GPT 5.2 vs o3
GPT 5.2 vs o3: o3 is cheaper by 43% on average. GPT 5.2 from Azure OpenAI (272,000-token context, reasoning, tool calls) vs. o3 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
At this workload, o3 is 15% cheaper than GPT 5.2 — a savings of $251/month ($3,013/year).
Crossover: GPT 5.2 is cheaper when output/input ≤ 0.04 (input-heavy workloads — RAG, retrieval). o3 wins above (long-form generation).
Current workload ratio: 0.13 (400/3000)
Production recipe — Agent Command Center
strategy: cost-optimized
primary:
model: o3
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 | |
|---|---|---|
| Input price | $1.75/M | $2.00/M |
| Output price | $14.00/M | $8.00/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 |
Benchmark comparison
Side-by-side public benchmark scores. Greener bar = winner.