September 23, 2026
You can build a 3D game with text: Higgsfield connects Claude Opus 5.5 to MCP
On September 23, Higgsfield compared Opus 5.5 and GPT-6 Astra on a 3D game in Unreal Engine. Opus 5.5 now works through Higgsfield MCP.
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From an idea to a game prototype. Claude Opus 5.5 versus GPT-6 Astra: building a 3D game in Unreal Engine with Higgsfield.
Introducing Higgsfield x Claude Opus 5.5. Anthropic’s newest model, which is 40% cheaper and over 30% faster than Opus 5, is live on Higgsfield. Pair Opus 5.5 with the Higgsfield MCP and turn your most ambitious ideas into complete products. Available on Claude via Higgsfield MCP and in Higgsfield Supercomputer.
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Previously, Higgsfield Games used Kimi K3 by default, while Claude was connected through a custom connector. Opus 5.5 is now available through Higgsfield MCP: add the URL `https://mcp.higgsfield.ai/mcp` in Settings → Connectors, sign in to Higgsfield, and describe the game in plain text.
Cost of use. On September 22, Anthropic said that Opus 5.5 is 40% cheaper and more than 30% faster than Opus 5 on typical tasks. In the API, Opus 5.5 costs $4 per million input tokens and $20 per million output tokens, versus $10 and $50 for GPT-6 Astra. The average starting price of a game in Higgsfield Games is $3,50, while regenerating visuals or audio consumes credits.
In Higgsfield Games, the model is selected for each generation, although Kimi K3 remains the default in the interface.
