 1M tokens
• Claude Opus 5.5Premium$5.00 in · $25.00 out per 1M tokens
• Claude Sonnet 5.5Premium$2.50 in · $12.50 out per 1M tokens
• Claude Sonnet 4.6Previous Sonnet — balanced for hard tasksPremiumExtended thinking$3.75 in · $18.75 out per 1M tokens