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Claude 4 vs GPT-5: The Complete Pricing Guide

Anthropic's Claude 4 and OpenAI's GPT-5 represent the cutting edge of large language models. Both offer significant leaps in reasoning, code generation, and multi-modal capabilities — but they come with very different price tags. Here's everything you need to know to choose the right one for your budget.

Pricing at a Glance

As of April 2026:

• Claude 4 (Opus): $15.00 per 1M input tokens, $75.00 per 1M output tokens
• Claude 4 (Sonnet): $3.00 per 1M input tokens, $15.00 per 1M output tokens
• GPT-5: $1.25 per 1M input tokens, $10.00 per 1M output tokens
• GPT-5 mini: $0.25 per 1M input tokens, $2.00 per 1M output tokens

GPT-5 sits between Claude 4 Opus and Sonnet on price, while GPT-5 mini offers a compelling budget alternative.

Context Window Comparison

Context window size directly impacts what you can do with each model:

• Claude 4: 200,000 tokens (200K)
• GPT-5: 272,000 tokens (272K)

GPT-5 has a 28% larger context window, which matters for document analysis, codebase understanding, and long conversations. However, Claude 4's 200K window is sufficient for most use cases.

Cost Per Request: Real Workloads

Let's compare costs across three common use cases:

1. Customer Support Chatbot

Typical request: 1,500 input tokens, 400 output tokens

• Claude 4 Opus: $0.0525 per request
• Claude 4 Sonnet: $0.0105 per request
• GPT-5: $0.0270 per request
• GPT-5 mini: $0.0012 per request

At 5,000 requests/day (150K/month):

• Claude 4 Opus: $7,875/month
• Claude 4 Sonnet: $1,575/month
• GPT-5: $4,050/month
• GPT-5 mini: $180/month

For chatbots, GPT-5 mini is the clear winner at 22x cheaper than GPT-5 and 9x cheaper than Claude Sonnet.

2. Code Generation

Typical request: 3,000 input tokens, 2,000 output tokens

• Claude 4 Opus: $0.195 per request
• Claude 4 Sonnet: $0.039 per request
• GPT-5: $0.090 per request
• GPT-5 mini: $0.0044 per request

At 1,000 requests/day (30K/month):

• Claude 4 Opus: $5,850/month
• Claude 4 Sonnet: $1,170/month
• GPT-5: $2,700/month
• GPT-5 mini: $132/month

Code generation is output-heavy, so the cost gap widens. Claude 4 Sonnet offers the best quality-to-cost ratio for complex code tasks.

3. Document Analysis

Typical request: 50,000 input tokens, 1,000 output tokens

• Claude 4 Opus: $0.825 per request
• Claude 4 Sonnet: $0.165 per request
• GPT-5: $0.530 per request
• GPT-5 mini: $0.036 per request

For long-document workloads, input tokens dominate the cost. Claude 4 Sonnet is 69% cheaper than GPT-5 for this use case.

Quality vs. Cost: When Does Premium Pay Off?

Raw pricing only tells part of the story. The models differ in key quality dimensions:

Reasoning & Analysis

Claude 4 Opus leads on complex multi-step reasoning, nuanced analysis, and tasks requiring deep domain knowledge. If your application involves financial analysis, legal document review, or scientific research, the premium may be justified.

Code Generation

Claude 4 Sonnet and GPT-5 are closely matched on code quality. Claude tends to produce cleaner, more maintainable code; GPT-5 is faster at scaffolding and boilerplate. For production code, the quality difference often justifies the cost.

Creative Writing

Claude 4 Opus produces more natural, nuanced prose. GPT-5 is more consistent but can feel formulaic. For content that needs to sound human, Claude has an edge.

Speed

GPT-5 and GPT-5 mini are generally faster. Claude 4 Opus is the slowest due to its deeper reasoning. For latency-sensitive applications, GPT-5 mini offers the best speed-to-cost ratio.

Decision Framework

Use this framework to choose the right model:

Choose GPT-5 mini when:

• Cost is the primary concern
• Tasks are straightforward (classification, extraction, simple Q&A)
• You need fast response times
• You're processing high volumes

Choose Claude 4 Sonnet when:

• You need strong reasoning at a reasonable price
• Code quality matters (production systems)
• You're working with long documents (200K context)
• Natural language quality is important

Choose GPT-5 when:

• You need the largest context window (272K)
• Speed matters more than absolute quality
• You're already in the OpenAI ecosystem
• You need multi-modal capabilities (vision, audio)

Choose Claude 4 Opus when:

• Maximum quality is non-negotiable
• Tasks require deep, multi-step reasoning
• You're building premium products (legal, financial, research)
• Budget is secondary to accuracy

The Hybrid Approach

Most production systems don't need a single model for everything. A smart strategy:

• GPT-5 mini for 80% of requests (simple tasks, high volume)
• Claude 4 Sonnet for complex reasoning and code generation
• GPT-5 or Claude 4 Opus for the 5% of tasks that demand the best

This tiered approach can reduce costs by 60-80% compared to using a single premium model for everything.

Monthly Cost Scenarios

Here's what you'd pay at different usage levels:

Startup (1K requests/day)

• GPT-5 mini: ~$12/month
• Claude 4 Sonnet: ~$105/month
• GPT-5: ~$270/month
• Claude 4 Opus: ~$525/month

Growth (10K requests/day)

• GPT-5 mini: ~$120/month
• Claude 4 Sonnet: ~$1,050/month
• GPT-5: ~$2,700/month
• Claude 4 Opus: ~$5,250/month

Enterprise (100K requests/day)

• GPT-5 mini: ~$1,200/month
• Claude 4 Sonnet: ~$10,500/month
• GPT-5: ~$27,000/month
• Claude 4 Opus: ~$52,500/month

The Verdict

There's no single "best" model — only the best model for your specific workload and budget. GPT-5 mini dominates on cost, Claude 4 Sonnet on quality-per-dollar, and both flagships push the boundaries of what's possible.

The smartest move is to profile your workload, calculate costs across models, and use a tiered approach. Our cost calculator can model your exact usage pattern across all these models.