GPT-5.5
Official information
- Release date
- Apr 23, 2026
- Official model ID
- gpt-5.5
- Vendor source
- GPT-5.5
- Identity verified
- Aug 13, 2026
API pricing
- Verification
- Retained last valid price
- Verified at
- Value benchmark tier
- Fixed USD rate
| Tier / region | Input / output · per MTok | Context pricing tier | Billing | Validity | Source |
|---|---|---|---|---|---|
| Fixed USD rate | $5 / $30 | — | PAYG | — | Official rates |
Rankings by category
Overall
#7High 0.9178.1
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| Epoch AI | 82.7 | 159.7 | Single config |
| LiveBench | 85.9 | 80.8 | Single config |
| LMArena | 65.7 | 1469.2 | Median of 2 configs |
Cross-source percentile spread 20.2
Coding
#16High 0.7962.3
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| DeepSWE | 68.8 | 59.2 | Median of 4 configs |
| LiveBench | 70.7 | 65.3 | Single config |
| LMArenatext-coding | 61.8 | 1488.8 | Median of 2 configs |
| · webdev | 33.0 | 1487.0 | Median of 3 configs |
Cross-source percentile spread 23.3
Agent
#14High 0.7658.5
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| Agents' Last Exam | 48.2 | 42.1 | Median of 5 configs |
| DeepSWE | 68.8 | 59.2 | Median of 4 configs |
Cross-source percentile spread 20.5
Reasoning
#25Medium 0.7457.2
| Source | Percentile | Raw score | Config folding |
|---|---|---|---|
| Epoch AI | 15.6 | 0.8 | Median of 2 configs |
| LiveBench | 81.5 | 92.8 | Single config |
| LMArenatext-math | 69.6 | 1483.0 | Median of 2 configs |
| · text-hard | 79.4 | 1487.4 | Median of 2 configs |
Cross-source percentile spread 65.9
Value
#37High 0.9122.8
Aliases & configurations
- gpt-5-5
- gpt-5-5-codex-harness· codex harness
- gpt-5-5-high· high
- gpt-5-5-high-codex-harness· high / codex harness
- gpt-5-5-xhigh· xhigh
- gpt-5-5-xhigh-codex-harness· xhigh / codex harness