xAI
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...
OpenRouter
Price record: 2026-09-17. Source: openrouter.
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62.0
Quality Score
1443
Arena ELO
3.0T
Parameters
1M
Context
This measures the amount of verifiable public evidence we have, not how capable the model is. A missing field means it has not been verified yet, not that its value is zero.
17 of 22 public signals
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Apr 2026
Released
4/5 signals
3/4 signals
5/5 signals
1/4 signals
4/4 signals
Parameters
3.0T
Training compute
5.0e26 FLOP
Dataset scale
Not reported
Base model
Not reported
Source-reported access: API access · Speculative confidence
Gaps we are still tracking
1243
ELO Score
1237 - 1249
95% Confidence
+/-6 points
22.7K
Battles
Sep 17, 2026
Last Updated
1443
ELO Score
1435 - 1450
95% Confidence
+/-8 points
5.7K
Battles
Sep 7, 2026
Last Updated