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Put models side by side on price, context, capabilities, and benchmarks.
Claude Haiku 5.5 is Anthropic's small, fast model, released October 7, 2026 as the successor to Haiku 4.5 at $0.10/$0.50 per million input/output tokens for prompts up to 100K tokens, roughly 75% cheaper on average, with configurable effort levels. It is built for high-volume work such as summarization, subagents, database queries, classification, and browser use.
GPT-6 Luna is the fast, low-cost tier of OpenAI's GPT-6 series (1.05M-token context, text, image, and file input, $0.10/$0.50 per million input/output tokens), released September 22, 2026 below GPT-6 Sol and the flagship GPT-6 Astra. It is built for high-volume tasks with a clear goal, such as summarization, extraction, classification, quick questions, and lightweight agentic steps.
