xAI
Grok 4.3
xAI's newer mainline — 1M context, same low price.
API onlytextimageREL 2026-04-30
Compare this model →Verified 2026-06-12
Overview
Grok 4.3 is xAI's newer mainline release with a 1M-token context window at the same $1.25/$2.50 pricing as Grok 4.20. It trades the 2M context for newer training and improved instruction following.
Benchmark scores
Methodology →Intelligence53
Codingn/a
Reasoningn/a
Mathn/a
Sources and verification
- Intelligence: Artificial Analysis Intelligence Index · checked 2026-06-12
- Catalogue and pricing: OpenRouter model record · checked 2026-06-12
Strengths and weaknesses
Strengths
- Cheap for its class
- 1M context
- Fast
Trade-offs
- Limited independent benchmark coverage
- No file input (text+image only)
Reach for this model when
Cost-sensitive general assistant and analysis workloads.
Run something like it locally
Open-weights peers: GLM-5.1 or Qwen3.7 via vLLM.
