API Status

GPT-5.5-pro Benchmarks

Provider: openai

Explore real-world latency and throughput results for GPT-5.5-pro. These measurements come from automated benchmarking runs against the provider APIs using the same harness that powers the public cloud dashboard.

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Benchmark Overview

Avg Tokens / Second

11.00

Avg Time to First Token (ms)

27200.00

Runs Analysed

72

Last Updated

May 20, 2026, 11:35 AM

Key Insights

  • GPT-5.5-pro streams at 11.00 tokens/second on average across the last 72 benchmark runs.

  • Performance fluctuated by 22.99 tokens/second (209.0% coefficient of variation), indicating variable behavior across benchmark runs.

  • Average time to first token is 27200.00 ms (high latency), consider alternatives for latency-sensitive workloads.

  • Latest measurements completed on May 20, 2026, 11:35 AM based on 72 total samples.

Performance Distribution

Distribution of throughput measurements showing performance consistency across benchmark runs.

Performance Over Time

Historical performance trends showing how throughput has changed over the benchmarking period.

GPT-5.5-pro

Benchmark Samples

ProviderModelAvg Toks/SecMinMaxAvg TTF (ms)
openaiGPT-5.5-pro11.002.1125.1027200.00

Frequently Asked Questions

The latest rolling average throughput is 11.00 tokens per second with an average time to first token of 27200.00 ms across 72 recent runs.

Benchmarks refresh automatically whenever the monitoring cron runs. The most recent run completed on May 20, 2026, 11:35 AM.

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