Is GPT-5.5 out yet?
Yes.
About GPT-5.5
OpenAI's spring 2026 flagship, near the top of the LM Arena board at launch.
How we confirmed it
Released via official access
April 23, 2026 at 12:00 AM UTC
Release timeline
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Benchmarks
Agentic#18
GPT-5.5 Pro · via BenchLM.ai · captured Aug 16, 2026 · source
61.06
FrontierCode Diamond
GPT-5.5 · via Epoch AI · captured Jul 24, 2026 · source
6.3
GDP.pdf
GPT-5.5 (xHigh reasoning) · via Epoch AI · captured Aug 16, 2026 · source
25
LM Arena#21
gpt-5.5 · via LM Arena · 56,736 votes · captured Aug 16, 2026 · source
1476.6692460957795
MultimodalGrounded#13
GPT-5.5 · via BenchLM.ai · captured Aug 16, 2026 · source
68.3
Coding#8
GPT-5.5 · via BenchLM.ai · captured Aug 16, 2026 · source
71
Knowledge#13
GPT-5.5 · via BenchLM.ai · captured Aug 16, 2026 · source
79.3
InstructionFollowing#17
GPT-5.5 · via BenchLM.ai · captured Jul 21, 2026 · source
85.7
ExploitBench
GPT 5.5 · via Epoch AI · captured Aug 16, 2026 · source
41.8
Sourced metrics mirrored with attribution - not community sentiment.
Data from BenchLM.ai.
Data from Epoch AI, “AI Benchmarking Hub” (CC BY 4.0).
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Model Pulse
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Community consensus
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Compare GPT-5.5 with another model →
Also waiting on: Gemini 3.5 Pro, Claude Fable 5.1, Claude Mythos 5.1, GLM-6
Comments
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