GPT 5.5 and rivals tested in Tamagotchi game creation

A user conducted a comparative test of several large language models, including GPT 5.5, Claude Opus 4.8, Fable/Mythos 5, Gemini 3.5 Flash, Deepseek V4 Pro, and Qwen 3.7 Max. The models were tasked with creating an interactive Tamagotchi-style game for a custom agent named Chasbi. The user provided detailed breakdowns of the API costs and tokenization for each model's performance. AI

IMPACT Provides a comparative performance snapshot of leading LLMs in a creative task, informing operator choices.

RANK_REASON User-conducted benchmark comparing multiple LLMs on a specific task. [lever_c_demoted from research: ic=1 ai=1.0]

Read on r/OpenAI →

• Claude Opus 4.8
• Deepseek V4 Pro
• Fable/Mythos 5
• Gemini 3.5 Flash
• GPT 5.5
• OpenAI
• OpenRouter
• Qwen 3.7 Max

• model release
• product

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