GPT-5.4 vs Claude Sonnet 5

Compare pricing, context windows, and features side by side.

Last verified Aug 2026 · Prices per 1M tokens

⚠️ Deprecation Notice: GPT-4o was deprecated in April 2025. Consider GPT-5.4 ($2.50/$15.00) or GPT-5.4 nano ($0.20/$1.25) as modern alternatives. See our GPT-5.4 pricing page for current details.
Best Context
Sonnet 5
1M vs 400K tokens
Best Value
Sonnet 5
20% cheaper input, 33% cheaper output

All Mid-Tier Models Compared

The mid-tier AI models from major providers, ranked by input price.

Model Provider Tier Input (per 1M) Output (per 1M) Context
Gemini 2.5 Pro Google Mid $1.25 $10.00 1M
Gemini 3.1 Pro Google Mid $2.00 $12.00 1M
GPT-5.4 OpenAI Mid $2.50 $15.00 400K
Claude Sonnet 5 Anthropic Mid $2.00 $10.00 1M
GPT-4o OpenAI Mid $2.50 $10.00 128K
Claude Haiku 4.5 Anthropic Budget $1.00 $5.00 200K

Calculate Your Exact Costs

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vs
OpenAI
GPT-5.4
$0.00
per month
Input cost $0.00
Output cost $0.00
Per request $0.00
Anthropic
Claude Sonnet 5
$0.00
per month
Input cost $0.00
Output cost $0.00
Per request $0.00
Enter your usage above to see savings.

Which Should You Choose?

Chatbot / Customer Support

High volume, short responses. Cost per message matters most. Both models handle complex customer queries well.

Pick Sonnet 5: At $2.00/$10.00 it's 20% cheaper on input and 33% cheaper on output than GPT-5.4 ($2.50/$15.00).

Code Generation

Complex reasoning, longer outputs. Quality and accuracy matter. Both handle most coding tasks well.

Pick Sonnet 5: 20% cheaper input ($2.00 vs $2.50) and 33% cheaper output. 1M context also helps with large codebases.

Long Document Analysis

Processing large documents, legal contracts, or codebases. Context window is critical.

Pick Sonnet 5: 1M context (2.5x more than GPT-5.4's 400K). Essential for large-scale document analysis and complex multi-step reasoning.

Complex Reasoning

Multi-step analysis, research tasks, and problems requiring deep logical reasoning across large information sets.

Pick Sonnet 5: Larger 1M context window enables better handling of complex multi-step reasoning tasks that span extensive information.

Creative Writing

Long-form content, nuanced storytelling, and tasks requiring superior style and voice.

Pick Sonnet 5: Anthropic's models excel at nuanced creative writing. The 1M context also helps maintain consistency across long-form content.

Enterprise / Safety-Critical

Regulated industries, strict compliance, Anthropic's safety guarantees required.

Pick Sonnet 5: Cheaper on both input and output, plus Anthropic's safety-first approach and enterprise compliance. The best value for regulated and safety-critical workloads.

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Frequently Asked Questions

Is GPT-5.4 cheaper than Claude Sonnet 5?

No, Claude Sonnet 5 is cheaper on both input and output. Sonnet 5 costs $2.00/$10.00 per 1M tokens while GPT-5.4 costs $2.50/$15.00. That's 20% cheaper on input and 33% cheaper on output. At 1M tokens/month, Sonnet 5 costs $120 vs GPT-5.4's $175 — saving $55/month.

Which is better for coding: GPT-5.4 or Claude Sonnet 5?

Both are excellent for coding. Sonnet 5 at $2.00/$10.00 is cheaper on both input (20% less) and output (33% less) than GPT-5.4 ($2.50/$15.00). Claude Sonnet 5 also has a 1M context window (2.5x more than GPT-5.4's 400K), making it better for large codebases. Sonnet 5 wins on both cost and context for most coding workloads.

What is the context window difference between GPT-5.4 and Claude Sonnet 5?

GPT-5.4 has a 400K token context window, while Claude Sonnet 5 has a 1M token context window. Sonnet 5 supports 2.5x more context, which is important for long document analysis, large codebases, and complex multi-step reasoning tasks.

GPT-5.4 vs Claude Sonnet 5 for enterprise?

For enterprise use, Sonnet 5 is the better value — it's cheaper on both input ($2.00 vs $2.50, 20% less) and output ($10.00 vs $15.00, 33% less) than GPT-5.4. Sonnet 5 also offers Anthropic's safety-first approach and a larger 1M context window. Sonnet 5 wins on cost, context, and safety for most enterprise deployments.

Is Claude Sonnet 5 worth it compared to GPT-5.4?

Claude Sonnet 5 is not only better — it's also cheaper. At $2.00/$10.00 per 1M tokens, Sonnet 5 costs 20% less on input and 33% less on output than GPT-5.4 ($2.50/$15.00). Combined with a larger 1M context window (vs 400K) and Anthropic's safety guarantees, Sonnet 5 is the better value on both price and capabilities.

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