GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
With CoreAI, you can start chatting with OpenAI: GPT-5 Nano instantly — no separate subscription needed. CoreAI lets you chat with OpenAI: GPT-5 Nano alongside 300+ other AI models from OpenAI and other providers like OpenAI, Anthropic, Google, Meta, and more.
Among the 392 chat models on CoreAI, OpenAI: GPT-5 Nano ranks #128 by context window — 400K tokens, roughly 300,000 words or 600 pages of text in a single conversation. On price, it is the #16 cheapest of 128 budget-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 Nano and OpenAI: GPT-4.1 Nano (batch) side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00025 on OpenAI: GPT-5 Nano's raw per-token rates; a heavy session with a 50K-token document costs about $0.005. On CoreAI you don't juggle these numbers — one subscription covers OpenAI: GPT-5 Nano and 300+ other models under a plan usage limit, with no API keys. See plans.
OpenAI: GPT-5 Nano handles 400K tokens of context — roughly 300,000 words, or about 600 pages of text in one conversation.
OpenAI: GPT-5 Nano's underlying rates are $0.05 per 1M input tokens and $0.4 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 Nano accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. OpenAI: GPT-5 Nano 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 Nano in the model selector, and chat — no API key, no per-token billing. One subscription covers OpenAI: GPT-5 Nano and 300+ other models.
The closest alternatives on CoreAI are OpenAI: GPT-4.1 Nano (batch), Upstage: Solar Pro 4, inclusionAI: Ling-2.6-flash — 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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