OpenAIProvisional

GPT-5.5

GPT-5.5 / Default · gpt-5.5

OpenAI flagship model for complex reasoning, coding, and professional agent workflows.

Objective score

35.6

Confidence

79%

Price evidence

$2.50 input / $15 output per 1M tokens

Support this model Compare trend Official source

Scenario evidence

Six task-specific rankings

Feature development#34Obj. 35.60 · 0%Debug and repair#16Obj. 560 · 0%Refactoring#14Obj. 560 · 0%Code review#14Obj. 58.10 · 0%Large-repo agent work#37Obj. 30.30 · 0%Frontend / UI#14Obj. 560 · 0%

Evidence state

Signal coverage

Benchmarks: 2
Rank points: 7
Usage: 2
Agent: 0
Sources: 6

Objective evidence

Benchmarks and public signals

Swebench: —
Livecodebench: —
Aider: —
Artificial Analysis: 74.9
Openrouter Usage: 0.6
Kilo Usage: —

Persistent history

Recent ranking points

Aug 1#29 · 38

Aug 1#29 · 38

Jul 31#30 · 38

Jul 31#30 · 38

Jul 31#30 · 38

Jul 31#30 · 38

Usage signals

OpenRouter0.6%

Overall0.4%

Agent and tool signals

Evidence is being collected. Missing data is not treated as zero.

Source trail

OpenAI model catalog recommends GPT-5.5 for complex reasoning and coding.Artificial Analysis Coding Agents · ok WebDev Arena · ok Kilo leaderboard · ok Kimi K2.7 Code model card · ok NVIDIA Nemotron 3 Ultra model card · ok LongCat 2.0 model card · ok