Claude Sonnet 4.5 pricing & price history
Claude Sonnet 4.5 by Anthropic costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with a 1M token context window.
Price history
No price changes since tracking began on 2026-09-24. We check hourly.
Cost calculator
Cheaper alternatives to Claude Sonnet 4.5
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About Claude Sonnet 4.5
Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...
FAQ
How much does Claude Sonnet 4.5 cost?
Claude Sonnet 4.5 by Anthropic costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with a 1M token context window. A typical request with 2,000 input and 500 output tokens costs about $0.0135.
What is the context window of Claude Sonnet 4.5?
Claude Sonnet 4.5 supports up to 1,000,000 tokens of context and up to 64,000 output tokens per request.
Has Claude Sonnet 4.5’s price changed?
No price changes recorded since ModelBank started tracking it on 2026-09-24.
Is Claude Sonnet 4.5 being deprecated?
No retirement date has been announced for Claude Sonnet 4.5 as of 2026-09-24.
What are cheaper alternatives to Claude Sonnet 4.5?
Cheaper options include Ling 3.0 Flash VL ($0.06/$0.18), GPT-6 Luna ($0.10/$0.50), DeepSeek V4.1 Flash ($0.14/$0.42), GLM 5.3 Flash ($0.15/$0.50).