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gpt-oss-120bvsPhi-4 Reasoning

gpt-oss-120b leads 2 of 2 shared benchmarks. gpt-oss-120b has the larger context window (131K tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
2 – 0
gpt-oss-120b leads
Cheaper per token
list price, input + output
Larger context
gpt-oss-120b
131K tokens
Provider uptime (30d)
94.2446% · —
OpenAI · Microsoft
gpt-oss-120b
OpenAI · released 2025-08-05
text
Context
131K
Max out
131K
Input /1M
Output /1M
Cached /1M
Scores
6 · 5 core
Phi-4 Reasoning
Microsoft · released 2025-04-30
text
Context
33K
Max out
33K
Input /1M
Output /1M
Cached /1M
Scores
4 · 4 core
Quality

Benchmark matrix

Benchmarkgpt-oss-120bPhi-4 ReasoningΔEdge
Reported by both · 2
GPQA Diamond80.1% 65.8% +14.3 ptgpt-oss-120b
AIME 202590% matharena62.9% +27.1 ptgpt-oss-120b
Only gpt-oss-120b reports · 3
SWE-bench Verified62.4% not reported
LMArena Elo1365.9 not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)88.9% epochnot reported
Only Phi-4 Reasoning reports · 2
MMLU-Pronot reported74.3%
HumanEval+not reported92.9%
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is gpt-oss-120b minus Phi-4 Reasoning in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

Specgpt-oss-120bPhi-4 ReasoningEdge
Context window131K tokens33K tokensgpt-oss-120b
Max output131K tokens33K tokensgpt-oss-120b
Input price / 1M
Output price / 1M
Cached input / 1M
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
ModalitiestexttextTie
Released2025-08-052025-04-30
Cited benchmark scores64
Reliability

Provider status

All providers
More matchups

gpt-oss-120b vs …

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