AI model comparison
Claude Sonnet 5.5 vs Grok 4.7
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
Anthropic
Claude Sonnet 5.5
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.
- Input / 1M
- $2
- Output / 1M
- $10
- Context
- 1M
xAI
Grok 4.7
Grok 4.7 is SpaceXAI's flagship model for coding, agentic tasks, and knowledge work, succeeding Grok 4.6.
- Input / 1M
- $2
- Output / 1M
- $6
- Context
- 500K
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
Grok 4.7
1.3x cheaper for a typical chat
Higher intelligence score
Claude Sonnet 5.5
56 vs 46.4 on Artificial Analysis
Larger context window
Claude Sonnet 5.5
1M vs 500K tokens
Newer release
Claude Sonnet 5.5
Released September 28, 2026
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
Claude Sonnet 5.556Coding index
Claude Sonnet 5.5Not availableAgentic index
Claude Sonnet 5.5Not availablePricing
Claude Sonnet 5.5 vs Grok 4.7 API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | Claude Sonnet 5.5 | |
|---|---|---|
| Input tokensPer 1M tokens | $2 | $2 |
| Output tokensPer 1M tokens | $10 | $6 |
| Cached input (read)Per 1M tokens | $0.10 | $0.50 |
| Cache writePer 1M tokens | $2.50 | Not available |
| Long-context pricingPer 1M tokens, for very long prompts | Same rate at any length | $4 in / $12 out above 200K |
| Web searchPer request | $0.01 | $0.005 |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
Claude Sonnet 5.5$9Coding task
30K in, 4K out
Claude Sonnet 5.5$100$43 cachedLong document summary
150K in, 2K out
Claude Sonnet 5.5$320$35 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | Claude Sonnet 5.5 | |
|---|---|---|
| Context window | 1M tokens | 500K tokens |
| Max output | 128K tokens | 450K tokens |
| Input types | File, Image, Text | File, Image, Text |
| Output types | Text | Text |
| Reasoning effort levels | Max, Extra high, High, Medium, Low | Extra high, High, Medium, Low |
| Default reasoning effort | High | High |
| Release date | September 28, 2026 | September 21, 2026 |
Features
Supported features
API features available for each model.
| Metric | Claude Sonnet 5.5 | |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Not supported | Supported |
| Stop sequences | Supported | Not supported |
| Deterministic seed | Not supported | Supported |
| Verbosity control | Supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
Claude Sonnet 5.5View full model details- Claude Sonnet 5.5 vs Claude Opus 5.5
- Claude Sonnet 5.5 vs Claude Fable 5.1
- Claude Sonnet 5.5 vs GPT-6 Astra
- Claude Sonnet 5.5 vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs Claude Opus 5
- Claude Sonnet 5.5 vs Claude Fable 5
- Claude Sonnet 5.5 vs Muse Spark 1.3
- Claude Sonnet 5.5 vs GPT-6 Sol
- Claude Sonnet 5.5 vs GPT-5.6 Sol
- Claude Sonnet 5.5 vs GLM 5.3
- Claude Sonnet 5.5 vs DeepSeek V4.1 Flash
- Claude Sonnet 5.5 vs GLM 5.3 Flash
- Claude Sonnet 5.5 vs MiMo-V2.6-Flash
- Claude Sonnet 5.5 vs Hy4 preview
- Claude Sonnet 5.5 vs GPT-6 Luna
- Claude Sonnet 5.5 vs DeepSeek V4 Flash 0731
- Grok 4.7 vs Claude Opus 5.5
- Grok 4.7 vs GPT-6 Astra
- Grok 4.7 vs GPT-6.1 Sol
- Grok 4.7 vs Muse Spark 1.3
- Grok 4.7 vs GPT-6 Sol
- Grok 4.7 vs GPT-5.6 Sol
- Grok 4.7 vs MiMo-V2.6-Pro
- Grok 4.7 vs Qwen3.8 Max (0902)
- Grok 4.7 vs GLM 5.3
- Grok 4.7 vs Grok 4.6
- Grok 4.7 vs Kimi K3
- Grok 4.7 vs Gemini 3.8 Flash
- Grok 4.7 vs Grok 4.5
Our take
Grok 4.7 is 1.3x cheaper for a typical chat. Claude Sonnet 5.5 scores higher on the Artificial Analysis Intelligence Index (56 vs 46.4). Claude Sonnet 5.5 has the larger context window (1M vs 500K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Claude Sonnet 5.5 or Grok 4.7 cheaper?
Grok 4.7 is cheaper for a typical chat (2K input tokens and 500 output tokens). Grok 4.7 costs $2 per 1M input tokens and $6 per 1M output tokens, while Claude Sonnet 5.5 costs $2 per 1M input tokens and $10 per 1M output tokens.
Which has a bigger context window, Claude Sonnet 5.5 or Grok 4.7?
Claude Sonnet 5.5 supports up to 1M tokens of context, compared with 500K for Grok 4.7.
Is Claude Sonnet 5.5 smarter than Grok 4.7?
On the Artificial Analysis Intelligence Index, Claude Sonnet 5.5 scores 56 and Grok 4.7 scores 46.4, putting Claude Sonnet 5.5 ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use Claude Sonnet 5.5 and Grok 4.7 at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Claude Sonnet 5.5 and Grok 4.7 answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Claude Sonnet 5.5 and Grok 4.7 at the same time. Compare the answers side by side and keep the best one.