Yeschat

Chat with Claude Opus 5 Online

The newest Opus for hard, multi-step work from plan to finished result, on the Ultra plan in the YesChat chat.

What is Claude Opus 5?

Claude Opus 5 is the newest Opus model on YesChat. Kie.ai's model page describes it as Anthropic's thoughtful and proactive model for end-to-end coding, complex reasoning, visual analysis and long-horizon work, and lists improvements over Opus 4.8 in planning, verifying results and recovering from failed approaches. On YesChat it is on the Ultra plan at 2×. Click "Chat with Claude Opus 5 in YesChat" to open the YesChat chat with it already selected.

What Claude Opus 5 is good for

Hard tasks from plan to result

Give it the goal and the material; it can plan the steps, work through them and check the result.

Serious coding work

Multi-file features, refactors across a project, and finding the root cause of a bug instead of patching the symptom.

Charts, scans and documents

In agent mode it reads screenshots, scans, PDFs and spreadsheets, so you can ask questions about what is in them.

Office deliverables

Ask agent mode for an edited Word file, a cleaned spreadsheet or a slide deck as an editable .pptx.

Which Claude model to choose on YesChat

YesChat offers five Claude models. They differ in depth, in the plan that includes them and in how many credits a message uses. Haiku and Sonnet models are on the Pro plan; Opus models are on the Ultra plan.

Claude Haiku 4.5

Pro plan, 1×. The lightest Claude: quick questions and short tasks where a fast reply matters more than depth. More about Claude Haiku 4.5.

Claude Sonnet 4.6

Pro plan, 1×. The previous Sonnet generation: useful for comparing answers or keeping the model you used before. More about Claude Sonnet 4.6.

Claude Sonnet 5

Pro plan, 1×. The newest Sonnet and the default pick on Pro for writing, analysis and coding. More about Claude Sonnet 5.

Claude Opus 4.8

Ultra plan, 1×. The earlier Opus: deep reasoning and long tasks at half the multiplier of Opus 5. More about Claude Opus 4.8.

Claude Opus 5

Ultra plan, 2×. The newest Opus: the hardest multi-step tasks, where follow-through matters most.

How to chat with Claude Opus 5 online

  • Create a free account

    Sign up for free, no credit card needed. A free account includes 15 messages a day with GPT-5.6 Luna.

  • Choose the Ultra plan

    Claude Opus 5 is included from the Ultra plan. Paid plans share one monthly pool of credits for chat, images, video and music.

  • Click "Chat with Claude Opus 5 in YesChat" and ask

    Click "Chat with Claude Opus 5 in YesChat": the YesChat chat opens with Claude Opus 5 already selected. Type your question; upload a file if the task is about a document.

Frequently Asked Questions