Comparison · AI tool
GPT-5 vs Claude Sonnet 4: which 2026 frontier model wins for you?
Quick verdict
GPT-5 is the broadest, most ecosystem-rich frontier model: image, voice, GPTs, web. Claude Sonnet 4 is the careful long-form workhorse: better with long PDFs, big codebases and writing in your tone. Most pros end up paying both USD 20/month and using whichever fits the task.
Comparison table
| Criterion | GPT-5 | Claude Sonnet 4 |
|---|---|---|
| Vendor | OpenAI | Anthropic |
| Base monthly priceAPI pricing differs — see vendor docs | USD 20 (ChatGPT Plus) | USD 20 (Claude Pro) |
| Context window | Large (see vendor docs) | 200K tokens (extendable) |
| Extended reasoning | Yes | Yes |
| Native image generation | Yes | No |
| Voice mode | Yes (advanced) | Limited |
| Best for | General + multimodal | Long docs + careful writing |
GPT-5: pros
- Largest ecosystem (GPTs, plug-ins, APIs)
- Native image, voice and web browsing
- Strong default for general professional use
- Fast, low-friction iteration
Cons
- Can over-summarize on very long documents
- Pro tier (USD 200/mo) is steep for individuals
Claude Sonnet 4: pros
- Excellent at long PDFs, contracts, papers
- Better tone control on long-form writing
- Strong on multi-file code refactors
- Generous context window (200K+)
Cons
- No native image or advanced voice mode
- Smaller plug-in ecosystem
Final verdict
Pick GPT-5 if you want one tool that does everything. Pick Claude Sonnet 4 if you live in long documents and code. Most serious users buy both.
Browse the full catalogFrequently asked questions
Is GPT-5 better than Claude Sonnet 4 for coding?
It depends. GPT-5 is faster for one-off scripts and quick fixes. Claude Sonnet 4 typically wins on multi-file refactors and reasoning over a large repo.
Which is cheaper, GPT-5 or Claude Sonnet 4?
Consumer plans are tied at USD 20/month (ChatGPT Plus vs Claude Pro). API pricing per token differs and changes; check the vendor docs.
Can Claude Sonnet 4 generate images?
No, Claude is text-only. Pair it with Midjourney v7 or nano-banana-2 for image generation.
Which has the bigger context window?
Claude Sonnet 4 currently leads with a 200K-token window (extendable for some plans). GPT-5's window is also large but check OpenAI docs for current limits.
Should I cancel ChatGPT if I get Claude Pro?
Most professionals keep both. They cost the same and shine at different tasks; the combined cost (USD 40/mo) is far less than time lost forcing one tool to do everything.
Is GPT-5 actually released?
Yes. OpenAI released GPT-5 in 2025 and rolled it out across ChatGPT and the API. See OpenAI's release notes for current availability.