MODEL SIGNAL · OPENAI
GPT-5.4
Previous OpenAI flagship, widely regarded as the best all-rounder with the largest developer ecosystem. Strong performance across coding, reasoning, and multimodal tasks.
CATEGORYGeneral
CONTEXT256K
RELEASEDJanuary 15, 2026
Key Features
- Best ecosystem breadth
- Multimodal (text+vision)
- Advanced tool use
- Strong instruction following
- Widely deployed
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The Model Signal report for GPT-5.4 is still compounding. It synthesizes automatically from Signal + Noise wire coverage and the provider announcement — check back as the wire mentions this model.