Compare/Gemini 3.5 Flash-Lite vs Grok 4.3 (Non-reasoning)

Gemini 3.5 Flash-LitevsGrok 4.3 (Non-reasoning)

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

Google

Gemini 3.5 Flash-Lite

Input
$0.3/M
Output
$2.5/M
Speed
600 tok/s
TTFT
9.51s
SpaceXAI

Grok 4.3 (Non-reasoning)

Input
$1.25/M
Output
$2.5/M
Speed
93 tok/s
TTFT
1.09s

Winner by Category

Cheaper
Gemini 3.5 Flash-Lite
Faster (tok/s)
Gemini 3.5 Flash-Lite
Lower Latency
Grok 4.3 (Non-reasoning)
Benchmarks (5-2)
Gemini 3.5 Flash-Lite

Pricing Comparison

MetricGemini 3.5 Flash-LiteGrok 4.3 (Non-reasoning)
Input ($/M tokens)$0.3$1.25
Output ($/M tokens)$2.5$2.5
Cost for 1M input + 100K output tokens:
Gemini 3.5 Flash-Lite$0.55
Grok 4.3 (Non-reasoning)$1.50

Speed Comparison

Output Speed (tokens/s) — higher is better
Gemini 3.5 Flash-Lite
600 tok/s
Grok 4.3 (Non-reasoning)
93 tok/s
Time to First Token (seconds) — lower is better
Gemini 3.5 Flash-Lite
9.51s
Grok 4.3 (Non-reasoning)
1.09s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
36.524.8
Coding Index
49.335.2
Math Index
GPQA Diamond
83.8%65.8%
MMLU-Pro
LiveCodeBench
AIME 2025
MATH-500
Humanity's Last Exam
17.5%6.5%
SciCode
40.9%37.4%
IFBench
47.6%
TerminalBench
18.9%
Gemini 3.5 Flash-Lite5 wins
2 winsGrok 4.3 (Non-reasoning)

Frequently Asked Questions

Which is cheaper, Gemini 3.5 Flash-Lite or Grok 4.3 (Non-reasoning)?

Gemini 3.5 Flash-Lite is cheaper overall. Its blended price (3:1 input/output ratio) is $0.85/M tokens vs $1.56/M for Grok 4.3 (Non-reasoning).

Which model performs better on benchmarks?

Gemini 3.5 Flash-Lite wins 5 out of 12 benchmarks compared to 2 for Grok 4.3 (Non-reasoning). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

Gemini 3.5 Flash-Lite generates tokens faster at 600 tok/s vs 93 tok/s. However, Grok 4.3 (Non-reasoning) has lower time-to-first-token (1.09s vs 9.51s).

When should I use Gemini 3.5 Flash-Lite vs Grok 4.3 (Non-reasoning)?

Choose based on your priorities: Gemini 3.5 Flash-Lite for lower cost, Gemini 3.5 Flash-Lite for stronger benchmark performance, and Gemini 3.5 Flash-Lite for faster generation. For latency-sensitive apps, check the TTFT comparison above.