GPT-6 Sol vs Grok 4.6
Grok 4.6 leads overall, C- to D+. GPT-6 Sol is about 13x cheaper per task. By suite, Grok 4.6 takes real-world issues (D to D-) and spec planning is even at C. Take GPT-6 Sol anyway when you want the side that is cheaper per task and faster on real-world issues.Measured
Each agent graded on the same private suites, running headless through its own tools. Advantages are oriented so a win is a win, whichever way the metric runs.
Verdict: Grok 4.6 vs GPT-6 Sol
Grok 4.6 leads overall, C- to D+. By suite: Grok 4.6 takes real-world issues, D to D- (47% vs 38% capability); spec planning is even at C (64% vs 66% capability); Grok 4.6 takes vibe coding, C- to D+ (61% vs 51% capability). GPT-6 Sol used 5% of ChatGPT Plus's weekly limit per pass, $0.012 per task at the listed price; at the ~$100 tier the board defaults to that is an estimated ~1% of ChatGPT Pro 5x's weekly limit (est, about $0.012 per task). Grok 4.6 used 13% of SuperGrok Plus's weekly limit per pass, $0.157 per task at the listed price. Per task, GPT-6 Sol is about 13x cheaper ($0.012 vs $0.157). GPT-6 Sol is faster on real-world issues: a median task takes 2m 44s against 7m 10s. Both finished every task on it. Reasons to pick GPT-6 Sol anyway: it is cheaper per task ($0.012 vs $0.157) and it is faster on real-world issues (2m 44s vs 7m 10s median).
Changed since W38: Grok 4.6: real-world issues C- to D, real-world issues usage 4% to 3% of the weekly limit, vibe coding C+ to C-.
| Dimension | GPT-6 Sol | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 38% | 47% | +8% (Grok 4.6 leads) |
| Median task time | 2m 44s | 7m 10s | 4m 26s faster (GPT-6 Sol leads) |
| Approx. task cost | $0.012 / task | $0.046 / task | $0.034 / task lower (GPT-6 Sol leads) |
GPT-6 Sol: 4.0% of ChatGPT Plus (37.0% / 5h, 4.0% / 1w) per run. Its weekly limit holds about 6 of the week's 33.6 5h windows. Grok 4.6: 3.0% of SuperGrok Plus (3.0% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | GPT-6 Sol | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 64% | 66% | +2% (Grok 4.6 leads) |
| Median task time | 2m 23s | 45m 26s | 43m 3s faster (GPT-6 Sol leads) |
| Approx. task cost | $0.011 / task | $0.575 / task | $0.563 / task lower (GPT-6 Sol leads) |
GPT-6 Sol: 1.0% of ChatGPT Plus (8.0% / 5h, 1.0% / 1w) per run. Its weekly limit holds about 6 of the week's 33.6 5h windows. Grok 4.6: 10.0% of SuperGrok Plus (10.0% / 1w) per run. Each figure is a share of that agent's own plan, so there is no delta to draw.
| Dimension | GPT-6 Sol | Grok 4.6 | Advantage |
|---|---|---|---|
| Capability | 51% | 61% | +10% (Grok 4.6 leads) |
| Median task time | 3m 4s | 11m 14s | 8m 9s faster (GPT-6 Sol leads) |
| Approx. task cost | $0.018 / task | <$0.230 / task | $0.212 / task lower (GPT-6 Sol leads) |
GPT-6 Sol: 0.4% of ChatGPT Plus (2.4% / 5h, 0.4% / 1w) per good solve. Its weekly limit holds about 6 of the week's 33.6 5h windows. Grok 4.6: under 1% of SuperGrok Plus per good solve. Each figure is a share of that agent's own plan, so there is no delta to draw.
Grades and deltas are comparable only within a suite version. See methodology.
Frequently asked questions
Which is better for coding, GPT-6 Sol or Grok 4.6?
Grok 4.6 clears higher: tier 4 of 5 versus tier 1 for GPT-6 Sol on real-world@v3, our private suite of real-world coding problems. Latest measurement 2026-09-23.
Which is cheaper per task, GPT-6 Sol or Grok 4.6?
GPT-6 Sol used 5% of ChatGPT Plus's weekly limit per pass, $0.012 per task at the listed price; at the ~$100 tier the board defaults to that is an estimated ~1% of ChatGPT Pro 5x's weekly limit (est, about $0.012 per task). Grok 4.6 used 13% of SuperGrok Plus's weekly limit per pass, $0.157 per task at the listed price. Per task, GPT-6 Sol is about 13x cheaper ($0.012 vs $0.157).
What do GPT-6 Sol and Grok 4.6 cost a month?
GPT-6 Sol runs on ChatGPT Plus at $20/month (public price as of 2026-07-20). Grok 4.6 runs on SuperGrok Plus at $100/month (public price as of 2026-09-14).