GPT-5.5 Pro
OpenAI · released Apr 30, 2026
Pro-tier GPT-5.5 with extended reasoning and higher compute allocation.
0.0
Podium Score
#647 of 673
—
Arena Elo
60 t/s
Output Speed
$10/M
Output Price
$2.5/M in
1.1M
Context Window
Scores by Source
Category Scores
context90.0
longContext80.0
safety75.0
instruction55.0
intelligence50.0
📚 Knowledge50.0
arena50.0
💻 Coding45.0
🧠 Reasoning45.0
💰 Value45.0
👁️ Multimodal40.0
agents40.0
⚡ Speed40.0
Benchmark Results
Intelligence[object Object]%
Coding[object Object]%
Reasoning[object Object]%
Multimodal[object Object]%
Knowledge[object Object]%
Agents[object Object]%
Safety[object Object]%
Instruction[object Object]%
Value[object Object]%
Speed[object Object]%
Context[object Object]%
LongContext[object Object]%
Arena[object Object]%
Model Details
| Release date | Apr 30, 2026 |
|---|---|
| Parameters | Not disclosed |
| License | Proprietary |
| Context Window | 1,100,000 tokens |
| Input Price | $2.5/M |
| Output Price | $10/M |
| Output Speed | 60 t/s |
| Time to First Token | — |