Anthropic upgrades Claude with new Opus 5 model, details here

Anthropic has released its latest AI model with Claude Opus 5. The new version arrives about two months after the previous Opus model upgrade, matching Anthropic’s previous upgrade cadence.

Anthropic says Opus 5 offers near Fable 5 intelligence for half the cost

Anthropic currently offers a lot of AI models under the Claude umbrella.

The three main models are Haiku (smallest and cheapest), Sonnet (medium size and price), and Opus (largest and most expensive of the three).

Today’s release upgrades Claude’s Opus model from version 4.8 to version 5.

Anthropic describes Opus 5 as a “thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.”

Fable 5 is the released version of Mythos with safeguards, which Anthropic originally held back due to its capabilities around cybersecurity. Fable 5 remains Anthropic’s most capable model.

More details from Anthropic on the new Opus 5 model option below:

Opus 5 is designed to be used every day: it works more efficiently than other models. It’s the new default model on Claude Max, and the strongest model on Claude Pro.

Anthropic points to two more releases today in addition to Claude Opus 5:

• Mid-conversation tool changes on the Claude Platform. Within a conversation, developers can now change which tools Claude can use without invalidating the prompt cache.
• Automatic fallbacks on the API. Users can now choose to have requests that are flagged by our safety classifiers on Opus 5 (or Fable 5) automatically route to another model. With automatic fallbacks on, API requests always route to the best available model by default rather than being blocked.

Pricing and availability

Anthropic says Claude Opus 5 is available today for every platform. Opus 5 is $5/million input token and $25/million output token, matching Opus 4.8 pricing.

You can learn much more about Anthropic’s new Claude Opus 5 model release here.

Related Anthropic stories:

• Anthropic is giving teachers free access to premium Claude features, details here
• Anthropic upgrades Claude voice mode with more powerful models
• Claude Code brings live iOS app testing into its Mac app