Question 1

Is Claude Sonnet 4 better than GPT-4o?

Accepted Answer

Claude Sonnet 4 outperforms GPT-4o on coding (Coding ELO 1305 vs 1265), overall quality (Arena ELO 1280 vs 1260), long-context tasks (200K vs 128K window), and nuanced writing. GPT-4o outperforms on speed (95 vs 78 tok/s), cost ($2.50/$10 vs $3/$15 per million tokens), native code execution (Code Interpreter), and ecosystem integration. Which is 'better' depends on your use case.

Question 2

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

Accepted Answer

GPT-4o is cheaper: $2.50/M input and $10/M output tokens vs Claude Sonnet 4 at $3/M input and $15/M output. For output-heavy workloads, the difference is significant — at 100M output tokens/month, GPT-4o saves $500K/month compared to Claude Sonnet 4. Claude Sonnet 4 does offer a 90% discount on cached input tokens ($0.30/M) which can reduce costs substantially for repetitive system-prompt workloads.

Question 3

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

Accepted Answer

GPT-4o is faster: 95 tokens/second output speed and 230ms time-to-first-token, compared to Claude Sonnet 4's 78 tokens/second and 320ms TTFT. For real-time applications where response latency matters, GPT-4o has a meaningful advantage. For batch processing or async workflows where latency is less critical, the speed difference is negligible.

Question 4

Which has a bigger context window, Claude Sonnet 4 or GPT-4o?

Accepted Answer

Claude Sonnet 4 has a 200K token context window — roughly 150,000 words or a 400-page book. GPT-4o's context window is 128K tokens (~96,000 words). For most tasks this difference doesn't matter, but for large codebase analysis, full contract review, or ingesting multiple long documents, Claude Sonnet 4's extra headroom is a genuine advantage.

Question 5

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

Accepted Answer

Claude Sonnet 4 leads on coding benchmarks: Coding Arena ELO of 1305 vs GPT-4o's 1265, and HumanEval 92% vs 90.2%. More importantly, Claude Sonnet 4 handles multi-file refactors and complex debugging better in practice. GPT-4o with Code Interpreter is better for data science Python because it runs and verifies code live in the same conversation.

Question 6

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

Accepted Answer

Claude Sonnet 4 leads on writing quality — it scores higher on MT-Bench writing sub-scores and produces more natural prose with better stylistic range. GPT-4o is more competitive for short-form structured content (ads, product descriptions, email copy) where speed and punchy phrasing matter more than literary quality.

Question 7

Can Claude Sonnet 4 execute code like GPT-4o?

Accepted Answer

Claude Sonnet 4 does not have native code execution (no built-in Code Interpreter equivalent). GPT-4o's Code Interpreter runs Python live in ChatGPT, making it significantly better for data analysis tasks where you need to upload a CSV, run pandas, and see the output. Through the API, both models generate code but neither executes it server-side — your application must run the generated code.

Question 8

Which is better for long document analysis, Claude Sonnet 4 or GPT-4o?

Accepted Answer

Claude Sonnet 4 is the stronger choice for long document analysis: its 200K token context window fits roughly 500 pages of text, compared to GPT-4o's 128K (~320 pages). Claude also scores higher on needle-in-a-haystack retrieval benchmarks at long context lengths, meaning it is less likely to miss key facts buried deep in a document. For contract analysis, full codebase review, and multi-document research, Claude Sonnet 4's context advantage is material.

Feature	Claude Sonnet 4	GPT-4o
Provider	Anthropic	OpenAI
Input Price / 1M tokens	$3.00	$2.50
Output Price / 1M tokens	$15.00	$10.00
Context Window	200K	128K
Max Output Tokens	64,000	16,384
Arena ELO	1,280	1,260
Coding ELO	1,305	1,265
TTFT (ms)	320	230
Tokens/sec	78	95
Multimodal	Yes	Yes
JSON Mode	Yes	Yes
Function Calling	Yes	Yes
Vision	Yes	Yes

Claude Sonnet 4 vs GPT-4o: Pricing, Benchmarks & Verdict (2026)

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