Grok 4.3

by xAI

xAI's Grok 4.3 model with always-on reasoning, 1M context window, vision, and agentic tool use

Key info

Input
Output
Features
Context window
1M
Max output
Input price
$1.25 /1M
Output price
$2.50 /1M
  • EU residency available
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Benchmarks

Independent benchmark scores — composite indices for reasoning, coding, and math, plus individual eval scores where available.

Global rank#14 of 518 LLMs
TierFrontier
Output speed218 tok/s
First token20.59s
Intelligence Index53.2
Coding Index41.0
GPQA Diamond
90%
Humanity's Last Exam
35%
SciCode
47%
IFBench
81%
Long-context reasoning
64%
Terminal-Bench Hard
38%
τ²-Bench Telecom
98%

Available routes

Grok 4.3 runs on 2 different routes through the Opper gateway. Compare residency, ZDR, and training posture at a glance — full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
xAIUSEnterpriseNo$1.25$2.50
xAIEUEnterpriseNo$1.25$2.50

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting Grok 4.3 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

xAI United States🇺🇸

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

xAI Ireland🇮🇪

Zero data retention is available via Opper Enterprise contract. No training on customer data. EU; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
Not applicable — data stays in EU

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Side-by-side on privacy, EU hosting, pricing, and benchmarks.

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Grok 4.3 by xAI — pricing, benchmarks, EU/US hosting | Opper AI