Anthropic released Claude Opus 5 on Friday, July 24, positioning the model as its go-to offering for everyday business AI workloads — powerful enough to approach the capabilities of its flagship Fable 5 at half the cost.

Opus 5 is the fourth model in Anthropic's Claude 5 family, joining Sonnet 5 (released June 30), the powerful Mythos 5, and the flagship Fable 5. According to Anthropic, Opus 5 is designed for "knowledge work and automation" — handling complex analysis, long-form content generation, coding, and multi-step reasoning tasks.

The pricing is aggressive: $5 per million input tokens and $25 per million output tokens — identical to the previous Opus 4.8 pricing, but delivering significantly more capability. Fable 5, by comparison, costs roughly twice as much.

Unlike Fable 5, Opus 5 does not retain user data for 30 days. Anthropic said it keeps Fable 5 inputs and outputs for safety monitoring and to prevent future misuse — a policy that had drawn scrutiny from enterprise customers concerned about data privacy.

The launch comes at a furious moment in the AI model race. OpenAI released its GPT-5.6 family (Sol, Terra, and Luna) earlier in July. Google's Gemini 3.5 Pro has reportedly been delayed according to Bloomberg (a claim Google pushed back against). And China's Moonshot AI debuted its open-weight Kimi K3 model last week, claiming it rivals both Fable 5 and GPT-5.6 Sol.

This competitive pressure carries existential stakes: both Anthropic and OpenAI are preparing for initial public offerings. Anthropic filed confidential IPO paperwork in June, followed shortly by OpenAI. While Anthropic appears on track to go public later this year, OpenAI may delay its IPO until 2027. OpenAI also faces a trade secrets lawsuit from Apple, further complicating its plans.

Anthropic has had a turbulent regulatory year: the Trump administration initially forced the company to pull both Mythos 5 and Fable 5 from the market over cybersecurity concerns, before later allowing their reinstatement. OpenAI voluntarily submitted GPT-5.6 Sol for government evaluation before its wide release.

The company is also negotiating with banks to expand its credit lines by several billion dollars ahead of the planned IPO, signaling confidence in continued growth as enterprise AI adoption accelerates worldwide.

Sources