{"slug": "openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens", "title": "OpenAI cuts GPT-5.6 Luna price 80% to $0.20 per million input tokens", "summary": "OpenAI has cut the price of its GPT-5.6 Luna model by 80% to $0.20 per million input tokens and $1.20 per million output tokens, making it cheaper than Anthropic's Claude Haiku 4.5 for input. The price reduction is partly attributed to GPT-5.6 Sol autonomously optimizing serving kernels, cutting end-to-end serving costs by 20%, according to Simon Willison.", "body_md": "[Simon Willison](https://simonwillison.net/2026/Jul/30/luna-price-drop/#atom-everything)\n\n### OpenAI cuts GPT-5.6 Luna price 80% to $0.20 per million input tokens\n\nWhich summary reads better? Pick one — models revealed after.Both summaries are AI-generated.\n\nGPT-5.6 Luna dropped 80% to $0.20 per million input tokens and $1.20 per million output tokens, making it cheap enough to replace budget models in production agent workloads. The notable operational signal is that OpenAI attributes part of this to GPT-5.6 Sol autonomously optimizing serving kernels and cutting end-to-end serving costs by 20%, so model-assisted inference optimization is now directly translating into lower API prices.\n\nGPT-5.6 Luna now costs $0.20 per million input tokens and $1.20 per million output tokens, an 80% drop that makes it 1/5th the price of Anthropic's Claude Haiku 4.5 for input, enabling cost-effective deployment of language models for production workloads, including agent-based applications.", "url": "https://wpnews.pro/news/openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens", "canonical_source": "https://www.snipvote.com/story/cms8mbrhr000anup2yyecrgyj", "published_at": "2026-07-31 07:53:20.722713+00:00", "updated_at": "2026-07-31 07:53:22.418416+00:00", "lang": "en", "topics": ["large-language-models", "ai-products", "ai-infrastructure"], "entities": ["OpenAI", "GPT-5.6 Luna", "GPT-5.6 Sol", "Anthropic", "Claude Haiku 4.5", "Simon Willison"], "alternates": {"html": "https://wpnews.pro/news/openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens", "markdown": "https://wpnews.pro/news/openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens.md", "text": "https://wpnews.pro/news/openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens.txt", "jsonld": "https://wpnews.pro/news/openai-cuts-gpt-5-6-luna-price-80-to-0-20-per-million-input-tokens.jsonld"}}