Model comparison
Claude Sonnet 5.5 vs Grok 4.7
- Input
- $2.00
- Output
- $10.00
- Context
- 1M
- Released
- 2026-09-28
- Input
- $2.00
- Output
- $6.00
- Context
- 500K
- Released
- 2026-09-21
Claude Sonnet 5.5 scores higher on 2 of the 2 benchmarks both models report; both charge the same $2 per 1M input tokens; Claude Sonnet 5.5 has the larger context window (1M vs 500K).
Specs and pricing side by side
| Spec | Claude Sonnet 5.5 | Grok 4.7 |
|---|---|---|
| Maker | Anthropic | SpaceXAI |
| Released | 2026-09-28 | 2026-09-21 |
| Context window | 1M | 500K |
| Max output | 128K | not published |
| Input price | $2.00 | $2.00same |
| Output price | $10.00 | $6.00 |
| License | Proprietary | Proprietarysame |
| Weights | API only | API onlysame |
| Modalities | Text, Vision | Text, Visionsame |
| Knowledge cutoff | Jun 2026 | May 2026 |
Not published by either maker: parameters.
Benchmarks both models report
| Benchmark | Claude Sonnet 5.5 | Grok 4.7 |
|---|---|---|
| Terminal-Bench 4.0 | 70.6% | 38% |
| CursorBench 4.0 | 55.5% | 46.3% |
Scores are as published by each maker or its cited source; harness, reasoning effort and date can differ between rows, so treat small gaps as ties. Sources are listed on each model page.
Which one should you pick?
Pick Claude Sonnet 5.5 if…
- You care about Terminal-Bench 4.0, CursorBench 4.0 (it scores higher on 2 shared benchmarks).
- You need the longer context (1M vs 500K).
- Your use case is: reach for it to run coding and terminal agents at volume, where near-flagship results at half the Opus 5.5 token price matter more than the last few points.
Pick Grok 4.7 if…
- Your use case is: reach for it for coding agents in Cursor, Grok Build or GitHub Copilot that must hold a task across many steps.
FAQ
Which is better, Claude Sonnet 5.5 or Grok 4.7?
Claude Sonnet 5.5 scores higher on 2 of the 2 benchmarks both models report; both charge the same $2 per 1M input tokens; Claude Sonnet 5.5 has the larger context window (1M vs 500K). The better pick depends on whether you value benchmark scores, price per token, context length or openness for your workload.
How do Claude Sonnet 5.5 and Grok 4.7 pricing compare?
Claude Sonnet 5.5: $2.00 input, $10.00 output. Grok 4.7: $2.00 input, $6.00 output (list API prices as published by each maker).
What are the context windows of Claude Sonnet 5.5 and Grok 4.7?
Claude Sonnet 5.5 offers 1M with up to 128K output; Grok 4.7 offers 500K.
Is Claude Sonnet 5.5 newer than Grok 4.7?
Claude Sonnet 5.5 was released 2026-09-28; Grok 4.7 was released 2026-09-21.