OpenAI: GPT-5.1-Codex-Max

Public pricingIntelligence 79/100Large memoryविज़नगहरी सोचटूल उपयोग

OpenAI: GPT-5.1-Codex-Max एक मल्टीमॉडल मॉडल है, जिसे कोडिंग, सॉफ्टवेयर इंजीनियरिंग और agent workflows के लिए बनाया गया है। यह multimodal input handling، मजबूत coding प्रदर्शन, 400K tokens का context और संतुलित लागत profile जोड़कर कोडिंग, सॉफ्टवेयर इंजीनियरिंग और agent workflows में भरोसेमंद काम करता है। यह तब व्यावहारिक विकल्प है जब सटीकता, context और नियंत्रण महत्वपूर्ण हो,

Input

$1.25/1M

Output

$10.00/1M

Cached

$0.13/1M

Batch

$0.63/1M

Calculate your GPT-5.1-Codex-Max bill.

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What would GPT-5.1-Codex-Max cost you?

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Technical specifications

GPT-5.1-Codex-Max at a glance.

Memory

400,000

tokens

Max reply

128,000

tokens

Memory tier

Large

an entire book or large codebase

Tokenizer

tiktoken-o200k

Released

Dec 2025

Training cutoff

Jul 2025

Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick GPT-5.1-Codex-Max

  • Multi-step reasoning, research agents, or hard math.
  • Screenshot analysis, image understanding, or document OCR.
  • Agentic workflows that call tools or APIs.
  • Long documents, full codebases, or extensive chat histories.

When to look elsewhere

  • Very latency-sensitive, real-time apps where every millisecond counts.

Alternatives

Similar models to compare.

FAQ

GPT-5.1-Codex-Max — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, GPT-5.1-Codex-Max costs roughly $494 per month. Input is $1.25 /1M tokens and output is $10.00 /1M tokens.
GPT-5.1-Codex-Max has a 400,000-token context window (large memory — an entire book or large codebase). That means you can fit about 75,000 words of input and history in a single call.
Beyond text generation, GPT-5.1-Codex-Max supports understanding images, deep step-by-step reasoning, calling functions / tools, strict JSON output, fine-tuning on your own data. It streams replies by default.
GPT-5.1-Codex-Max was released in December 2025, with training data cut off around July 2025.
Models in a similar class include GPT-5, GPT-5 Codex, GPT-5.1. The "Similar models" section below this FAQ links into each.

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