GPT-5.5 (batch)
OpenAI · Multimodal · Released Apr 2026
OpenAI's frontier model for complex professional workloads, featuring a 1M+ token context window with multimodal input and native computer use capabilities.
- Strengths
- Delivers strong reasoning, high reliability, and improved token efficiency on difficult tasks compared to its predecessors.
- Best for
- Long-context professional applications requiring reliable reasoning and complex multi-step problem solving, where reasoning depth is the priority.
- Limitations
- Superseded by GPT-5.6 series models released in July 2026, which offer improved performance; GPT-5.5 Pro is the higher-accuracy variant for reasoning-heavy work.
Input / 1M
$2.50
Output / 1M
$15.00
Cached input / 1M
$0.25
Context window
1.05M
Price history
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 28 Jul 2026 | $2.50 | $15.00 | $0.25 | Imported from OpenRouter | openrouter.ai |