Claude Sonnet 5.5 vs Grok 4.7
Claude Sonnet 5.5 scores higher on the Models at Work leaderboard (84 vs 58 out of 100). They cost about the same per million tokens ($4 vs $3.74 blended). On Artificial Analysis' independent Intelligence Index, Claude Sonnet 5.5 leads 56 to 46.
| Claude Sonnet 5.5 · Anthropic | Grok 4.7 · xAI | |
|---|---|---|
| Leaderboard rank | #4 | #12 |
| Score (0–100) | 84 | 58 |
| Tier | Workhorse | Workhorse |
| Price per 1M tokens | $2 in · $10 out | $3.74 blended (estimate) |
| Context window | 1M | 500K |
| Open weights | No | No |
| Artificial Analysis Intelligence Index | 56 | 46 |
| Best for | Production coding assistants, High-volume agents, Default model for most teams | X-integrated products |
Choose Claude Sonnet 5.5 if…
- you need production coding assistants
- you need high-volume agents
- you need default model for most teams
The value pick of the table: second on the index at a fifth of the Opus price, and the fastest of the top five.
Choose Grok 4.7 if…
- you need x-integrated products
Mid-table on the index at a frontier price, with a smaller context window than everyone above it.
Caveats: 500K context is the smallest in the table. Listed by Artificial Analysis under the creator's current corporate name.
What practitioners say
Claude Sonnet 5.5: Less discussed than its siblings because it just works; the October cache-read price cut to $0.10 per million was the news.
Questions people ask
Which is better, Claude Sonnet 5.5 or Grok 4.7?
Claude Sonnet 5.5 scores higher on the Models at Work leaderboard (84 vs 58 out of 100). They cost about the same per million tokens ($4 vs $3.74 blended). On Artificial Analysis' independent Intelligence Index, Claude Sonnet 5.5 leads 56 to 46.
When should I choose Claude Sonnet 5.5 over Grok 4.7?
Choose Claude Sonnet 5.5 for production coding assistants, high-volume agents, default model for most teams. The value pick of the table: second on the index at a fifth of the Opus price, and the fastest of the top five.
When should I choose Grok 4.7 over Claude Sonnet 5.5?
Choose Grok 4.7 for x-integrated products. Mid-table on the index at a frontier price, with a smaller context window than everyone above it.
Which is cheaper, Claude Sonnet 5.5 or Grok 4.7?
Claude Sonnet 5.5 costs $2 per million input tokens and $10 per million output tokens on Anthropic's list price (Claude pricing, read Oct 10, 2026). xAI does not publish a simple list price for Grok 4.7; Artificial Analysis estimates a blended $3.74 per million tokens (three input to one output).
Scores come from the Models at Work leaderboard: Score is 0 to 100: 50% independent evals normalised within this table, 20% price-performance, 15% practitioner sentiment from Signals and community threads, 15% operational fit (context, speed, availability, open weights). Models within three points are a tie in practice. Vendor-published figures are labelled as such and never counted as independent. Prices are vendor list prices where published; blended figures assume three input tokens per output token.