GPT-6 Luna vs Grok 4.7
| Spec | GPT-6 Luna | Grok 4.7 |
|---|---|---|
| Respan Index | 49.2 (#36) | 52.1 (#28) |
| Blended price per 1M | $0.1 | $3 |
| Context window | 1.1M | 500K |
| Input / output per 1M | $0.05 / $0.25 | $2 / $6 |
| Max output | 128K | - |
| Input | text, vision | text, vision |
| Released | 2026-09-22 | 2026-09-21 |
Respan Index by category
Each category is scored 0 to 100, and how far ahead the winner is. Leads under a point are close to even.
| Category | GPT-6 Luna | Grok 4.7 |
|---|---|---|
| Coding | 29.6 GPT-6 Luna | 43.4 Grok 4.7 |
| Agents | 61.2 GPT-6 Luna | 65.3 Grok 4.7 |
| Reasoning | 57.2 GPT-6 Luna | 43.4 Grok 4.7 |
| Knowledge & language | 38.9 GPT-6 Luna | 55.5 Grok 4.7 |
| Human preference | 55.2 GPT-6 Luna | 56.7 Grok 4.7 |
Benchmarks both report
Grok 4.7 leads on 18 of the 24 benchmarks both report. Higher is better. Each score links to where it was published.
| Benchmark | GPT-6 Luna | Grok 4.7 |
|---|---|---|
| SAGE 1.1 (Vals AI) | 83.4% | 88.7% |
| Chess Puzzles (Epoch AI) | 36% | 41% |
| LMArena Agent (LMArena) | 0.0223 | 0.0239 |
| LMArena Elo | 1441 | 1441 |
| LMArena WebDev (LMArena) | 1579 | 1638 |
| LMArena Vision (LMArena) | 1240 | 1250 |
| APEX-Agents (Mercor) | 44.3% | 54.6% |
| FrontierMath Tier 4 v2 (Epoch AI) | 56.1% | 17.1% |
| FrontierMath Tiers 1-3 v2 (Epoch AI) | 78.9% | 53% |
| Furniture Assembly (Epoch AI) | 44.2% | 20.8% |
| GPQA Diamond | 90.5% | 92.7% |
| LiveBench Agentic Coding (LiveBench) | 51.2% | 54% |
| LiveBench Coding (LiveBench) | 79% | 77.2% |
| LiveBench Data Analysis (LiveBench) | 73.4% | 76.9% |
| LiveBench Instruction Following (LiveBench) | 55.9% | 75.3% |
| LiveBench Language (LiveBench) | 73.8% | 80.1% |
| LiveBench Mathematics (LiveBench) | 89.1% | 95.7% |
| LiveBench Reasoning (LiveBench) | 81.8% | 82.7% |
| Mystery Game Puzzles (Epoch AI) | 7% | 29% |
| OTIS Mock AIME 2024-2025 (Epoch AI) | 98.9% | 98.1% |
| SAGE (Vals AI) | 48.1% | 40.8% |
| SimpleQA Verified | 41.4% | 56% |
| Terminal-Bench 4.0 (Vals AI) | 13.6% | 28.8% |
| DeepSWE v1.1 | 66.6% | 71% |
FAQ
Is GPT-6 Luna better than Grok 4.7?
Grok 4.7 scores 52.1 on the Respan Index (#28), ahead of GPT-6 Luna at 49.2 (#36). Grok 4.7 leads on 18 of the 24 benchmarks both report.
Which is cheaper, GPT-6 Luna or Grok 4.7?
GPT-6 Luna lists at $0.05 input and $0.25 output per 1M tokens; Grok 4.7 at $2 and $6. GPT-6 Luna is 30x cheaper per token at list price.
Which has the larger context window?
GPT-6 Luna accepts 1.1M tokens and Grok 4.7 500K tokens.