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Compare / head-to-head

GPT-5.2vsPhi-4 Reasoning

GPT-5.2 leads 2 of 2 shared benchmarks. GPT-5.2 has the larger context window (400K tokens).

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

Shared benchmarks
2 – 0
GPT-5.2 leads
Cheaper per token
list price, input + output
Larger context
GPT-5.2
400K tokens
Provider uptime (30d)
94.2446% · —
OpenAI · Microsoft
GPT-5.2
OpenAI · released 2025-12-11
textvision
Context
400K
Max out
128K
Input /1M
$1.75
Output /1M
$14
Cached /1M
$0.175
Scores
16 · 11 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-5.2Phi-4 ReasoningΔEdge
Reported by both · 2
GPQA Diamond92.4% 65.8% +26.6 ptGPT-5.2
AIME 2025100% 62.9% +37.1 ptGPT-5.2
Only GPT-5.2 reports · 12
SWE-bench Verified80% not reported
AIME 202698.3% matharenanot reported
LMArena Elo1412.4 not reported
ARC-AGI-1 (Verified)86.2% not reported
ARC-AGI-2 (Verified)52.9% not reported
FrontierMath Tier 4 v2 (Epoch AI run)31.7% epochnot reported
FrontierMath Tiers 1-3 v2 (Epoch AI run)67.4% epochnot reported
GDPval (wins or ties)70.9% not reported
OTIS Mock AIME 2024-2025 (Epoch AI run)96.1% epochnot reported
SimpleQA Verified37.1% epochnot reported
SWE-Bench Pro55.6% not reported
SWE-bench Verified (Epoch AI run)73.8% 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-5.2 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-5.2Phi-4 ReasoningEdge
Context window400K tokens33K tokensGPT-5.2
Max output128K tokens33K tokensGPT-5.2
Input price / 1M$1.75
Output price / 1M$14
Cached input / 1M$0.175
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$15.75
Modalitiestext · visiontextGPT-5.2
Released2025-12-112025-04-30
Cited benchmark scores164
Reliability

Provider status

All providers
Built by Respan
Which one wins on your data?

Public benchmarks are a starting point. Run GPT-5.2 and Phi-4 Reasoning on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.