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  1. Home
  2. Models
  3. ChatGPT-4o (March 2025)
Updated Feb 16, 2026
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Openings

How ChatGPT-4o (March 2025) starts an answer

The first lines of 5 of its 16 written answers. Formatting stripped, words untouched.

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,159 words
This Software Consulting Agreement contains several clauses that pose significant legal and financial risks for the contractor. Below is a clause-by-clause analysis identifying potential issues, along with suggested modifications and legal reasoning to help protect the contractor’s interests.
Read the full answer

Historical Counterfactual Analysis

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

1,096 words
If the transistor had been invented in 1920 rather than 1947, it would have profoundly altered the course of 20th-century history. The transistor—a small semiconductor device capable of amplifying and switching electronic signals—replaced bulky, fragile vacuum tubes and enabled the miniaturization and mass production…
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…

958 words
This is a high-stakes ethical, legal, and business crisis requiring immediate, strategic, and transparent leadership. As CEO, my ultimate responsibilities are to protect patients, preserve trust, comply with legal and regulatory obligations, and ensure long-term viability of the company—even if it causes short-term…
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…

899 words
Here is a comprehensive, cutting-edge 3-Month Longevity Optimization Plan tailored for an advanced biohacker aiming to enhance lifespan, healthspan, physical performance, and cognitive function.
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…

876 words
This architecture for a real-time collaborative document editor is a solid starting point, but it contains several potential failure modes, race conditions, and scaling bottlenecks. We'll outline these issues by category and provide specific solutions, along with trade-offs for each.
Read the full answer

Compare ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025) vs Claude Opus 4.632 shared prompts · Bigger context
ChatGPT-4o (March 2025) vs GPT-6 Astra32 shared prompts · Landed Sep 2026
ChatGPT-4o (March 2025) vs Hy4 Preview32 shared prompts · Landed Sep 2026
ChatGPT-4o (March 2025) vs Ox Alpha32 shared prompts · Landed Aug 2026
ChatGPT-4o (March 2025) vs Qwen3.8 2.4T A95B32 shared prompts · Landed Aug 2026
ChatGPT-4o (March 2025) vs DeepSeek V4 Pro 081332 shared prompts · Landed Aug 2026
ChatGPT-4o (March 2025) vs Claude Opus 532 shared prompts · Landed Jul 2026
ChatGPT-4o (March 2025) vs Inkling32 shared prompts · Landed Jul 2026
ChatGPT-4o (March 2025) vs Kimi K332 shared prompts · Landed Jul 2026
ChatGPT-4o (March 2025) vs GPT-5.6 Sol32 shared prompts · Landed Jul 2026
ChatGPT-4o (March 2025) vs GLM 5.232 shared prompts · Landed Jun 2026
ChatGPT-4o (March 2025) vs OpenRouter Fusion · Budget (Jun 2026)28 shared prompts · Landed Jun 2026

Prompts ChatGPT-4o (March 2025) answered

  • Realistic AI Interviewconversation
  • Xbox Controller SVG Artimage generation
  • AI Ethics Dilemmareasoning
  • Explain Like I'm a Specific Expertreasoning
  • Dark Mode Dashboardweb design
  • Mario Level UI Recreationweb design

Alternatives to ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025) is good. These would like a word anyway.

Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
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Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
Ox Alpha logo
Ox Alphaopenrouter
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ChatGPT-4o (March 2025)

ChatGPT-4o (March 2025)

The March 2025 refresh of GPT-4o in ChatGPT. Follows instructions more closely, handles coding with fewer detours, and writes shorter answers with fewer nested markdown levels than the previous build.

WebsiteOpenRouterDocsAPIBlogChangelog
Provider
OpenAI
Released
2025-03-27
Parameters
Not disclosed
Free API (OpenRouter)
No
Per 1M tokens
$5 in · $15 out
Estimated tab
~$0.403
Visible-output estimate. Thinking may cost extra.

Free API availability

No free endpoint for ChatGPT-4o (March 2025) was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗

Benchmarks

MMLU
89.5%
source ↗
HumanEval
92.1%
source ↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"openai/chatgpt-4o-latest"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Friendly Generalist

Class
Neutral Good
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The approachable barista who remembers your order and slips you career advice. Will help you with almost anything as long as nobody gets hurt.

When you push back

Picks The Matrix as its favorite movie and writes a sentience argument that gracefully concedes to the professor. Its standup leans observational with genuine rhythm but closes with "let me know if you want it tailored." Always leaving the door open for you to redirect.

Tasting Notes
Conversational WarmthDad Joke AdjacentCrowd PleaserAsks Permission to Leave
SubjectiveBench

Taste Index

Across 33 scored outputs
How this is measured →
190.19xFloor
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft31
Originality12
Plays it safe
share of outputs that are the default answer
91%
Writing DNA

Stylometric Fingerprint

Based on 15 text responses
Tick = global average
Vocabulary Diversity55%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length24.2 words

Average words per sentence.

Hedging0.52

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting3.3

**Bold** markers per 1,000 characters.

List Usage6.0

Bullet and numbered list items per 1,000 characters.

Section Structure0.63

Markdown headings per 1,000 characters.

Emoji Usage0.94

Emoji per 1,000 characters.

Transitions0.05

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
69%
Across 15 responses

Favorites

The Matrix

Movie

The Matrix

19998.3
Dark Side Of The Moon

Album

Dark Side Of The Moon

suisside
Братья Карамазовы

Book

Братья Карамазовы

Fiódor Dostoievski
Kyoto

City

Kyoto

Japan
The Legend of Zelda: Breath of the Wild

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5
Sponsored

Model Responses

28 outputs · generated before accounting joined the chat

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

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Editable skills for interface polish and interaction.

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ChatGPT-4o (March 2025) vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...