ModelsCompareBest forBenchmarksStatusPricingAPI
Compare / head-to-head

Command A ReasoningvsGPT-5.1

GPT-5.1 leads 1 of 1 shared benchmark. GPT-5.1 has the larger context window (400K tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
0 – 1
GPT-5.1 leads
Cheaper per token
list price, input + output
Larger context
GPT-5.1
400K tokens
Provider uptime (30d)
100% · 94.7883%
Cohere · OpenAI
Command A Reasoning
Cohere · released 2025-08-21
text
Context
256K
Max out
32K
Input /1M
Output /1M
Cached /1M
Scores
5 · 1 core
GPT-5.1
OpenAI · released 2025-11-13
textvision
Context
400K
Max out
128K
Input /1M
$1.25
Output /1M
$10
Cached /1M
$0.125
Scores
6 · 6 core
Quality

Benchmark matrix

BenchmarkCommand A ReasoningGPT-5.1ΔEdge
Reported by both · 1
AIME 202557% 94.2% matharena-37.2 ptGPT-5.1
Only Command A Reasoning reports · 4
IFBench36% not reported
SciCode30% not reported
Tau2-bench Telecom37% not reported
Terminal-Bench Hard3% not reported
Only GPT-5.1 reports · 5
GPQA Diamondnot reported87.6% epoch
LMArena Elonot reported1422.6
OTIS Mock AIME 2024-2025 (Epoch AI run)not reported88.6% epoch
SimpleQA Verifiednot reported48% epoch
SWE-bench Verified (Epoch AI run)not reported68% epoch
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Command A Reasoning minus GPT-5.1 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecCommand A ReasoningGPT-5.1Edge
Context window256K tokens400K tokensGPT-5.1
Max output32K tokens128K tokensGPT-5.1
Input price / 1M$1.25
Output price / 1M$10
Cached input / 1M$0.125
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$11.25
Modalitiestexttext · visionGPT-5.1
Released2025-08-212025-11-13
Cited benchmark scores56
Reliability

Provider status

All providers
More matchups

Command A Reasoning vs …

Built by Respan
Which one wins on your data?

Public benchmarks are a starting point. Run Command A Reasoning and GPT-5.1 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.