Introducing Claude Models in Release0: Build smarter, faster, deeper#

We’re excited to announce that you can now use Claude Sonnet 4.5, Claude Haiku 4.5 and Claude Opus 4.1 — the latest models from Anthropic — right inside your Release0 agents. Whether you’re automating complex support workflows, scaling conversational assistants, or building multi‑agent systems, these new model options give you more flexibility, performance and cost control.

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🔍 What’s new: Claude models in Release0#

✅ Model summary#

Model	Description	Ideal Use Cases
Claude Sonnet 4.5	Anthropic’s flagship “brain” model — advanced reasoning, sustained context, high‑capability.	Premium assistants, deep logic workflows, agent orchestration
Claude Haiku 4.5	Lightweight yet powerful — near‑frontier performance at lower cost and higher speed.	Real‑time chatbots, high‑volume routing, parallel sub‑agent tasks
Claude Opus 4.1	Deep thinker and review model — precision, detail‑oriented reasoning for mission‑critical tasks.	Complex multi‑step reasoning, quality checks

🔧 How to enable in Release0#

1. In your agent editor, navigate to the AI Blocks and select Anthropic block.
2. From the Model dropdown, you’ll now find the choices: claude‑sonnet‑4.5, claude‑haiku‑4.5, claude‑opus‑4.1.
   (Ensure your Anthropic API key is configured in your Release0 integrations.)
3. Choose the model that best fits your workflow — you can even chain multiple models (e.g., Haiku for high‑volume tasks, then Sonnet for final orchestration).
4. Test and publish your agent as usual — you’ll benefit from the model’s improvements seamlessly.

⚠️ Note: Make sure your Anthropic organization and API credentials have access to the selected model tier.

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🧭 Choosing the right Claude model in your agent#

Model + Purpose breakdown#

• If you need deep reasoning, long‑context workflows or autonomous multi‑step orchestration, go with Sonnet 4.5.
• If you’re focused on speed, cost‑efficiency and scaling many parallel tasks, lean into Haiku 4.5.
• If your priority is precision, detailed reviews, or catching edge‑case logic, then Opus 4.1 is your choice.

Pro tip: Chain models for efficiency#

You can combine them in your flows: for example, let Haiku 4.5 handle rapid classification or routing, then escalate to Sonnet 4.5 for deep reasoning, and finally use Opus 4.1 for a quality‑gate review. This mix gives you performance without overpaying for every step.

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💡 Best practices for high‑impact agents#

• Pass full chat history into the Anthropic block using the Dialogue message type for context‑aware responses.
• Use vision support if your workflow includes image inputs — Claude models support image URLs.
• For high‑volume use, monitor token usage with the cheaper model (Haiku 4.5) and only escalate to higher‑cost models when logic complexity demands it.
• Test with real user flows early — this helps validate that the model choice meets response time, cost and quality goals.

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📈 Why this matters#

With this update, Release0 gives you access to the latest frontier of AI models from Anthropic. Whether you’re building internal tools, external chatbots or multi‑agent orchestration systems, you now have a tiered model stack you can choose from — giving you the ability to match cost and capability to the task at hand.

Integrations like this help you:

• Reduce development overhead by leveraging high‑capability agents out of the box
• Optimize cost by selecting leaner models where full reasoning power isn’t required
• Scale faster by using architecture‑designed models for orchestration (Sonnet) and execution (Haiku)
• Increase quality and reliability by using precision‑oriented models for critical review (Opus)

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✅ Get started today#

Head into your Release0 workspace, open the agent editor, select the Anthropic integration block, pick your model of choice, and push your agent live. The new Claude model options are already available — go ahead and build smarter automation.

Have questions? Dive into our Release0 documentation on Anthropic integration or reach out to our support team.

Happy building! 🎯