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Tier B — Production
Runs in:USMade in:United States
xAI

Grok 4.3

Tier B — Production · 1.048576M tokens

Tokonomix Editorial Team·Reviewed by Mes Kalkan··
Section 01

Speed analysis

Latency measured across all benchmark runs. P50 (median) and P95 (95th percentile) give a realistic picture of response speed under normal and peak load.

P50 latency (median)P95 latency36 runs
1182231034384565569310-0110-10ms
Section 02

Pricing

What you pay per million tokens when you use this model on Tokonomix, plus an estimate for a typical conversation.

💰
API rates — Grok 4.3
$1.87 per 1M input tokens
$3.74 per 1M output tokens
≈ $0.0019 per typical conversation (800 tokens)
Input vs output price (per 1M tokens)
per 1M input tokens$1.87
per 1M output tokens$3.74
Section 03

Tokens per second

Throughput in tokens per second, derived from measured P50 latency. Higher is better; fluctuations track provider-side load.

Throughput (tokens / s)152 / avg 121
16854

Estimated from P50 latency × 200 output tokens — the absolute number depends on this assumption; the trend is what matters.

Section 04

Capabilities

jsontoolsvision
Section 05

Availability

Availability

How often this model answers when we call it — measured across real API requests and live tests over the last 30 days. This is separate from quality: these numbers only tell you whether the model responds, not how good the answer is.

Last 7 days

100.0%

n=1

Last 30 days

100.0%

n=2

Median response time

15,356ms

n=2

Based on 110 measurements over the last 30 days.

Technical details

Only live API calls and live-test requests count — internal probes and benchmark runs are excluded.

Calls with a custom API key (BYOK) are excluded: those failures are key-specific, not a sign of model downtime.

Failed calls are NOT included in quality scores — quality is measured on successful responses only. Availability and quality are independent signals.

Median response time (p50) across successful calls with a recorded duration. Outliers (very slow or very fast calls) pull the median less than the average.

Total calls (30d)

2

OK responses (30d)

2

Total calls (7d)

1

OK responses (7d)

1

Section 06

Tokonomix benchmark verdicts

● 2026-10-04

Grok 4.3 debuts with strong multimodal performance across benchmarks

Grok 4.3 enters the benchmark landscape as a competitive multimodal model with solid performance across core evaluation suites. The model achieves 87.8% on MMLU, placing it in the upper tier of current language models, alongside 88.3% on MMLU Pro and 78.6% on GPQA Diamond, demonstrating strong reasoning capabilities. Mathematical performance is robust with 91.6% on MATH-500 and 90.1% on GSM8K, while coding abilities show well with 89.7% on HumanEval and 84.5% on LiveCodeBench. Vision capabilities debut at 78.9% on MMMU, indicating competent multimodal understanding. Context handling extends to 128K tokens with function calling support, making it suitable for complex applications. The model shows balanced performance without obvious weaknesses in core domains. As a first-generation baseline, Grok 4.3 establishes itself as a capable general-purpose model with particular strength in mathematical reasoning and coding tasks. Users should find it well-suited for applications requiring both text and vision processing, though performance in specialized domains will need evaluation in real-world scenarios.

Quality

—

Latency p50

—

Test runs

0

✓ Strong MATH-500 at 91.6%✓ Vision support added (MMMU 78.9%)✓ 128K context with function calling✓ Competitive coding performance
Last automated test
Oct 10, 2026 · 02:04 UTC · Speed benchmark
P50 latency
1314 ms
P95 latency
1543 ms
Errors
0 / 6 runs
Last reviewed by Tokonomix Team·October 10, 2026