OpenAI announced GPT-5.5, described as their smartest, faster, and more capable model for complex tasks such as coding, research, and data analysis across tools.

New model

Where to run it

HarveyAvailability change

GPT-5.6 Sol, Now Live in Harvey

OpenAI's GPT-5.6 Sol scores 92.7% on BigLaw Bench, available in Harvey for US customers.

9 Jul

Testing GPT-5.5 in early access: what we are seeing so far

Lovable's evals show GPT-5.5 outperforms GPT-5.4 on complex tasks with fewer tool calls and higher '

Lovable24 Apr

GPT-5.5: Research Preview Results

A first look at GPT-5.5 from Harvey. Today, we're sharing early access results for GPT-5.

Harvey23 Apr

OpenAI Models in OpenClaw, Done Right

OpenClaw adopts Codex runtime for OpenAI agent turns.

OpenClaw14 May

GPT-5.5 In Deep
Amp4 May
OpenAI GPT-5.5 + Codex, now available and fully governed on Databricks
Databricks24 Apr
Databricks partners with OpenAI on GPT-5.5
Databricks23 Apr

How it measures

Artificial Analysis · Intelligence Index · Xhigh

38.477thof 697 models

Coding index74.9 · 28th

Median 12.5Top 57.6

Benchmarks, as Artificial Analysis ran them

94%GPQA Diamond
46%Humanity's Last Exam
15%Terminal-Bench 4.0
84%Terminal-Bench 2.1
61%Terminal-Bench Hard
56%SciCode
94%τ²-Bench
39%τ²-Bench Banking
76%IFBench
84%Long context reasoning

Per 1M tokens: $5.00 in · $30.00 out
Context: 1.1M tokens

LMArena · Text26thof 417

1Gemini 4 Argon (High)
2Muse Wonder (Max)
3Claude Opus 5.5 (High)
4Claude Fable 5 (High)

gpt-5.5-high · 1,481 (1,478–1,485) · 69,401 votes

Rated by versionGPTLevel with GPT-5.4.

GPT-5.5 · 1,481 (1,478–1,485) · 26th

Against list priceRating for the price

GPT-5.5 · 1,481 · $11.25 per 1M tokens ($5.00 in, $30.00 out) · 1.1M context

LMArena, CC BY 4.0, 15 October 2026 · prices OpenRouter, list price blended 3:1, read 22 October 2026 · Artificial Analysis, read 22 October 2026

Everything else, by date

GPT-5.5 Bio Bug Bounty9 Jul
Warp’s big bet on building open source with GPT-5.527 May
Databricks brings GPT-5.5 to enterprise agent workflows15 May
Scaling Trusted Access for Cyber with GPT-5.5 and GPT-5.5-CyberModel update7 May
GPT-5.5 Instant: smarter, clearer, and more personalizedModel update5 May

About the model

Lab: OpenAI
Variant: GPT-5.5 Pro
Released: 23 April 2026, per models.dev
OpenRouter: Listed 24 April 2026openai/gpt-5.5

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