Compare/Grok 4 Fast (Reasoning) vs Ring-flash-2.0

Grok 4 Fast (Reasoning)vsRing-flash-2.0

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

SpaceXAI

Grok 4 Fast (Reasoning)

Input
$0.2/M
Output
$0.5/M
Speed
TTFT
InclusionAI

Ring-flash-2.0

Input
$0.14/M
Output
$0.57/M
Speed
TTFT

Winner by Category

Cheaper
Ring-flash-2.0
Faster (tok/s)
Tie
Lower Latency
Tie
Benchmarks (10-0)
Grok 4 Fast (Reasoning)

Pricing Comparison

MetricGrok 4 Fast (Reasoning)Ring-flash-2.0
Input ($/M tokens)$0.2$0.14
Output ($/M tokens)$0.5$0.57
Cost for 1M input + 100K output tokens:
Grok 4 Fast (Reasoning)$0.25
Ring-flash-2.0$0.20

Speed Comparison

Speed data not available for these models.

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
27.48.2
Coding Index
Math Index
89.783.7
GPQA Diamond
84.7%72.5%
MMLU-Pro
85.0%79.3%
LiveCodeBench
83.2%62.8%
AIME 2025
89.7%83.7%
MATH-500
Humanity's Last Exam
17.0%8.9%
SciCode
44.2%16.8%
IFBench
50.5%43.3%
TerminalBench
18.9%7.6%
Grok 4 Fast (Reasoning)10 wins
0 winsRing-flash-2.0

Frequently Asked Questions

Which is cheaper, Grok 4 Fast (Reasoning) or Ring-flash-2.0?

Ring-flash-2.0 is cheaper overall. Its blended price (3:1 input/output ratio) is $0.25/M tokens vs $0.28/M for Grok 4 Fast (Reasoning).

Which model performs better on benchmarks?

Grok 4 Fast (Reasoning) wins 10 out of 12 benchmarks compared to 0 for Ring-flash-2.0. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Both models have comparable generation speeds.

When should I use Grok 4 Fast (Reasoning) vs Ring-flash-2.0?

Choose based on your priorities: Ring-flash-2.0 for lower cost, Grok 4 Fast (Reasoning) for stronger benchmark performance, and both have comparable speed. For latency-sensitive apps, check the TTFT comparison above.