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Anthropic · 2026

Claude Sonnet 4.5

9.2Balanced

CompanyAnthropic

Release2026

TypeBalanced

Context window500K tokens

Input typesText, Image

Output typesText

ReasoningExcellent

CodingExcellent

MultimodalPartial

API availableYes

Pricing$3-15 / M tokens

Overview

Claude Sonnet 4.5 is a balanced model from Anthropic, released in 2026. It accepts text, image as input and produces text. With a context window of 500K tokens, it is well suited to fast, affordable coding and everyday tasks.

Capabilities

On reasoning, Claude Sonnet 4.5 is rated excellent, while its coding ability is excellent. Multimodal support: Partial. These characteristics make it a strong fit for fast, affordable coding and everyday tasks. As with any frontier system, real-world performance depends heavily on how you prompt and integrate it.

Availability & Pricing

Claude Sonnet 4.5 is accessible via an API. Pricing model: $3-15 / M tokens. Availability and pricing for AI models change frequently; confirm the latest details from Anthropic before building on it.

Best Use Cases

The sweet spot for Claude Sonnet 4.5 is fast, affordable coding and everyday tasks. Teams choosing a model should weigh context length, cost, latency and modality against their workload — Claude Sonnet 4.5 is a particularly good match when those priorities align with its strengths.

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