GPT 5.2 vs o3-mini (2025-01-31)

GPT 5.2 vs o3-mini (2025-01-31): o3-mini (2025-01-31) is cheaper by 69% on average. GPT 5.2 from Azure OpenAI (272,000-token context, reasoning, tool calls) vs. o3-mini (2025-01-31) from OpenAI (200,000-token context, reasoning, tool calls). Use Agent Command Center to A/B both in shadow mode and pick the winner per workload.

Side-by-side cost

Live workload comparison

Same workload run through both models. The cheaper one is highlighted.

3,000
0272,000
400
0128,000
5,000
01,000,000
Azure OpenAI
$1,651/mo
Input $1.75/M · Output $14.00/M
OpenAI
$770/mo
Input $1.10/M · Output $4.40/M
At this workload, o3-mini (2025-01-31) is 53% cheaper than GPT 5.2 — a savings of $881/month ($10,574/year).
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
  model: o3-mini-2025-01-31
  provider: openai
fallback:
  model: gpt-5-2
  provider: azure-openai
shadow: { sample_rate: 0.05 }   # mirror 5% of traffic to compare quality live
GPT 5.2 o3-mini (2025-01-31)
Input price $1.75/M $1.10/M
Output price $14.00/M $4.40/M
Context window 272,000 200,000
Max output 128,000 100,000
Function calling
Vision
Audio input
Reasoning
Prompt caching
Structured output
Pricing verified May 12, 2026 May 12, 2026
Cheaper option
~69% cheaper than GPT 5.2
Larger context
272,000 tokens
More capabilities
5 of 6 capability flags advertised

Benchmark comparison

Side-by-side public benchmark scores. Greener bar = winner.

Chatbot Arena ELOgeneral
GPT 5.2
1,477
o3-mini (2025-01-31)
AIME 2025math
GPT 5.2
100.0%
o3-mini (2025-01-31)
GPQA Diamondreasoning
GPT 5.2
92.4%
o3-mini (2025-01-31)
MMLUgeneral
GPT 5.2
89.6%
o3-mini (2025-01-31)
ARC-AGIreasoning
GPT 5.2
86.2%
o3-mini (2025-01-31)
SWE-bench Verifiedagent
GPT 5.2
80.0%
o3-mini (2025-01-31)
MMMU-Promultimodal
GPT 5.2
79.5%
o3-mini (2025-01-31)
ARC-AGI-2reasoning
GPT 5.2
52.9%
o3-mini (2025-01-31)
FrontierMathmath
GPT 5.2
40.3%
o3-mini (2025-01-31)
Humanity's Last Examreasoning
GPT 5.2
34.5%
o3-mini (2025-01-31)