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OpenAIDiscovered Oct 16, 2026

GPT-5.5

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Provider endpoints0
Benchmark results8
Reasoning
Measured performance

Benchmark results

All leaderboards ↗
LiveBench Overall ↗2.0 · 2026-10-14 (dataset 2026-09-02)
68.7%

Effort: xhigh · single run · equal mean of 7 suites

Independent result
LiveBench Design ↗2.0 · 2026-10-14 (dataset 2026-09-02)
70.3%

Effort: xhigh · single run

Independent result
LiveBench Research ↗2.0 · 2026-10-14 (dataset 2026-09-02)
61.6%

Effort: xhigh · single run

Independent result
LiveBench Browser Use ↗2.0 · 2026-10-14 (dataset 2026-09-02)
48%

Effort: xhigh · single run

Independent result
LiveBench Coding ↗2.0 · 2026-10-14 (dataset 2026-09-02)
85.1%

Effort: xhigh · single run

Independent result
LiveBench Agentic ↗2.0 · 2026-10-14 (dataset 2026-09-02)
44.6%

Effort: xhigh · single run

Independent result
LiveBench Data Analysis ↗2.0 · 2026-10-14 (dataset 2026-09-02)
81.6%

Effort: xhigh · single run

Independent result
LiveBench Reasoning ↗2.0 · 2026-10-14 (dataset 2026-09-02)
89.7%

Effort: xhigh · single run

Independent result
Access & cost

Prices across providers

0 quotes

No listed provider price

LiveBench ↗

Model specifications

Developer
OpenAI
Modality
Language
Context
Not reported
Maximum output
Not reported
Weights
Not reported
First discovered
Oct 16, 2026

Exact identities

  • livebenchgpt-5.5

Sources

LiveBench ↗

Updated Oct 17, 2026

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