Grok 4.7 vs Claude Opus 5.5
Grok 4.7 costs $2.00 / $6.00 and Claude Opus 5.5 costs $4.00 / $20.00 per million input / output tokens. At a typical 3:1 mix, Grok 4.7 is 2.7× cheaper than Claude Opus 5.5.
Input
$2.00
per 1M
Output
$6.00
per 1M
Cached
$0.50
500K context
Claude Opus 5.5
Anthropic
Input
$4.00
per 1M
Output
$20.00
per 1M
Cached
$0.20
1M context
Side by side
Green marks the cheaper price, larger context window, bigger discount or higher score.
| Detail | Grok 4.7 | Claude Opus 5.5 |
|---|---|---|
| Input per 1M | $2.00 | $4.00 |
| Output per 1M | $6.00 | $20.00 |
| Blended per 1M (3:1) | $3.00 | $8.00 |
| Cached input per 1M | $0.50 | $0.20 |
| Batch or off-peak discount | None | 50% (batch) |
| Long prompts | Over 200K: $4 / $12 | Same rate at any length |
| Context window | 500K | 1M |
| Released | 21 Sep 2026 | 22 Sep 2026 |
| Open weights | No | No |
| Arena text score | — | 1509 |
| Verified | 27 Sep 2026 | 27 Sep 2026 |
Sources: xAI pricing and Anthropic pricing.
Monthly cost on three workloads
List prices, no batch discount. The cached share applies where a model has a cache rate.
| Workload | Grok 4.7 | Claude Opus 5.5 | Difference |
|---|---|---|---|
| Customer chat assistant50,000 conversations a month, about 2,000 tokens in and 400 out each; 50% cached | $245 | $610 | $365 |
| Document Q&A (RAG)20,000 questions a month over retrieved documents, 12,000 in and 600 out; 30% cached | $444 | $926 | $482 |
| Coding agent400 tasks a month, 40 steps each with a growing context; 85% cached | $592 | $738 | $146 |
How they differ
- Grok 4.7 is cheaper on input ($2 vs $4).
- Grok 4.7 is cheaper on output ($6 vs $20), which matters most for long answers and reasoning models.
- Claude Opus 5.5 accepts longer prompts (1M vs 500K tokens).
- Cached input is cheaper on Claude Opus 5.5 ($0.20 vs $0.50), which favours agents and chat apps that resend the same context.
- Only Claude Opus 5.5 offers a batch discount for jobs that can wait.
Recent changes
All changes- ▼ 20%Claude Opus 5.5 launched at $4 / $20 per 1M tokens, 20% below Opus 5.
- xAI launched Grok 4.7 at $2 / $6 for prompts under 200K tokens.
- xAI launched Grok 4.6 at $2 / $6.
- Anthropic retired Claude Opus 4.1.
- Anthropic launched Claude Opus 5 at $5 / $25.
