GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...
With CoreAI, you can start chatting with OpenAI: GPT-5 instantly — no separate subscription needed. CoreAI lets you chat with OpenAI: GPT-5 alongside 300+ other AI models from OpenAI and other providers like OpenAI, Anthropic, Google, Meta, and more.
Measured against all 420 chat models CoreAI serves, OpenAI: GPT-5 sits at #206 for context capacity — 400K tokens, roughly 300,000 words or 600 pages of text in a single conversation. On price, it is the #141 cheapest of 201 standard-tier models by input cost. It joined the catalog on 2025-08-07. It supports step-by-step reasoning (thinking mode) and accepts image input.
Every model in this table is available on CoreAI — open the web app and run the same prompt through OpenAI: GPT-5 and OpenAI: GPT-5.1-Codex-Max side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00625 on OpenAI: GPT-5's raw per-token rates; a heavy session with a 50K-token document costs about $0.113. On CoreAI you don't juggle these numbers — one subscription covers OpenAI: GPT-5 and 300+ other models under a plan usage limit, with no API keys. See plans.
OpenAI: GPT-5 handles 400K tokens of context — roughly 300,000 words, or about 600 pages of text in one conversation.
OpenAI: GPT-5's underlying rates are $1.25 per 1M input tokens and $10 per 1M output tokens. On CoreAI it is included in one subscription alongside 300+ models, so there is no per-token billing to manage.
Yes — OpenAI: GPT-5 accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. OpenAI: GPT-5 can work through problems step by step before answering; on CoreAI you can toggle thinking mode per message.
Open the CoreAI web app or the iOS/Android app, pick OpenAI: GPT-5 in the model selector, and chat — no API key, no per-token billing. One subscription covers OpenAI: GPT-5 and 300+ other models.
The closest alternatives on CoreAI are OpenAI: GPT-5.1-Codex-Max, OpenAI: GPT Mini Latest, Z.ai: GLM 5.2 — similar tier and capability. The fastest way to choose is running one prompt through them side by side in CoreAI's Compare view.
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