OpenAI releases GPT-5.4 mini and nano for low-cost subagents
OpenAI released two smaller GPT-5.4 tiers with coding, tool-use, and computer-use support at substantially lower prices and broad API availability.
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Why it moved the index
Low-cost, broadly available coding, tool-use, computer-use, and subagent tiers expand the scale of autonomous workflows without implying frontier-level standalone capability.
Assessment history
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R1
Toward 47 · confidence 84
New exact low-cost model tiers absent from durable context.
11 Aug 2026
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DoomBench assesses “OpenAI releases GPT-5.4 mini and nano for low-cost subagents” as evidence moving toward doom, with magnitude 47 and confidence 84 out of 100 in the deployment reach category.
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The DoomBench assessment of “OpenAI releases GPT-5.4 mini and nano for low-cost subagents” is based on reporting from OpenAI and records the editorial rationale, source quality, attribution, and revision history.
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DoomBench summarizes “OpenAI releases GPT-5.4 mini and nano for low-cost subagents” as follows: OpenAI released two smaller GPT-5.4 tiers with coding, tool-use, and computer-use support at substantially lower prices and broad API...
https://www.doombench.com/news/openai-releases-gpt-5-4-mini-and-nano-for-low-cost-subagents-2026-03-17