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Anthropic: Claude Sonnet 4.5

Anthropic: Claude Sonnet 4.5 is a text model from Anthropic, with a 1M-token context window, priced at $3.00 in · $15.00 out / 1M. On Fully Informed you can add Anthropic: Claude Sonnet 4.5 to a multi-model panel, where it answers independently, debates the other models and gets cross-checked for blind spots.

Vendor AnthropicType Text1M contextPrice $3.00 in · $15.00 out / 1M
Put Anthropic: Claude Sonnet 4.5 on the panel →
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...
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Anthropic: Claude 3 Haiku$0.25 in · $1.25 out / 1MAnthropic: Claude Fable 5$10.00 in · $50.00 out / 1MAnthropic: Claude Fable Latest$10.00 in · $50.00 out / 1MAnthropic Claude Haiku Latest$1.00 in · $5.00 out / 1MAnthropic: Claude Opus Latest$5.00 in · $25.00 out / 1MAnthropic Claude Sonnet Latest$2.00 in · $10.00 out / 1M
FAQ
What is Anthropic: 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...
What is the context window of Anthropic: Claude Sonnet 4.5?
Anthropic: Claude Sonnet 4.5 supports a 1M-token context window.
How much does Anthropic: Claude Sonnet 4.5 cost?
Anthropic: Claude Sonnet 4.5 is priced at $3.00 in · $15.00 out / 1M via OpenRouter.
What are alternatives to Anthropic: Claude Sonnet 4.5?
Comparable text models include Anthropic: Claude 3 Haiku, Anthropic: Claude Fable 5, Anthropic: Claude Fable Latest, Anthropic Claude Haiku Latest.
Model data via OpenRouter. Browse all models · Run a panel on Fully Informed