GPT-5.1-codex-mini Benchmarks

Provider: openai

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

21.00

Avg Time to First Token (ms)

1030.00

Runs Analysed

218

Last Updated

Feb 8, 2026, 09:01 PM

Key Insights

  • GPT-5.1-codex-mini streams at 21.00 tokens/second on average across the last 218 benchmark runs.

  • Performance fluctuated by 43.19 tokens/second (205.7% coefficient of variation), indicating variable behavior across benchmark runs.

  • Average time to first token is 1030.00 ms (moderate latency), consider alternatives for latency-sensitive workloads.

  • Latest measurements completed on Feb 8, 2026, 09:01 PM based on 218 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-mini

Benchmark Samples

ProviderModelAvg Toks/SecMinMaxAvg TTF (ms)
openaiGPT-5.1-codex-mini21.001.3144.501030.00

Frequently Asked Questions

The latest rolling average throughput is 21.00 tokens per second with an average time to first token of 1030.00 ms across 218 recent runs.

Benchmarks refresh automatically whenever the monitoring cron runs. The most recent run completed on Feb 8, 2026, 09:01 PM.

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