OpenAIGPT-5.5 (xhigh)
- Released
- Apr 23, 2026
- Tracked since
- 2026-07-23
Intelligence index38.4Ranks 57 of 664 models with this metric
Coding index74.9Ranks 28 of 259 models with this metric
Agentic index36.4Ranks 53 of 156 models with this metric
Capability profile
5 axes vs. site averageGPT-5.5 (xhigh)
Site average
Pricing
per 1M tokens- Input
- $5.00
- Output
- $30.00
- Cache read
- $0.500
Performance
- Output throughput
- 105 tokens/sec
- Time to first token
- 69.24s
- First answer token
- 69.24s
- End-to-end response
- 73.98s
History
6Intelligence index
54.8→38.4
Output
Unchanged across 62 days of records
Output throughput
71→105
Cheaper at this level
Models with a comparable intelligence index and a lower output price- Qwen3.8-Flash-Next
AlibabaIntelligence 39.8$0.470−98% - GLM 5.3 Flash
Z AIIntelligence 41.8$0.500−98% - GPT-6 Luna (max)OpenAIIntelligence 37.3$0.500−98%
- MiMo-V2.6-Pro
XiaomiIntelligence 46.3$0.870−97% - DeepSeek V4.1 Flash (Reasoning, Max Effort)
DeepSeekIntelligence 39.5$1.20−96%