Rate
Claude Fable 5.1 vs Claude Haiku 4.5: price
Claude Haiku 4.5 is 10.0× cheaper than Claude Fable 5.1 for a typical chat workload (1,500 tokens in, 500 out).
| Item | Claude Fable 5.1 | Claude Haiku 4.5 |
|---|---|---|
| Input per 1M tokens | $10.00 | $1.00 |
| Output per 1M tokens | $50.00 | $5.00 |
| Cached input per 1M | $0.25 | $0.10 |
| 1,000 chat messages1,500 tokens in, 500 out each | $40.00 | $4.00 |
| Summarize a 50-page PDF30,000 tokens in, 1,000 out | $0.35 | $0.035 |
| One coding-agent task60,000 tokens in, 4,000 out, no caching | $0.80 | $0.08 |
List prices checked September 28, 2026. Price is half the story: see how people rate each one today.
Claude Fable 5.1 vs Claude Haiku 4.5 in numbers
Output, usually the bigger part of the bill, costs $50.00 on Claude Fable 5.1 and $5.00 on Claude Haiku 4.5, so Claude Haiku 4.5 is 10.0× cheaper there. Input costs $10.00 versus $1.00 per million tokens. For a coding-agent task (60,000 tokens in, 4,000 out) that is $0.80 on Claude Fable 5.1 and $0.08 on Claude Haiku 4.5. Claude Fable 5.1 accepts 1M tokens of context and Claude Haiku 4.5 200K tokens. Claude Fable 5.1 came out on September 1, 2026 and Claude Haiku 4.5 on October 15, 2025.
Both are Anthropic models. Estimate your own bill for both in the cost calculator.
Which one feels dumber today?
- Claude Fable 5.1Anthropic
–no votes yet - Claude Haiku 4.5Anthropic–no votes yet
Frequently asked questions
Is Claude Fable 5.1 or Claude Haiku 4.5 cheaper?
Claude Haiku 4.5 is 10.0× cheaper than Claude Fable 5.1 for a typical chat workload (1,500 tokens in, 500 out). Output, usually the bigger part of the bill, costs $50.00 on Claude Fable 5.1 and $5.00 on Claude Haiku 4.5, so Claude Haiku 4.5 is 10.0× cheaper there.
Which is better, Claude Fable 5.1 or Claude Haiku 4.5?
It depends on the task, and price is only part of it. Check how people rate each one today on the Claude Fable 5.1 and Claude Haiku 4.5 pages, and read what users report in Discussions.