Anthropic has unveiled Claude Opus 4.5, a new flagship model positioned as the company’s most capable system to date. The launch marks a defining shift in the pricing and performance ecosystem, with the company reducing token costs and highlighting advances in reasoning, software engineering accuracy, and enterprise-grade automation.
Anthropic says the new model delivers improvements across both technical benchmarks and real-world testing. Internal materials reviewed by industry reporters show that Opus 4.5 surpassed the performance of every human candidate who previously attempted the company’s most difficult engineering assignment, when the model was allowed to generate multiple attempts and select its strongest solution. Without a time limit, the model’s best output matched the strongest human result on record through the company’s coding environment. While these tests do not reflect teamwork or long-term engineering judgment, the company views the results as an early indicator of how AI may reshape professional workflows.
Pricing is one of the most notable shifts. Opus 4.5 is listed at roughly five dollars per million input tokens and twenty-five dollars per million output tokens, a substantial decrease from the rates attached to earlier Opus models. Anthropic states that this reduction is meant to broaden access to advanced capabilities and push competitors to re-evaluate their own pricing structures.
In performance testing, Opus 4.5 achieved an 80.9 percent score on the SWE-bench Verified benchmar
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