For most founders Claude Opus is still the safer default for high-stakes judgment, while Qwen3.7-Max wins on long multi-step agent runs and price. As Ethan Mollick argues in Co-Intelligence, the smarter move is to run both side by side on real work for two weeks and let your own results pick the winner.

I have been running the May 2026 release of Qwen3.7-Max next to Claude Opus 4.7 inside my actual founder workflow for the last few weeks, and the honest answer is more interesting than the benchmark posts suggest. Both are excellent. They are not interchangeable. The right question is not "which model is best" but "which model do you want sitting in which seat in your week."

Start with the numbers, because the gap is real. On GPQA Diamond, Qwen3.7-Max scores 92.4 against Claude Opus 4.6's 91.3, and on the Apex reasoning benchmark it beats DeepSeek V4 Pro 44.5 to 38.3. More relevant to founders, OpenRouter currently lists Qwen3.7-Max at $1.25 per million input tokens and $3.75 output, while Claude Opus 4.7 is at $5 input and $25 output. For agentic loops that re-read your codebase, your CRM, or a long thread fifty times in an afternoon, that is not a rounding error. Multiple independent tests over the last month have also confirmed that Qwen3.7-Max holds up better than Claude on very long-horizon agent runs — the kind where a task involves twenty or thirty tool calls and you cannot afford the model to drift halfway through.

Now the honest part. None of that matters if the model gives you a worse decision. In my own work, Claude is still the one I reach for when I am thinking through something where being wrong is expensive: a hiring call, a positioning memo, pushing back on my own strategy, drafting a hard email to a co-founder. The "deeper engineering judgment" reviewers keep mentioning when they put the two side by side maps almost exactly onto founder judgment too. Claude is more willing to disagree with me, more careful about the second-order consequences, and more grounded when I try to bait it into agreeing with a bad idea. That is the trait you want in a thinking partner, and it is the one Daniel Kahneman would tell you matters most, because your own System 1 already has a quick answer ready — what you need from the model is a System 2 that does not flinch.

Where Qwen3.7-Max has earned its seat in my stack is the long, mechanical, agentic work I used to dread. Mining a hundred Reddit threads for the real questions my audience asks. Drafting an outbound list from three sources. Running through a directory of files and producing structured notes on each one. These are jobs where the value is in finishing without losing the plot, not in having a brilliant opinion at step nine. The cache discount makes it the obvious choice when an agent has to re-read the same context across dozens of turns, and the longer agent stamina shows up in fewer "lost in the middle" failures around turn fifteen.

The practical setup I have landed on is the one Dorie Clark would call a portfolio move from The Long Game: do not bet everything on a single tool, but do not spread yourself across six either. I keep Claude as my default "thinking partner" — strategy, writing, hard decisions, anything where I am genuinely trying to be smarter than I would be alone. I use Qwen3.7-Max as the workhorse for long agent runs, batch processing, and any task where the bottleneck is throughput and tolerance for tedium rather than nuance. The two cost lines together are still less than what I was paying for Claude alone three months ago, and the quality of my own thinking has gone up, not down, because I have stopped using a $25-per-million-output model to do work that does not need that horsepower.

What I would push back on is the framing of these comparisons as a championship belt. There is no winner. There is your week, your decisions, your money, and a question of which seat each model is going to sit in. The discipline I keep coming back to is the one Ethan Mollick lays out in Co-Intelligence: ignore the benchmark posts for a fortnight, pick three real tasks from your own calendar, run both models against them in parallel, and look at the outputs honestly. After two weeks you will know which model belongs in which seat for the kind of work you actually do — and that answer will be more accurate than any blog post, including this one.


Related: How to Find Your Passion · Best Self-Improvement Books · How to Make Better Decisions · What University Will Not Teach You