GPT-5.4
400K context. Strong reasoning, coding, and analysis. Vision input. Native web search. $2.50/$15 per million tokens — replaces GPT-5.2 at the same price point.
GPT-5.4 is OpenAI's mid-flagship in the GPT-5.4 series — the working horse between the cheaper 5.4 Mini and the top-tier GPT-5.5. It ships with a 400K context window, vision input, native web search via the Responses API, and the same industry-leading tool calling that defines the GPT-5 line. Priced at $2.50 per million input tokens and $15 per million output, it replaces GPT-5.2 at the same price point and undercuts GPT-5.5 ($5/$30) by half on input. The case for GPT-5.4: you want OpenAI quality and tool-calling stability without paying the flagship premium, you need a long context window (400K, the same window as GPT-5.5 at half the input price), and you're doing professional reasoning, coding, or document analysis. The case against: cutting-edge benchmark work (GPT-5.5 still leads), refactor-heavy coding (Claude Sonnet 4.6 edges it), and 500K+ token tasks (Gemini 3 Pro's 1M context wins).
Council AI exposes GPT-5.4 on every paid plan inside multi-model councils. You don't manage API keys, rate limits, or per-call pricing — the model is bundled into your monthly plan budget, and the orchestrator picks it (or routes around it) based on the task. When the council runs, GPT-5.4 produces its independent answer in parallel with the other selected models, then the Moderator synthesizes a single response that reconciles the disagreements.
GPT-5.5 is the flagship with the most aggressive reasoning levels and the highest benchmarks. GPT-5.4 is the mid-tier — same family, 80-90% of the quality, half the input price, and a larger 400K context window.
$2.50 per million input tokens and $15.00 per million output tokens. Council AI bundles it inside monthly plan budgets so you don't track per-call pricing.
Yes — text and image input are both supported. You can upload screenshots, photos, diagrams, and charts.
Yes — native web search via the OpenAI Responses API. No extra integration is needed when you call it through Council AI.
Use GPT-5.4 for professional reasoning, long-document work, and anything where quality matters. Use 5.4 Mini for high-volume everyday tasks where you want to save ~70% on tokens.
GPT-5.4 — at the same $2.50/$15 price point, with a larger 400K context window and the upgraded GPT-5.4 reasoning core.