Comparison
Claude Fable 5 vs Grok 4.3
Per input token, Grok 4.3 runs 88% cheaper than Claude Fable 5. Grok 4.3 is 95% cheaper on output tokens.
| Field | Claude Fable 5 | Grok 4.3 |
|---|---|---|
| Provider | Anthropic | xAI |
| Context window | 1M | 1M |
| Max output | 128K | — |
| Input / 1M | $10.00 | $1.2588% cheaper |
| Output / 1M | $50.00 | $2.5095% cheaper |
| Cached input / 1M | $1.00 | $0.2080% cheaper |
| Batch discount | 50% | — |
| Release date | 2026-06-09 | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Fable 5 | Grok 4.3 |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $1,800 | $150.00cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $2,850 | $277.50cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $1,375 | $143.75cheaper |
Claude Fable 5 vs Grok 4.3 FAQ
- Is Claude Fable 5 cheaper than Grok 4.3?
- Claude Fable 5 costs $10.00 per 1M input tokens versus $1.25 for Grok 4.3 — Grok 4.3 is 700% cheaper per input token.
- Which is cheaper for output tokens, Claude Fable 5 or Grok 4.3?
- Claude Fable 5 charges $50.00 per 1M output tokens; Grok 4.3 charges $2.50 per 1M output tokens.
- Which has the larger context window, Claude Fable 5 or Grok 4.3?
- Claude Fable 5 does, with a 1,000,000-token context window.
- Do Claude Fable 5 and Grok 4.3 offer cache pricing?
- Claude Fable 5 discounts cached input to $1.00 per 1M tokens. Grok 4.3 discounts cached input to $0.20 per 1M tokens.
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