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LLM API pricing

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Standard-tier list prices for 18 models from Anthropic, OpenAI, Google, as of Nov 09, 2026. For 1,000 chatbot replies (2K tokens in, 500 out each) the cheapest is GPT-5 nano at $0.30 and the most expensive GPT-6 Astra at $45.00. Pick a model for its workload costs and nearest alternatives.

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How much does each model cost per 1M tokens?

USD per 1M tokens, cheapest first by the cost of 1,000 chatbot replies
ModelInputOutputCached input1,000 chatbot replies
GPT-5 nanoOpenAI$0.05$0.40$0.005$0.30
Claude Haiku 5.5Anthropic$0.10$0.50—$0.45
GPT-6 LunaOpenAI$0.10$0.50$0.01$0.45
GPT-4o miniOpenAI$0.15$0.60$0.075$0.60
Gemini 3.1 Flash-LiteGoogle$0.25$1.50—$1.25
GPT-5 miniOpenAI$0.25$2.00$0.025$1.50
Gemini 3.5 Flash-LiteGoogle$0.30$2.50—$1.85
Claude Haiku 4.5Anthropic$1.00$5.00—$4.50
GPT-6.1 TerraOpenAI$1.00$5.00$0.05$4.50
Gemini 3.8 FlashGoogle · intro $0.75 / $3.75 until Dec 31, 2026$1.50$7.50—$6.75
Claude Sonnet 5.5Anthropic$2.00$10.00$0.20$9.00
GPT-6.1 SolOpenAI$2.00$10.00$0.10$9.00
Gemini 3.1 Pro (preview)Google$2.00$12.00—$10.00
Claude Opus 5.5Anthropic$4.00$20.00$0.20$18.00
Gemini 4 ArgonGoogle · intro $2.00 / $10.00 until Nov 30, 2026$4.00$20.00—$18.00
GPT-5.5OpenAI$5.00$30.00$0.50$25.00
Claude Fable 5.1Anthropic$10.00$50.00$0.25$45.00
GPT-6 AstraOpenAI$10.00$50.00$1.00$45.00

Standard-tier list prices from the Anthropic, OpenAI and Google pricing pages, last checked Nov 09, 2026. Long-context rates and batch discounts are on each model's page; introductory rates are not used in the ordering.

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