Compare/GPT-5.6 Luna (low) vs Pixtral Large

GPT-5.6 Luna (low)vsPixtral Large

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

OpenAI

GPT-5.6 Luna (low)

Input
$1/M
Output
$6/M
Speed
247 tok/s
TTFT
1.01s
Mistral

Pixtral Large

Input
$2/M
Output
$6/M
Speed
TTFT

Winner by Category

Cheaper
GPT-5.6 Luna (low)
Faster (tok/s)
GPT-5.6 Luna (low)
Lower Latency
Pixtral Large
Benchmarks (5-6)
Pixtral Large

Pricing Comparison

MetricGPT-5.6 Luna (low)Pixtral Large
Input ($/M tokens)$1$2
Output ($/M tokens)$6$6
Cost for 1M input + 100K output tokens:
GPT-5.6 Luna (low)$1.60
Pixtral Large$2.60

Speed Comparison

Output Speed (tokens/s) — higher is better
GPT-5.6 Luna (low)
247 tok/s
Pixtral Large
Time to First Token (seconds) — lower is better
GPT-5.6 Luna (low)
1.01s
Pixtral Large

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
33.38.1
Coding Index
44.2
Math Index
2.3
GPQA Diamond
83.5%50.5%
MMLU-Pro
70.1%
LiveCodeBench
26.1%
AIME 2025
2.3%
MATH-500
71.4%
Humanity's Last Exam
18.8%3.6%
SciCode
45.6%29.2%
IFBench
34.5%
TerminalBench
GPT-5.6 Luna (low)5 wins
6 winsPixtral Large

Frequently Asked Questions

Which is cheaper, GPT-5.6 Luna (low) or Pixtral Large?

GPT-5.6 Luna (low) is cheaper overall. Its blended price (3:1 input/output ratio) is $2.25/M tokens vs $3.00/M for Pixtral Large.

Which model performs better on benchmarks?

Pixtral Large wins 6 out of 12 benchmarks compared to 5 for GPT-5.6 Luna (low). See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

GPT-5.6 Luna (low) generates tokens faster at 247 tok/s vs 0 tok/s. However, Pixtral Large has lower time-to-first-token (0.00s vs 1.01s).

When should I use GPT-5.6 Luna (low) vs Pixtral Large?

Choose based on your priorities: GPT-5.6 Luna (low) for lower cost, Pixtral Large for stronger benchmark performance, and GPT-5.6 Luna (low) for faster generation. For latency-sensitive apps, check the TTFT comparison above.