Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...
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SpaceXAI: Grok 4.3 holds the #123 spot for context size out of 444 chat models in the CoreAI catalog — 1M tokens, roughly 750,000 words or 1,500 pages of text in a single conversation. On price, it is the #146 cheapest of 205 standard-tier models by input cost. It joined the catalog on 2026-04-30. 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 SpaceXAI: Grok 4.3 and SpaceXAI: Grok 4.20 Multi-Agent side by side to judge with your own eyes.
A typical question (about 1,000 tokens in, 500 out) runs $0.00250 on SpaceXAI: Grok 4.3's raw per-token rates; a heavy session with a 50K-token document costs about $0.075. On CoreAI you don't juggle these numbers — one subscription covers SpaceXAI: Grok 4.3 and 300+ other models under a plan usage limit, with no API keys. See plans.
SpaceXAI: Grok 4.3 handles 1M tokens of context — roughly 750,000 words, or about 1,500 pages of text in one conversation.
SpaceXAI: Grok 4.3's underlying rates are $1.25 per 1M input tokens and $2.5 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 — SpaceXAI: Grok 4.3 accepts image input, so you can attach screenshots, photos or diagrams and ask questions about them.
Yes. SpaceXAI: Grok 4.3 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 SpaceXAI: Grok 4.3 in the model selector, and chat — no API key, no per-token billing. One subscription covers SpaceXAI: Grok 4.3 and 300+ other models.
The closest alternatives on CoreAI are SpaceXAI: Grok 4.20 Multi-Agent, StepFun: Step 5 Preview, DeepSeek: DeepSeek V4 Flash Latest — 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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