GPT-4 Turbo vs GPT-5.3 Codex

Compare OpenAI and OpenAI AI models

OpenAI

GPT-4 Turbo

OpenAI

GPT-5.3 Codex

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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

GPT-4 Turbo

Per Request:$0.025

Daily:$2.50

Monthly:$75.00

Yearly:$912.50

GPT-5.3 Codex

Per Request:$0.008750

Daily:$0.875

Monthly:$26.25

Yearly:$319.375

Cost Differences

$0.01625

Per Request

$1.625

Daily

$48.75

Monthly

$593.125

Yearly

GPT-5.3 Codex costs less than GPT-4 Turbo

Feature Comparison

Feature	GPT-4 Turbo	GPT-5.3 Codex
Provider	OpenAI	OpenAI
Input Price	$10.00/1M tokens	$1.75/1M tokens
Output Price	$30.00/1M tokens	$14.00/1M tokens
Context Window	128,000 tokens	256,000 tokens
Max Output	4,096 tokens	32,768 tokens
Category	flagship	coding
Capabilities	textvisioncode	textcode
Release Date	4/9/2024	3/1/2026

GPT-4 Turbo vs GPT-5.3 Codex: Which Should You Choose?

Choosing between GPT-4 Turbo and GPT-5.3 Codex depends on your priorities: cost efficiency, context length, or raw capability. GPT-5.3 Codex is the more affordable option at $1.75/1M input tokens — 83% cheaper than GPT-4 Turbo. Meanwhile, GPT-5.3 Codex offers a significantly larger context window at 256,000 tokens vs 128,000 for GPT-4 Turbo.

These models target different tiers: GPT-4 Turbo is a flagship model while GPT-5.3 Codex is coding. This means they're optimized for different workloads. GPT-4 Turbo is built for complex tasks that require deeper reasoning, while GPT-5.3 Codex offers better value for routine operations.

Output costs matter too. GPT-4 Turbo charges $30.00/1M output tokens vs $14.00 for GPT-5.3 Codex. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. GPT-5.3 Codex has the edge here at $14.00/1M output tokens.

Multimodal capabilities: GPT-4 Turbo supports vision (image inputs) while GPT-5.3 Codex is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose GPT-4 Turbo when:

• You need more capabilities (vision)
• You're already using OpenAI's API ecosystem

Choose GPT-5.3 Codex when:

• Budget is a primary concern
• You need a larger context window (256,000 tokens)
• You need longer outputs (up to 32,768 tokens)
• You're already using OpenAI's API ecosystem

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

GPT-4 Turbo (OpenAI)

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GPT-5.3 Codex (OpenAI)

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Frequently Asked Questions

Which is cheaper, GPT-4 Turbo or GPT-5.3 Codex?▼

GPT-5.3 Codex is cheaper for input tokens at $1.75 per million tokens vs $10.00 for GPT-4 Turbo — that's 83% savings on input costs.

What is the context window difference between GPT-4 Turbo and GPT-5.3 Codex?▼

GPT-4 Turbo supports 128,000 tokens while GPT-5.3 Codex supports 256,000 tokens — a difference of 128,000 tokens in favor of GPT-5.3 Codex.

Which model is better for AI Chatbot?▼

Both models support text. For ai chatbot, GPT-5.3 Codex is the lower-cost option, while GPT-5.3 Codex offers a larger context window (256,000 vs 128,000 tokens). Choose GPT-5.3 Codex for budget sensitivity or GPT-5.3 Codex for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, GPT-4 Turbo costs about $75.00/month and GPT-5.3 Codex costs about $26.25/month. Overall, GPT-5.3 Codex has lower combined input + output rates ($1.75 in, $14.00 out) vs GPT-4 Turbo.