Head-to-Head Comparison

GPT-4o vs Claude Sonnet 4

Quick answer: GPT-4o leads this head-to-head in 2026, scoring 95 on the Hyland Score against Claude Sonnet 4's 95. It edges ahead overall in our scoring. Choose Claude Sonnet 4 instead if your work fits the "Reasoning" category better.

HIGHER SCORE

GPT-4o

OpenAI

95HYLAND SCORE

General-purpose reasoning and coding

Try GPT-4o

Claude Sonnet 4

Anthropic

95HYLAND SCORE

Frontier reasoning with best-in-class coding.

Try Claude Sonnet 4

Spec-by-spec

SPEC

GPT-4O

CLAUDE SONNET 4

Hyland Score

Category

Proprietary API

Reasoning

Pricing

Freemium

Open source

Self-hostable

Best for

General-purpose reasoning and coding

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Context window

128K tokens

200K tokens

API pricing

$5/1M input tokens

—

Hosting

OpenAI API, Azure OpenAI

—

License

Proprietary

—

Free tier

Limited: $5/mo credit

Yes (Claude.ai)

Modalities

—

Text, image

Access

—

API + Claude.ai

GPT-4o: strengths & weaknesses

Freemium pricing lowers the cost of getting started
Narrower feature set than the alternative

Claude Sonnet 4: strengths & weaknesses

Freemium pricing lowers the cost of getting started
Broader feature set out of the box

The Verdict

Choose GPT-4o for most teams

GPT-4o comes out ahead because it edges ahead overall in our scoring.

Choose Claude Sonnet 4 instead if your work fits the "Reasoning" category better.

Try GPT-4o Browse all AI Platforms & Models

GPT-4o vs Claude Sonnet 4: FAQ

Which is better, GPT-4o or Claude Sonnet 4?

Based on the Hyland Score, GPT-4o leads with 95 vs 95, because it edges ahead overall in our scoring. However, Choose Claude Sonnet 4 instead if your work fits the "Reasoning" category better.

Is GPT-4o free to use?

GPT-4o uses a Freemium pricing model. It is not open source. It cannot be self-hosted.

Is Claude Sonnet 4 free to use?

Claude Sonnet 4 uses a Freemium pricing model. It is not open source. It cannot be self-hosted.

Can I use GPT-4o and Claude Sonnet 4 together?

Yes — many teams combine them. GPT-4o strengths: api, proprietary. Claude Sonnet 4 strengths: api, coding, agents. Evaluate both against your actual workload before standardizing on one.