Fifteen tests on this site put a Claude model against a GPT model. This page says what they found, what the two line-ups cost, and which one to open for the job you have.
Aug 26, 2026 · 7 min read
We make no claim that one of these two providers is better. Each provider ships a line-up, and the answer changes with the model and with the work.
Fifteen articles on this site put a Claude model against a GPT model on a named job, and one of them is itself a parent page covering three jobs in full. The cards below open the four with the clearest answers, and the index further down lists the rest, so nothing here has to be taken on trust. Where the public evidence is thin the pages say so rather than filling the gap with a verdict.
Underneath the cards are the facts that do not move with the job: what each line-up holds and costs, then the model-level dimensions where a graded benchmark separates two specific versions. Read those as the constants and the cards as the answer.
One thing to be clear about before the tables. Every test behind this page ran through the providers' APIs in one neutral setup. It is not a comparison of the apps around them, so a file upload, a browser extension or an IDE integration is not part of anything here.
Each card names a job we put the two providers' models through, says which model took it and why, and opens the article behind that answer. The method is the same in all four: one prompt, one setup, and score what comes back before editing it.
The matchup we tested deepest, across three jobs in full. Opus 5 recovers more from messy source material and Sol holds an exact template more reliably, so the pick moves with the job rather than settling.
Learn moreClaude Opus 4.8 for reading a whole agreement and spotting issues in context. GPT-5.5 for tightly defined extraction or a narrow edit that has to fit a fixed shape. Neither is safe unchecked, since every credible test still shows real error rates.
Learn moreClaude Sonnet 5 first, because Anthropic documents it as following a prompt literally rather than generalising beyond what was asked. GPT-5.6 Terra is the pick when the brief is loose or the queue is long, and it generated at a faster measured rate.
Learn moreGPT-5.6 Sol for a single-pass translation, on the stronger general-capability evidence. Claude Sonnet 5 for a cost-controlled translate-and-review loop, since it costs materially less and carries one price across its whole context window.
Learn moreThe published figures behind every test on this page, at the level of the line-up rather than one version. Where the models differ from each other, both ends are named.
Figures from Anthropic and OpenAI documentation, as cited on the articles behind this page. Sol's rate is OpenAI's current promotional price rather than its list price. Fast mode on Claude is a separate product at $10 and $50 per million and is not compared here. Max output is 128,000 tokens and the input types are text and images on both sides, so neither is listed as a row.
These rows sit underneath the jobs above rather than competing with them. Each one compares two named versions on a dimension that holds whatever the job is, because that is the level the evidence exists at. A provider-level version of this table would be a guess.
Both Elo figures above are maximum-effort rows. Opus 5 at medium effort scores 1,469 on AA-Briefcase, below Sol's maximum-effort 1,503, so decide your effort setting before reading the board. Luna has not been tested against a Claude model on this site, so its row is a published price rather than a graded result.
Every remaining article on this site that puts a Claude model against a GPT model, grouped by the kind of work rather than by version, since the version that suits a job matters less than the job. The four above are not repeated here.
Documents and long-form work
Writing for an audience
Whole-job comparisons on the earlier models
Every figure here is published and every verdict is attached to a job somebody tested. That still leaves two things this page cannot do for you.
Prices move, and two of the rates above are promotional rather than list, so check them at the vendor instead of inheriting a figure from an article. And none of the boards cited here grade whether a model will tell you a step is missing rather than filling the gap with something plausible, which is the failure that costs the most on real work. Both vendors document that behaviour themselves, and neither has solved it.
Playgram is not the right buy for everyone either. If one person needs one model and nothing else, a single vendor subscription is simpler and cheaper than a workspace built for a team.
The safest last step is to test the shape of your own material rather than a generic prompt from the internet. A fair test needs the same setup on both sides: the same sources, the same prompt and the same place to run them, so the result reflects the models and not the tool around them. In practice that is harder than it sounds, because most teams end up running one model in one app and the other somewhere else on a separate subscription, which tilts the comparison before the first answer arrives. The cleaner the setup, the more the difference you see is really one model against the other.
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