Claude Fable 5 vs Claude Haiku 4.5
Claude Fable 5 and Claude Haiku 4.5 are both current anthropic production-tier models. Claude Haiku 4.5 is meaningfully cheaper at $1 / $5 per 1M. Claude Fable 5 has a 1M context window — about 5× the 200k of Claude Haiku 4.5. Claude Fable 5 leads on coding, reasoning, general knowledge.
Specs side by side
| Metric | Anthropic Claude Fable 5 | Anthropic Claude Haiku 4.5 |
|---|---|---|
| Input price (per 1M) | $10 | $1 |
| Output price (per 1M) | $50 | $5 |
| Context window | 1M tokens | 200k tokens |
| Speed tier | slow | fast |
| Open weights | No | No |
| EU region | Yes | Yes |
| Free tier | No | No |
| Prompt caching | Yes | Yes |
| Vision input | Yes | Yes |
| Extended thinking | Yes | No |
When to choose each
Choose Claude Fable 5 if…
- You need 1M context (5× more than Claude Haiku 4.5)
- Coding is central to your workload
- Reasoning is central to your workload
Choose Claude Haiku 4.5 if…
- Cost is a priority ($1 / $5 per 1M vs $10 / $50 per 1M)
- Low latency matters (fast vs slow)
Benchmark delta
Claude Fable 5 leads on
- Coding
- Reasoning
- General knowledge
- Long-context retrieval
- Instruction following
- Multilingual
- Vision
- Tool use
Claude Haiku 4.5 leads on
Claude Haiku 4.5 has no meaningful benchmark lead in this pair.
FAQ — Claude Fable 5 vs Claude Haiku 4.5
Claude Fable 5 vs Claude Haiku 4.5 — which is better?
Claude Fable 5 and Claude Haiku 4.5 are both current anthropic production-tier models. Claude Haiku 4.5 is meaningfully cheaper at $1 / $5 per 1M. Claude Fable 5 has a 1M context window — about 5× the 200k of Claude Haiku 4.5. Claude Fable 5 leads on coding, reasoning, general knowledge. The right pick depends on your use case — see "When to choose each" above for a data-driven decision.
How does Claude Fable 5 pricing compare to Claude Haiku 4.5?
Claude Fable 5 costs $10 / $50 per 1M vs Claude Haiku 4.5 at $1 / $5 per 1M. Claude Haiku 4.5 is cheaper on output tokens by roughly 900%. Both support prompt caching, which reduces effective cost by 80-90% on repeat system prompts.
Does Claude Fable 5 or Claude Haiku 4.5 have the bigger context window?
Claude Fable 5 has a 1M-token context window — 5× the 200k context of Claude Haiku 4.5. Enough for entire codebases, books, or multi-document RAG.
Is there a free tier for Claude Fable 5 or Claude Haiku 4.5?
Claude Fable 5: no — No free API tier; available via Claude.ai paid plans. Claude Haiku 4.5: no — No free API tier; new accounts get starter credits.
Which is better for coding — Claude Fable 5 or Claude Haiku 4.5?
Claude Fable 5 leads on coding benchmarks (Claude Fable 5: 98/100, Claude Haiku 4.5: 82/100). For production coding agents also weigh tool-use performance — Claude Fable 5 scores 97, Claude Haiku 4.5 scores 88.