Comparison
Claude Opus 4.8 vs Grok 4.3
Grok 4.3 costs 75% less per input token than Claude Opus 4.8. Grok 4.3 is 90% cheaper on output tokens.
| Field | Claude Opus 4.8 | Grok 4.3 |
|---|---|---|
| Provider | Anthropic | xAI |
| Context window | 1M | 1M |
| Max output | 128K | — |
| Input / 1M | $5.00 | $1.2575% cheaper |
| Output / 1M | $25.00 | $2.5090% cheaper |
| Cached input / 1M | $0.50 | $0.2060% cheaper |
| Batch discount | 50% | — |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Opus 4.8 | Grok 4.3 |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $900.00 | $150.00cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $1,425 | $277.50cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $687.50 | $143.75cheaper |
Claude Opus 4.8 vs Grok 4.3 FAQ
- Is Claude Opus 4.8 cheaper than Grok 4.3?
- Claude Opus 4.8 costs $5.00 per 1M input tokens versus $1.25 for Grok 4.3 — Grok 4.3 is 300% cheaper per input token.
- Which is cheaper for output tokens, Claude Opus 4.8 or Grok 4.3?
- Claude Opus 4.8 charges $25.00 per 1M output tokens; Grok 4.3 charges $2.50 per 1M output tokens.
- Which has the larger context window, Claude Opus 4.8 or Grok 4.3?
- Claude Opus 4.8 does, with a 1,000,000-token context window.
- Do Claude Opus 4.8 and Grok 4.3 offer cache pricing?
- Claude Opus 4.8 discounts cached input to $0.50 per 1M tokens. Grok 4.3 discounts cached input to $0.20 per 1M tokens.
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