Add GPT-5.5 support#143
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Reviewed commit: bb6cb2bc25
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| GPT_5_4_2026_03_05_MODEL: 272000, | ||
| GPT_5_4_MINI_2026_03_17_MODEL: 400000, | ||
| GPT_5_4_NANO_2026_03_17_MODEL: 400000, | ||
| GPT_5_5_2026_04_23_MODEL: 272000, |
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MODEL_CONTEXT_LENGTHS sets GPT_5_5_2026_04_23_MODEL to 272000, but GPT-5.5’s API context window is 1M tokens; this value is consumed by messages_within_context_window() to prune history, so any workspace using gpt-5.5 will drop a large portion of valid prompt context long before hitting the real model limit. That regression directly reduces answer quality for longer threads and defeats the main benefit of adding GPT-5.5 support.
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It's the pricing and scenario concern.
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