Compare/Mistral Small 3 vs gpt-oss-20B (high)

Mistral Small 3vsgpt-oss-20B (high)

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

Mistral

Mistral Small 3

Input
$0.075/M
Output
$0.19/M
Speed
154 tok/s
TTFT
0.49s
OpenAI

gpt-oss-20B (high)

Input
$0.05/M
Output
$0.2/M
Speed
256 tok/s
TTFT
0.34s

Winner by Category

Cheaper
gpt-oss-20B (high)
Faster (tok/s)
gpt-oss-20B (high)
Lower Latency
gpt-oss-20B (high)
Benchmarks (1-11)
gpt-oss-20B (high)

Pricing Comparison

MetricMistral Small 3gpt-oss-20B (high)
Input ($/M tokens)$0.075$0.05
Output ($/M tokens)$0.19$0.2
Cost for 1M input + 100K output tokens:
Mistral Small 3$0.09
gpt-oss-20B (high)$0.07

Speed Comparison

Output Speed (tokens/s) — higher is better
Mistral Small 3
154 tok/s
gpt-oss-20B (high)
256 tok/s
Time to First Token (seconds) — lower is better
Mistral Small 3
0.49s
gpt-oss-20B (high)
0.34s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
12.724.5
Coding Index
18.5
Math Index
4.389.3
GPQA Diamond
46.2%68.8%
MMLU-Pro
65.2%74.8%
LiveCodeBench
25.2%77.7%
AIME 2025
4.3%89.3%
MATH-500
71.5%
Humanity's Last Exam
4.1%9.8%
SciCode
23.6%34.4%
IFBench
26.4%65.1%
TerminalBench
10.6%
Mistral Small 31 wins
11 winsgpt-oss-20B (high)

Frequently Asked Questions

Which is cheaper, Mistral Small 3 or gpt-oss-20B (high)?

gpt-oss-20B (high) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.09/M tokens vs $0.10/M for Mistral Small 3.

Which model performs better on benchmarks?

gpt-oss-20B (high) wins 11 out of 12 benchmarks compared to 1 for Mistral Small 3. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-20B (high) generates tokens faster at 256 tok/s vs 154 tok/s. However, gpt-oss-20B (high) has lower time-to-first-token (0.34s vs 0.49s).

When should I use Mistral Small 3 vs gpt-oss-20B (high)?

Choose based on your priorities: gpt-oss-20B (high) for lower cost, gpt-oss-20B (high) for stronger benchmark performance, and gpt-oss-20B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.