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Vibe Check: Anthropic Just Made Opus Cheaper Without Calling It That

Sonnet 4.6 delivers Opus-close performance at half the price—but speed didn't come along for the ride

Anthropic's new Sonnet 4.6 model is better at using computers.

Anthropic launched the latest version of Claude Sonnet on Tuesday, which it says “approaches Opus-level intelligence,” featuring improvements in coding and computer use with tasks like navigating spreadsheets or filling out web forms. Sonnet 4.6 is now replacing Sonnet 4.5 as the default model for free and pro Claude users.

Introducing Sonnet 4.6

Claude Sonnet 4.6 is our most capable Sonnet model yet. It’s a full upgrade of the model’s skills across coding, computer use, long-context reasoning, agent planning, knowledge work, and design. Sonnet 4.6 also features a 1M token context window in beta.

I built in 10 minutes what takes a Goldman analyst a day + the 4 prompts to do it yourself

I built a full operating model last week. Revenue projections, cost structure, unit economics, scenario analysis — the works. It took ten minutes. Then I told Claude in PowerPoint to build the board deck from that model — five slides, executive summary, financials, key metrics, risks, asks — using my company’s actual slide template. Twenty minutes later I had a presentation with charts referencing the live Excel data, formatted in my brand’s fonts and colors, that looked like my team spent two days on it. A Goldman Sachs analyst looked at the model and told me it was solid. The kind of output that would have taken him a full day. The deck would have taken another.

Anthropic releases Sonnet 4.6

Anthropic has released a new version of its mid-size Sonnet model, keeping pace with the company's four-month update cycle.