Compare/Devstral 2 vs gpt-oss-20B (low)

Devstral 2vsgpt-oss-20B (low)

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

Mistral

Devstral 2

Input
$0/M
Output
$0/M
Speed
49 tok/s
TTFT
0.61s
OpenAI

gpt-oss-20B (low)

Input
$0.06/M
Output
$0.2/M
Speed
280 tok/s
TTFT
0.45s

Winner by Category

Cheaper
Devstral 2
Faster (tok/s)
gpt-oss-20B (low)
Lower Latency
gpt-oss-20B (low)
Benchmarks (4-7)
gpt-oss-20B (low)

Pricing Comparison

MetricDevstral 2gpt-oss-20B (low)
Input ($/M tokens)$0$0.06
Output ($/M tokens)$0$0.2
Cost for 1M input + 100K output tokens:
Devstral 2$0.00
gpt-oss-20B (low)$0.08

Speed Comparison

Output Speed (tokens/s) — higher is better
Devstral 2
49 tok/s
gpt-oss-20B (low)
280 tok/s
Time to First Token (seconds) — lower is better
Devstral 2
0.61s
gpt-oss-20B (low)
0.45s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
22.020.8
Coding Index
23.714.4
Math Index
36.762.3
GPQA Diamond
59.4%61.1%
MMLU-Pro
76.2%71.8%
LiveCodeBench
44.8%65.2%
AIME 2025
36.7%62.3%
MATH-500
Humanity's Last Exam
3.6%5.1%
SciCode
33.1%34.0%
IFBench
38.1%57.8%
TerminalBench
18.9%4.5%
Devstral 24 wins
7 winsgpt-oss-20B (low)

Frequently Asked Questions

Which is cheaper, Devstral 2 or gpt-oss-20B (low)?

Devstral 2 is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.10/M for gpt-oss-20B (low).

Which model performs better on benchmarks?

gpt-oss-20B (low) wins 7 out of 12 benchmarks compared to 4 for Devstral 2. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

gpt-oss-20B (low) generates tokens faster at 280 tok/s vs 49 tok/s. However, gpt-oss-20B (low) has lower time-to-first-token (0.45s vs 0.61s).

When should I use Devstral 2 vs gpt-oss-20B (low)?

Choose based on your priorities: Devstral 2 for lower cost, gpt-oss-20B (low) for stronger benchmark performance, and gpt-oss-20B (low) for faster generation. For latency-sensitive apps, check the TTFT comparison above.