Comparing 4
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Claude Haiku 5.5vsClaude Sonnet 5.5vsClaude Opus 5.5vsClaude Fable 5.1
Send one prompt to every model and read the answers side by side, with speed and cost for each.
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Claude Haiku 5.5AnthropicNEW Fast Claude model for responsive assistance, classification, and lightweight agents | Claude Sonnet 5.5AnthropicNEW Fast Claude model for everyday coding, agents, and knowledge work | Claude Opus 5.5AnthropicNEW Claude model for long-running agentic coding and knowledge work | Claude Fable 5.1Anthropic Claude model for demanding reasoning and long-horizon agentic work | |
|---|---|---|---|---|
| Intelligence | ||||
| Intelligence index | 43.4 | 56 | 57.6 | 53.4 |
| Price | ||||
| Input, $ per 1M | $0.10 | $2 | $4 | $10 |
| Output, $ per 1M | $0.50 | $10 | $20 | $50 |
| Typical message (500 in / 250 out) | $0.00017 | $0.0035 | $0.0070 | $0.0175 |
| Repeated input, cached | $0.01 · 10× cheaper | $0.10 · 20× cheaper | $0.20 · 20× cheaper | $0.25 · 40× cheaper |
| Prompts over 200K tokens | Same price | Same price | Same price | Same price |
| Limits | ||||
| Context window | 1M | 1M | 1M | 1M |
| Longest answer | 128K tokens | 128K tokens | 128K tokens | 128K tokens |
| Knowledge cutoff | Jun 2026 | Jun 2026 | Jun 2026 | Jun 2026 |
| What it can take and do | ||||
| Accepts | TextImagePDF | TextImagePDF | TextImagePDF | TextImagePDF |
| Reasoning effort | Low · Med · High · X-high · Max | Low · Med · High · X-high · Max | Low · Med · High · X-high · Max | Low · Med · High · X-high · Max |
| Tool use | Yes | Yes | Yes | Yes |
| Guaranteed JSON output | Yes | Yes | Yes | Yes |
| Availability | ||||
| Released | 7 Oct 2026 | 28 Sept 2026 | 22 Sept 2026 | 1 Sept 2026 |
| Open weights | No | No | No | No |
| API providers offering it | 33 | 34 | 36 | 37 |