THE TICKER · HEAD-TO-HEAD · CHECKED DAILY · LAST CHANGE 2026-09-06
CLAUDE FABLE 5 VS CLAUDE FABLE 5.1
Anthropic vs Anthropic, in USD per million tokens, cross-checked daily against the public pricing dataset. Same jobs, both meters running.
Effectively a tie: for the same job (a 1,000-token prompt with a 3,000-token reply), Claude Fable 5 and Claude Fable 5.1 bill within 5% of each other. Pick on quality, latency or taste — price won't settle this one.
SIDE BY SIDE
| Claude Fable 5 → | Claude Fable 5.1 → | |
|---|---|---|
| Vendor | Anthropic | Anthropic |
| Input / MTok | $10.00 | $10.00 |
| Output / MTok | $50.00 | $50.00 |
| Output multiple | 5.0x | 5.0x |
| 1K prompt + 3K reply | $0.16 | $0.16 |
SAME JOB, BOTH BILLS
| Scenario | Claude Fable 5 | Claude Fable 5.1 | Gap |
|---|---|---|---|
| A typical prompt | $0.05 | $0.05 | — |
| A 20-turn conversation | $0.24 | $0.24 | — |
| Summarizing a 10-page document | $0.24 | $0.24 | — |
| One agent run | $0.62 | $0.62 | — |
| A code review request | $0.20 | $0.20 | — |
Output sizes use the same editorial ratios as the Burn Calculator. Estimates, not invoices — and price is not a benchmark: the cheaper model is only a bargain if it does the job.
SETTLE IT WITH YOUR OWN PROMPT
Paste a real prompt into the Burn Calculator and see what it costs on Claude Fable 5, Claude Fable 5.1 and the other 23 models on the board — plus how much of it is waste either way.