Compare/Solar Open 100B (Reasoning) vs gpt-oss-120B (high)

Solar Open 100B (Reasoning)vsgpt-oss-120B (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-120B (high)

Input
$0.15/M
Output
$0.6/M
Speed
235 tok/s
TTFT
0.50s

Winner by Category

Cheaper
Solar Open 100B (Reasoning)
Faster (tok/s)
gpt-oss-120B (high)
Lower Latency
Solar Open 100B (Reasoning)
Benchmarks (0-11)
gpt-oss-120B (high)

Pricing Comparison

MetricSolar Open 100B (Reasoning)gpt-oss-120B (high)
Input ($/M tokens)$0$0.15
Output ($/M tokens)$0$0.6
Cost for 1M input + 100K output tokens:
Solar Open 100B (Reasoning)$0.00
gpt-oss-120B (high)$0.21

Speed Comparison

Output Speed (tokens/s) — higher is better
Solar Open 100B (Reasoning)
gpt-oss-120B (high)
235 tok/s
Time to First Token (seconds) — lower is better
Solar Open 100B (Reasoning)
gpt-oss-120B (high)
0.50s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
21.733.3
Coding Index
10.528.6
Math Index
93.4
GPQA Diamond
65.7%78.2%
MMLU-Pro
80.8%
LiveCodeBench
87.8%
AIME 2025
93.4%
MATH-500
Humanity's Last Exam
9.2%18.5%
SciCode
26.9%38.9%
IFBench
57.7%69.0%
TerminalBench
2.3%23.5%
Solar Open 100B (Reasoning)0 wins
11 winsgpt-oss-120B (high)

Frequently Asked Questions

Which is cheaper, Solar Open 100B (Reasoning) or gpt-oss-120B (high)?

Solar Open 100B (Reasoning) is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $0.26/M for gpt-oss-120B (high).

Which model performs better on benchmarks?

gpt-oss-120B (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-120B (high) generates tokens faster at 235 tok/s vs 0 tok/s. Solar Open 100B (Reasoning) also has lower time-to-first-token (0.00s vs 0.50s).

When should I use Solar Open 100B (Reasoning) vs gpt-oss-120B (high)?

Choose based on your priorities: Solar Open 100B (Reasoning) for lower cost, gpt-oss-120B (high) for stronger benchmark performance, and gpt-oss-120B (high) for faster generation. For latency-sensitive apps, check the TTFT comparison above.