Is Grok 4.3 out yet?
Yes.
About Grok 4.3
xAI's current flagship — native video input, document generation, and stronger tool-calling.
How we confirmed it
Released via official access
April 17, 2026 at 12:00 AM UTC
Release timeline
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Benchmarks
GDP.pdf
Grok 4.3 (High) · via Epoch AI · captured Aug 7, 2026 · source
8
LM Arena#75
grok-4.3 · via LM Arena · 53,234 votes · captured Aug 7, 2026 · source
1441.604717389187
InstructionFollowing#5
Grok 4.3 · via BenchLM.ai · captured Aug 7, 2026 · source
94.4
Knowledge#47
Grok 4.3 · via BenchLM.ai · captured Aug 7, 2026 · source
55
Sourced metrics mirrored with attribution - not community sentiment.
Data from BenchLM.ai.
Data from Epoch AI, “AI Benchmarking Hub” (CC BY 4.0).
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Community consensus
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OutYet reporting
- Grok 4.3 reaches Bedrock through a Mantle-only integration path
AWS's Mantle endpoint puts xAI's Grok 4.3 inside Amazon Bedrock, but its deployment path differs from an ordinary Bedrock Runtime integration.
- Grok 4.3 on Bedrock adds an OpenAI-compatible, but nonstandard, route
AWS's new implementation guide makes Grok 4.3 available through a regional Mantle endpoint, with a different integration path from standard Bedrock Runtime APIs.
Compare Grok 4.3 with another model →
Also waiting on: Gemini 3.5 Pro, Claude Fable 5.1, Claude Mythos 5.1, GLM-6
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