Comparison
Claude Fable 5 vs Claude Opus 4.8
Claude Opus 4.8 costs 50% less per input token than Claude Fable 5. On generated (output) tokens, Claude Fable 5 costs 50% more than Claude Opus 4.8.
| Field | Claude Fable 5 | Claude Opus 4.8 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Context window | 1M | 1M |
| Max output | 128K | 128K |
| Input / 1M | $10.00 | $5.0050% cheaper |
| Output / 1M | $50.00 | $25.0050% cheaper |
| Cached input / 1M | $1.00 | $0.5050% cheaper |
| Batch discount | 50% | 50% |
| Release date | 2026-06-09 | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Claude Fable 5 | Claude Opus 4.8 |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $1,800 | $900.00cheaper |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $2,850 | $1,425cheaper |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $1,375 | $687.50cheaper |
Claude Fable 5 vs Claude Opus 4.8 FAQ
- Is Claude Fable 5 cheaper than Claude Opus 4.8?
- Claude Fable 5 costs $10.00 per 1M input tokens versus $5.00 for Claude Opus 4.8 — Claude Opus 4.8 is 100% cheaper per input token.
- Which is cheaper for output tokens, Claude Fable 5 or Claude Opus 4.8?
- Claude Fable 5 charges $50.00 per 1M output tokens; Claude Opus 4.8 charges $25.00 per 1M output tokens.
- Which has the larger context window, Claude Fable 5 or Claude Opus 4.8?
- Claude Fable 5 does, with a 1,000,000-token context window.
- Do Claude Fable 5 and Claude Opus 4.8 offer cache pricing?
- Claude Fable 5 discounts cached input to $1.00 per 1M tokens. Claude Opus 4.8 discounts cached input to $0.50 per 1M tokens.
Looking for another matchup? See all comparisons.