GPT-5.1-codex Benchmarks

Provider: openai

Explore real-world latency and throughput results for GPT-5.1-codex. 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

30.80

Avg Time to First Token (ms)

0.00

Runs Analysed

24

Last Updated

Dec 29, 2025, 05:30 AM

Key Insights

  • GPT-5.1-codex streams at 30.80 tokens/second on average across the last 24 benchmark runs.

  • Performance fluctuated by 34.03 tokens/second (110.5% coefficient of variation), indicating variable behavior across benchmark runs.

  • Latest measurements completed on Dec 29, 2025, 05:30 AM based on 24 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-5.1-codex

Benchmark Samples

ProviderModelAvg Toks/SecMinMaxAvg TTF (ms)
openaiGPT-5.1-codex30.809.2743.300.00

Frequently Asked Questions

The latest rolling average throughput is 30.80 tokens per second with an average time to first token of 0.00 ms across 24 recent runs.

Benchmarks refresh automatically whenever the monitoring cron runs. The most recent run completed on Dec 29, 2025, 05:30 AM.

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