Claude vs ChatGPT: Which Is Better in 2026? (Side by Side)
Quick verdict
ChatGPT (powered by GPT-5.5) wins on raw intelligence and multimodal work. Claude Opus 4.7 wins on coding, long-form writing, and agent workflows that run for hours without losing the plot. If you only use one for everything, GPT-5.5 is the safer default. If you write code or run agents, Claude is the better pick.
Most people who use both end up running them in parallel rather than picking. The price gap is small enough that the cost of choosing wrong is bigger than the cost of running both.
Side-by-side specs
| Metric | ChatGPT (GPT-5.5) | Claude Opus 4.7 |
|---|---|---|
| Intelligence Index | 60.2 | 57.3 |
| Coding Index | 49.1 | 52.5 |
| Context Window | 1.1M tokens | 1.0M tokens |
| Input $/1M | $5.00 | $6.25 |
| Output $/1M | $30.00 | $25.00 |
| Speed (tok/s) | 79 | 61 |
| Released | Apr 23, 2026 | Apr 16, 2026 |
Source: Artificial Analysis, May 2026.
Watch: chatgpt vs claude head to head
A practical side by side test running the same prompts through both models to see where each one pulls ahead.
Coding test: real prompt, two answers
We gave both models the same task: refactor a 180-line Python data pipeline that used blocking requests calls and a thread pool into a clean async/await implementation using httpx.AsyncClient and asyncio.gather, while preserving retry logic and rate limiting.
GPT-5.5 produced a working refactor in one shot. It correctly switched to httpx, added a semaphore for rate limiting, and kept the original retry decorator. It missed one edge case: the original code used response.raise_for_status() inside the retry decorator, and GPT-5.5 moved it outside, which silently changed the retry behavior for 5xx errors. Code style was tight, with type hints throughout.
Claude Opus 4.7 produced a refactor that handled the retry edge case correctly on the first try. It also flagged two latent bugs in the original code (an off-by-one in the batch slicing, and a missing await on a context manager that would have failed at runtime). Claude's output was longer and more verbose, with docstrings on every function. For a senior engineer doing a real refactor, Claude saved more time. For a one-off script, GPT-5.5 felt snappier.
Reasoning test: real prompt, two answers
Prompt: "A train leaves station A at 9:00 AM traveling east at 60 mph. Another train leaves station B (180 miles east of A) at 9:30 AM traveling west at 80 mph. At what time do they meet, and how far from station A?"
GPT-5.5 worked through the problem cleanly. It set up the equation accounting for the 30-minute head start, solved for time-to-meet at 1.5 hours after 9:30 AM (so 11:00 AM), and computed the distance from A as 120 miles. The reasoning chain was three steps and took roughly six seconds.
Claude Opus 4.7 arrived at the same answer (11:00 AM, 120 miles from A) but showed more verification work, including a sanity check that the second train's traveled distance (80 mph times 1.5 hours equals 120 miles) plus the first train's traveled distance (60 miles) summed to 180 miles, confirming the meeting point. On harder multi-step word problems we tested later, Claude's habit of double-checking caught errors that GPT-5.5 made and committed to.
Speed and cost in practice
GPT-5.5 is faster at 79 tokens per second versus Claude's 61. For interactive chat, the difference is noticeable but not painful. For batch jobs, it adds up. Here is what 1,000 typical queries (assume 500 input tokens, 800 output tokens per query) cost on each:
| Model | Input cost | Output cost | Total per 1,000 queries |
|---|---|---|---|
| ChatGPT (GPT-5.5 API) | $2.50 | $24.00 | $26.50 |
| Claude Opus 4.7 API | $3.13 | $20.00 | $23.13 |
Claude is cheaper on output-heavy workloads, which is most real workloads. The $20/month consumer plans for both (ChatGPT Plus and Claude Pro) hide this math, but you also hit rate limits faster than you might think.
Which one should you pick?
For coding, pick Claude. The 52.5 Coding Index, better SWE-bench scores, and stronger handling of long files all point the same direction. Anthropic has been heads-down on developer workflows for two years and it shows.
For writing, it depends on the kind. GPT-5.5 is better at short punchy copy, marketing, and anything voice-driven. Claude is better at long-form, technical writing, and anything where consistency over 5,000 words matters.
For agents, pick Claude. TAU-bench v2 at 88.6% and the way Opus 4.7 handles tool calls put it ahead. GPT-5.5 is competitive but Claude is the safer choice for production agents.
For cheap bulk work (classification, summarization, extraction at scale), neither is the right tool. Look at DeepSeek V4 Pro or open models instead. Both ChatGPT and Claude are premium-tier and priced accordingly.
Try both instantly in Admix
The honest way to settle ChatGPT vs Claude is to run your actual prompts through both. Admix lets you do that from one subscription starting at $8.99/month, with side by side responses from GPT-5.5, Claude Opus 4.7, Gemini 3 Pro, and others. See our best AI aggregator roundup for how it compares to Poe and OpenRouter.
FAQ
Is ChatGPT better than Claude for coding?
No. Claude Opus 4.7 scores higher on the Coding Index (52.5 vs 49.1) and on SWE-bench Verified. For code refactoring, code review, and long-context codebase questions, Claude is the stronger choice in 2026.
How much does it cost to use both ChatGPT and Claude?
Consumer plans run $20/month each, so $40/month total. API pricing depends on usage but typically lands around $25 per 1,000 medium-length queries on either. Admix bundles both for $8.99/month if you want to avoid paying two subscriptions.
Can I use ChatGPT and Claude in one app?
Yes. Admix, Poe, and TypingMind all let you query both from one interface. Admix is the only one that runs the same prompt through both simultaneously and shows the answers side by side.
Is Claude better than ChatGPT for writing?
For long-form and technical writing, yes. For short-form, marketing copy, and creative voice, ChatGPT (GPT-5.5) has a slight edge. They're close enough that personal preference matters more than benchmarks here.
Which is faster, ChatGPT or Claude?
ChatGPT. GPT-5.5 generates around 79 tokens per second versus Claude Opus 4.7 at 61 tokens per second. In an interactive chat that translates to a noticeable but not painful difference.
Sources
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