Compare / head-to-head
Claude Sonnet 5.5vs
Grok 4.7
Claude Sonnet 5.5 leads 2 of 2 shared benchmarks. Grok 4.7 is 1.5x cheaper per token. Claude Sonnet 5.5 has the larger context window (1M tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
2 – 0
Claude Sonnet 5.5 leads
Cheaper per token
Grok 4.7
1.5x cheaper, input + output
Larger context
Claude Sonnet 5.5
1M tokens
Providers
2 providers
Anthropic · xAI
Claude Sonnet 5.5
Anthropic · released 2026-09-28
textvision
Quality
Benchmark matrix
2 shared · 4 only Claude Sonnet 5.5 · 5 only Grok 4.7| Benchmark | Claude Sonnet 5.5 | Grok 4.7 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| CursorBench 4.0 | 55.5% ↗ | 46.3% ↗ | +9.2 pt | Claude Sonnet 5.5 |
| Terminal-Bench 4.0 | 70.6% ↗ | 38% ↗ | +32.6 pt | Claude Sonnet 5.5 |
| Only Claude Sonnet 5.5 reports · 4 | ||||
| Chartography (no tools) | 61.6% ↗ | not reported | — | — |
| FrontierCode v1.1 (Main) | 46.2% ↗ | not reported | — | — |
| Humanity's Last Exam (with tools) | 64.5% ↗ | not reported | — | — |
| OSWorld 2.1 (partial) | 80.1% ↗ | not reported | — | — |
| Only Grok 4.7 reports · 5 | ||||
| AA Briefcase v1.1 | not reported | 1657 ↗ | — | — |
| DeepSWE v1.1 | not reported | 71% ↗ | — | — |
| EEBench | not reported | 64% ↗ | — | — |
| Harvey Legal Agent Benchmark | not reported | 19.6% ↗ | — | — |
| HealthBench Professional | not reported | 56.7% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Sonnet 5.5 minus Grok 4.7 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Sonnet 5.5 | Grok 4.7 | Edge |
|---|---|---|---|
| Context window | 1M tokens | 500K tokens | Claude Sonnet 5.5 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $2 ↗ | $2 ↗ | Tie |
| Output price / 1M | $10 ↗ | $6 ↗ | Grok 4.7 |
| Cached input / 1M | $0.2 ↗ | $0.5 ↗ | Claude Sonnet 5.5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $12 | $8 | Grok 4.7 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-09-28 | 2026-09-21 | — |
| Cited benchmark scores | 6 | 7 | — |
Reliability
Provider status
Live from /statusMore matchups
Claude Sonnet 5.5 vs …
Models sharing the most benchmarksMore matchups
Grok 4.7 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Claude Sonnet 5.5 and Grok 4.7 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.