Claude Sonnet 4.6 is the stronger model in 2026 — it leads on SWE-bench coding benchmarks, writing quality, and has a dramatically larger context window (1M vs 128K tokens). GPT-4o's advantages are multimodal strength (image generation, vision), a mature plugin ecosystem, and slightly lower input cost at $2.50/1M vs Claude's $3/1M. For most developers and knowledge workers, Claude Sonnet 4.6 is the better daily driver.
OpenAIBalanced
GPT-4o
Best all-around pick for image-heavy and multimodal workflows.
VS
AnthropicPremium
Claude Sonnet 4.6
Best daily driver for coding and writing — the model most developers actually reach for.
Winner
At a glance
GPT-4o
Claude Sonnet 4.6
Input cost / 1M tokens
$$2.50/1M
$$3.00/1M
Output cost / 1M tokens
$$10.00/1M
$$15.00/1M
Context window
128k tokens
1M tokens
Speed
Fast
Balanced
Price tier
Balanced
Premium
Benchmarks
SWE-bench (coding)
46%
79.6%
Arena Elo
1,295
1,340
MMLU
88.7%
88.3%
How they compare
Which model wins for each use case — and why.
CodingClaude Sonnet 4.6 wins
Claude Sonnet 4.6 scores 79.6% on SWE-bench vs GPT-4o's ~46%. It's the default in Cursor and Windsurf, the leading AI code editors.
WritingClaude Sonnet 4.6 wins
Claude Sonnet 4.6 consistently produces cleaner, more natural prose with better tone control for editorial, marketing, and long-form content.
Vision / ImagesGPT-4o wins
GPT-4o has stronger native image understanding and can generate images via DALL-E integration. Claude's vision is capable but image generation requires a separate tool.
Long ContextClaude Sonnet 4.6 wins
Claude Sonnet 4.6 supports 1M tokens vs GPT-4o's 128K — 8× more context. For analyzing full codebases, large PDFs, or long transcripts, Claude is the clear choice.
PriceGPT-4o wins
GPT-4o costs $2.50/1M input tokens vs Claude Sonnet 4.6's $3/1M. A modest but real 17% saving at high volume.
Which should you pick?
Pick GPT-4o if…
Your workflow involves image generation or heavy multimodal tasks
You're already in the OpenAI ecosystem with existing integrations
You need native DALL-E image generation alongside text
Cost is a priority and the 17% input price difference matters at your volume
For most workflows, Claude Sonnet 4.6 is the stronger choice.
The best all-around model for most developers and writers. Strong SWE-bench, excellent writing, 1M context — all at $3/1M input. Hard to beat as a daily driver.
The case for each model
What each one is genuinely good at, where it falls down, and when we would steer you away from it.
Our overall pick in this comparison. Against GPT-4o it costs about 31% more per token and takes 8x the context.
The default model powering Cursor and Windsurf. 79.6% SWE-bench, 1M context window, and best-in-tier writing quality — all at $3/1M input.
Input
$3.00/1M
Output
$15.00/1M
Context
1M tokens
Speed
Balanced
What people actually use it for
Daily coding in Cursor — debugging, refactoring, and feature implementation
Drafting polished client reports, strategy memos, and long-form editorial content
Answering research questions with up to 1M tokens of document context
Where it wins
Strong coding quality with 1M context at $3/1M input
Default model in Cursor and Windsurf, the two most popular AI coding editors
Best writing quality in its price tier — tone, long-form clarity, editorial polish
Where it falls down
Claude Opus 4.7 has a higher current premium coding ceiling
GPT-5.5 or GPT-5.4 are better picks when OpenAI computer-use workflows are the priority
Skip it if
You specifically need desktop-control capabilities (GPT-5.5/GPT-5.4) or the absolute highest coding ceiling (Opus 4.7).
Our verdict
The best all-around model for most developers and writers. Strong SWE-bench, excellent writing, 1M context — all at $3/1M input. Hard to beat as a daily driver.
Claude Sonnet 4.6 leads on coding (SWE-bench 79.6% vs ~46%), writing quality, and context window. GPT-4o leads on multimodal/vision and has a slightly lower input cost.
Which is cheaper — GPT-4o or Claude?
GPT-4o is slightly cheaper: $2.50/1M input tokens vs Claude Sonnet 4.6 at $3/1M — about 17% less. Output costs are similar at $10/1M for GPT-4o vs $15/1M for Claude.
Which is better for coding?
Claude Sonnet 4.6 is significantly better for coding. It scores 79.6% on SWE-bench vs GPT-4o's ~46%, and is the default model in Cursor and Windsurf.
Does GPT-4o have a larger context window than Claude?
No — Claude Sonnet 4.6 has a 1M token context window, 8× larger than GPT-4o's 128K. For long documents and large codebases, Claude wins clearly.