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GPT-5.5
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Tool use · Reasoning
Overview
Pricing
Evaluations
Evaluation overview
Overall rank
#4
92.6 points · 180 models
Research rank
#1
100 points · 174 models
Data coverage
183 items
19 sources · updated through 2026-07-17
Domain performance
Coding
#7 / 160
91.9
Research
#1 / 174
100
Agents
#5 / 125
92.7
Vision
#6 / 65
93.7
Long context
#5 / 82
89.3
Evaluation highlights
All evaluations
Arena Agent Bash Recovery
Agents · Arena.ai Agent · xHigh mode
14.5%
1
/ 31
Arena Text Rating
Reasoning · Arena.ai Text · High mode
1,482.3Elo
12
/ 354
Arena Vision Rating
Multimodal · Arena.ai Vision · High mode
1,286.43Elo
6
/ 121
SWE-bench Verified
Coding · Hy3 Hugging Face README
84.4%
3
/ 60
IFEval
Instruction following · LongCat-2.0 Technical Report
95%
2
/ 30
CL-bench life
Long context · Hy3 Hugging Face README
21.1%
1
/ 11
Basic information
Context (input / output)
1.1M / 128K
Release date
2026-04
Input modalities
Text · Image
Output modalities
Text
Availability
OpenAI
Full pricing
Input
$5 /1M
Output
$30 /1M
Related links
Official site
Version relationships
GPT-5.5 family
GPT-5.5
Current
2026-04 · Current model
GPT-5.5 Pro
2026-04 · Same series
GPT-5.5 Instant
2026-05 · Same series
Runtime modes
High · xHigh