Claude Haiku 5.5 is Anthropic's fastest and most efficient model in the Claude 5.5 family, offering a 1M-token context window, strong coding and reasoning capabilities, and lower costs for high-volume AI applications.

Pricing: Input 12 credits / 1M tokens (≈ $0.06), Output 60 credits / 1M tokens (≈ $0.30). High-tier top-ups include +10% bonus credits. Effective pricing is approximately 10% lower than the above rates.
claude-haiku-5-5

Automatically append previous messages to maintain multi-turn context. May increase token usage.

Function calling
Max tokens
Stream Response

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Complete guide to using claude-haiku-5-5

Claude Haiku 5.5 API for Efficient AI Agents at Lower Cost on Kie AI

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Fast Claude Haiku 5.5 API for Low-Latency Applications
Affordable Claude Haiku 5.5 API for Cost-Efficient AI Applications
Claude Haiku 5.5 with a 1M Token Context Window
Claude Haiku 5.5 Adaptive Thinking for Efficient Reasoning
Claude Haiku 5.5 API for AI Agents and Coding Workflows
Claude Haiku 5.5 Multimodal API for Text and Image Inputs
Claude Haiku 5.5 Benchmark Results vs Haiku 4.5, GPT-6 Luna, and Sonnet 5.5
FeatureClaude Haiku 4.5Claude Haiku 5.5Claude Sonnet 5.5Claude Opus 5.5
Model PositioningLightweightAdvanced LightweightBalanced PerformanceFlagship Intelligence
Context Window200K1M1M1M
API CostLowVery LowMediumHigh
Response SpeedFastVery FastFastTask-Dependent
ReasoningModerateImprovedAdvancedMost Advanced
Coding & AgentsBasic TasksEfficient WorkflowsComplex WorkflowsAdvanced Multi-Step Tasks
Best ForSimple AutomationHigh-Volume AI AppsCoding & AI AgentsComplex Reasoning
Claude Haiku 5.5 vs GPT-6 Luna: Performance and Capabilities
Compare Claude Haiku 5.5 and GPT-6 Luna API Costs on Kie AI