Last verified 2025-09-22 (left) · 2025-09-22 (right)
Gemini 2.5 Pro vs o3 — Pricing & Capability Comparison
Gemini 2.5 Pro charges $1.25 per million input tokens and $10.00 per million output tokens. o3 comes in at $2.00 / $8.00. Context windows span 200K vs 200K tokens respectively.
Input price (per 1M)
Gemini 2.5 Pro
$1.25
o3
$2.00
Gemini 2.5 Pro leads here
Output price (per 1M)
Gemini 2.5 Pro
$10.00
o3
$8.00
o3 leads here
Context window
Gemini 2.5 Pro
200,000 tokens
o3
200,000 tokens
Gemini 2.5 Pro leads here
Cached input
Gemini 2.5 Pro
Not published
o3
Not published
No published data
Cost comparison for 10K-token workloads
Side-by-side pricing for identical workloads (10,000 total tokens per request) across different distributions.
| Scenario | Gemini 2.5 Pro | o3 |
|---|---|---|
Balanced conversation 50% input · 50% output | $0.0563 | $0.0500 |
Input-heavy workflow 80% input · 20% output | $0.0300 | $0.0320 |
Generation heavy 30% input · 70% output | $0.0738 | $0.0620 |
Cached system prompt 90% cached input · 10% fresh output | $0.0212 | $0.0260 |
Frequently asked questions
Which model is cheaper per million input tokens?
Gemini 2.5 Pro costs $1.25 per million input tokens versus $2.00 for o3.
How do output prices compare?
o3 charges $8.00 per million output tokens, while Gemini 2.5 Pro costs $10.00 per million.
Which model supports a larger context window?
Gemini 2.5 Pro offers 200,000 tokens (200K) versus 200K for o3.