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Batch-processing variant of Claude Haiku 4.5, Anthropic's fast and affordable Claude 4 small model. Same capabilities as the standard model, offered at lower cost via asynchronous batch processing.
Document analysis#37Software & IT Services#104Mathematical#104Writing, Literature, & Language#113
AuthorAnthropic
Country🇺🇸 United States
ReleasedOct 15, 2025
Overview
Cost rate
0.5x
Context
200K
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.50
Cached input$0.05
Output$2.50
Context
Context length200,000
Max output tokens64,000
Knowledge cutoff-
Performance
Throughput-
Latency-
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
AuthorOpenAI
Country🇺🇸 United States
ReleasedSep 22, 2026
Overview
Cost rate
0.1x
Context
1.1M
Input
Output
Reasoning
Tool calling
Structured outputs
Pricing/M tokens
Input$0.10
Cached input$0.01
Output$0.50
Context
Context length1,050,000
Max output tokens128,000
Knowledge cutoff-
Performance
Throughput143 tok/s
Latency5.28s
Benchmarks
Head-to-head scores across reasoning, coding, and agentic indices, plus per-domain rankings.
Intelligence
57.6
Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback)
Claude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback)53.4Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)
Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)52.7
