Compare/Solar Open 100B (Reasoning) vs gpt-oss-20B (high)

Solar Open 100B (Reasoning)vsgpt-oss-20B (high)

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

Upstage

Solar Open 100B (Reasoning)

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

gpt-oss-20B (high)

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

Winner by Category

Cheaper
Solar Open 100B (Reasoning)
Faster (tok/s)
gpt-oss-20B (high)
Lower Latency
Solar Open 100B (Reasoning)
Benchmarks (0-11)
gpt-oss-20B (high)

Pricing Comparison

MetricSolar Open 100B (Reasoning)gpt-oss-20B (high)
Input ($/M tokens)$0$0.05
Output ($/M tokens)$0$0.2
Cost for 1M input + 100K output tokens:
Solar Open 100B (Reasoning)$0.00
gpt-oss-20B (high)$0.07

Speed Comparison

Output Speed (tokens/s) — higher is better
Solar Open 100B (Reasoning)
gpt-oss-20B (high)
256 tok/s
Time to First Token (seconds) — lower is better
Solar Open 100B (Reasoning)
gpt-oss-20B (high)
0.34s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
21.724.5
Coding Index
10.518.5
Math Index
89.3
GPQA Diamond
65.7%68.8%
MMLU-Pro
74.8%
LiveCodeBench
77.7%
AIME 2025
89.3%
MATH-500
Humanity's Last Exam
9.2%9.8%
SciCode
26.9%34.4%
IFBench
57.7%65.1%
TerminalBench
2.3%10.6%
Solar Open 100B (Reasoning)0 wins
11 winsgpt-oss-20B (high)

Frequently Asked Questions

Which is cheaper, Solar Open 100B (Reasoning) or gpt-oss-20B (high)?

Solar Open 100B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.09/M for gpt-oss-20B (high).

Which model performs better on benchmarks?

gpt-oss-20B (high) wins 11 out of 12 benchmarks compared to 0 for Solar Open 100B (Reasoning). 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 0 tok/s. Solar Open 100B (Reasoning) also has lower time-to-first-token (0.00s vs 0.34s).

When should I use Solar Open 100B (Reasoning) vs gpt-oss-20B (high)?

Choose based on your priorities: Solar Open 100B (Reasoning) 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.