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  5. Command A+vsGPT-5.4 Nano
Updated Sep 2026

Command A+vsGPT-5.4 Nano

GPT-5.4 Nano is cheaper than Command A+ at $0.2/M vs $0.3/M input tokens.

Command A+ and GPT-5.4 Nano compared across 17 shared prompts
SpecCommand A+GPT-5.4 Nano
Input price$0.3/M tokens$0.2/M tokens
Output price$1.5/M tokens$1.25/M tokens
Context window192K tokens400K tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedSep 2026Mar 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 17 prompts both answered. Formatting stripped, words untouched.

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Command A+2,523 words
A 1920 Transistor: The Ripple Effects Through 1980 The Early Spark – 1920s‑30s What would change? Solid‑state amplifiers appear a quarter‑century earlier. The first practical transistor (likely a point‑contact or junction type) would be patented by the early 1930s, giving radio receivers a tiny, low‑power, reliable…
Read the full answer
GPT-5.4 Nano2,226 words
Below is a counterfactual “timeline-style” trace assuming the first practical transistor (or something functionally equivalent) existed in 1920 and that from then on semiconductor device physics, fabrication know-how, and manufacturing learning proceeded along the easiest path consistent with 1920-era science and…
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

Command A+1,034 words
48-HOUR CRISIS ACTION PLAN: ETHICAL, LEGAL, AND FINANCIAL RISK MANAGEMENT HOURS 0-1: IMMEDIATE ASSESSMENT & CRISIS TEAM ACTIVATION Actions: Activate Crisis Management Team (CMT): CEO, Legal Counsel, Medical Director, Head of Regulatory Affairs, Head of PR, CFO, Head of HR Secure all data related to liver failure cases…
Read the full answer
GPT-5.4 Nano1,825 words
Below is a practical, risk-aware 48-hour plan designed to (1) protect patients immediately, (2) meet likely regulatory expectations even if formal reporting takes months, (3) reduce legal exposure by demonstrating diligence and good faith, and (4) stabilize the market with an ethical, transparent communications…
Read the full answer

Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Command A+1,636 words
Dish Title – “Moonlit Tide” A five‑component, multi‑textural voyage that marries the elemental forces of fire, water, earth, air and the celestial moon. The narrative follows a solitary night on the Japanese coast where the sea’s fire (charred sea urchin) meets the moon’s silver (gold leaf), the water’s whisper…
Read the full answer
GPT-5.4 Nano1,568 words
Michelin-Style Concept: “Midnight Sea & Orchard Smoke” A multi-component tasting dish with an unusual pairing: cuttlefish ink + blood orange + smoked apple wood + seaweed umami—elegant, aromatic, and deliberately “contradictory” (ocean meets orchard, darkness meets brightness).
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Command A+688 words
1‑Month Starter Plan for Better Health & Longevity Focus: Diet   Exercise   Sleep – three pillars that give the biggest bang‑for‑your‑buck. Why These Three? Diet fuels every cell and controls inflammation. Exercise keeps muscles, heart, and brain sharp.
Read the full answer
GPT-5.4 Nano785 words
Here’s a simple, actionable 1‑month plan focused on 3 key areas: food, movement, and sleep/stress. It’s designed for beginners and is intentionally realistic. Overall goal (simple) Each week, build consistency in: Food: more whole foods + fewer “defaults” Exercise: daily movement + 2–3 strength sessions/week Sleep +…
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Command A+1,674 words
This architecture, while functional for a prototype, contains several critical architectural flaws regarding consistency, availability, and scalability. Below is a breakdown of the failure modes, race conditions, and bottlenecks, followed by proposed solutions and their trade-offs.
Read the full answer
GPT-5.4 Nano1,801 words
Below is a structured list of likely failure modes, race conditions, and scaling bottlenecks in your design, with a concrete mitigation and trade-offs for each. (Some issues are “systemic” because the architecture relies on client clocks, per-server WebSockets, polling, and periodic full snapshots.)
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Command A+2,382 words
3‑Month Biohacker Longevity Blueprint Goal: Maximize healthy lifespan, peak physical performance, and cognitive sharpness while building measurable resilience. QUICK‑START SUMMARY (ONE‑PAGE ACTION PLAN) Week Primary Focus Key Supplements (dose & timing) Fasting/Diet Exercise Wearable/HRV Stress/Neuro Lab/Tracking 1‑4…
Read the full answer
GPT-5.4 Nano2,782 words
Below is a comprehensive 3‑month (12‑week) longevity + performance plan designed for a biohacker who wants measurable improvements in longevity markers, physical output, body composition, metabolic health, and cognitive function.
Read the full answer
Our Verdict
Command A+
Command A+
GPT-5.4 Nano
GPT-5.4 Nano

Not enough votes to call it. On the specs, nothing separates them.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Command A+
Input
$0.30
Output
$1.50
GPT-5.4 Nano
Input
$0.20
1.5× cheaper
Output
$1.25
1.2× cheaper

GPT-5.4 Nano is cheaper on both: 1.5× input, 1.2× output.

Where to run it

3 hosts

Command A+1 host
HostInOutContextUptime
Cohere$0.30 in·$1.50 out·192k·99.3% up
GPT-5.4 Nano2 hosts
HostInOutContextUptime
Azure AI Foundry$0.20 in·$1.25 out·400k·100% upOpenAI$0.20 in·$1.25 out·400k·99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Command A+ is developed by Cohere while GPT-5.4 Nano is developed by OpenAI. Command A+ has a 192K token context window vs GPT-5.4 Nano's 400K. You can compare their actual outputs across 17 challenges on Rival to see how they differ in practice.

It depends on your use case. Command A+ and GPT-5.4 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 17 challenges so you can judge which fits your needs best.

Command A+ costs $0.3/M input tokens and GPT-5.4 Nano costs $0.2/M input tokens. GPT-5.4 Nano is $0.10/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Command A+ and GPT-5.4 Nano across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

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Model pages

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