Side-by-side comparison · models
Claude 3.5 Haiku vs Claude Fable 5.1
What we have checked about each, line by line. Every value shows where it came from and when we last confirmed it.
Models
Claude 3.5 Haiku
Fast Claude model for responsive assistance, classification, and lightweight agents.
Models
Claude Fable 5.1
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors.
Checked facts
Line by line
| Measure | Claude 3.5 Haiku | Claude Fable 5.1 |
|---|---|---|
| Input price | Not checked yet | $10.00 per million tokens |
| Output price | Not checked yet | $50.00 per million tokens |
| Price on amazon-bedrock | Not checked yet | $0.250 per million cached input tokens |
| Price on amazon-bedrock | Not checked yet | $10.00 per million input tokens |
| Price on amazon-bedrock | Not checked yet | $50.00 per million output tokens |
| Price on anthropic | Not checked yet | $0.250 per million cached input tokens |
| Price on anthropic | Not checked yet | $10.00 per million input tokens |
| Price on anthropic | Not checked yet | $50.00 per million output tokens |
| Price on azure | Not checked yet | $0.250 per million cached input tokens |
| Price on azure | Not checked yet | $10.00 per million input tokens |
| Price on azure | Not checked yet | $50.00 per million output tokens |
| Price on google-vertex | Not checked yet | $0.250 per million cached input tokens |
| Price on google-vertex | Not checked yet | $10.00 per million input tokens |
| Price on google-vertex | Not checked yet | $50.00 per million output tokens |
| Latest version | Not checked yet | anthropic/claude-fable-5.1-20260831 |
| Time to first token (ms) | Not checked yet | 115,050 |
| Time to first token (ms) on amazon-bedrock | Not checked yet | 6,488 |
| Time to first token (ms) on anthropic | Not checked yet | 3,702 |
| Time to first token (ms) on azure | Not checked yet | 2,679 |
| Time to first token (ms) on google-vertex | Not checked yet | 3,332 |
| Output speed (tokens a second) | Not checked yet | 59.8 |
| Output speed (tokens a second) on amazon-bedrock | Not checked yet | 51 |
| Output speed (tokens a second) on anthropic | Not checked yet | 63 |
| Output speed (tokens a second) on azure | Not checked yet | 46 |
| Output speed (tokens a second) on google-vertex | Not checked yet | 58 |
| Tokens served on OpenRouter in a day | Not checked yet | 27.1B (for 10 Nov 2026) |
| Tool calls on OpenRouter in a day | Not checked yet | 121.1K (for 10 Nov 2026) |
| Gpqa diamond | 38.1% (for 22 Oct 2024) | Not checked yet |
| Aider polyglot | 28% (for 22 Oct 2024) | Not checked yet |
| Balrog | 19.3% (for 22 Oct 2024) | Not checked yet |
| Cadeval | 32% (for 22 Oct 2024) | Not checked yet |
| Dtbench | 56.7% (for 22 Oct 2024) | 97.6% (for 1 Sept 2026) |
| Frontiermath 2025 02 28 private | 0.3% (for 22 Oct 2024) | Not checked yet |
| Geobench | 34% (for 22 Oct 2024) | Not checked yet |
| Lech mazur writing | 73.5% (for 22 Oct 2024) | Not checked yet |
| Math level 5 | 46.4% (for 22 Oct 2024) | Not checked yet |
| Mmlu | 74.3% (for 22 Oct 2024) | Not checked yet |
| Weirdml | 30.7% (for 22 Oct 2024) | 92.9% (for 1 Sept 2026) |
| Otis mock aime 2024 2025 | 4.3% (saturated benchmark: the top models all score near the ceiling) (for 22 Oct 2024) | 100% (saturated benchmark: the top models all score near the ceiling) (for 1 Sept 2026) |
| Artificial Analysis Intelligence Index | Not checked yet | 50 |
| Artificial Analysis Coding Index | Not checked yet | 81.6 |
| Artificial Analysis Agentic Index | Not checked yet | 57.9 |
| LMArena text rating (Elo) | Not checked yet | 1,512 |
| LMArena web development rating (Elo) | Not checked yet | 1,742 |
| LMArena vision rating (Elo) | Not checked yet | 1,322 |
| Design Arena rating (Elo) | Not checked yet | 1,397 |
| Frontiermath tiers 1 3 v2 private | Not checked yet | 90.2% (for 1 Sept 2026) |
| Simpleqa verified | Not checked yet | 70.8% (for 1 Sept 2026) |
| Arc agi 2 | Not checked yet | 90% (for 1 Sept 2026) |
| Apex agents | Not checked yet | 68.6% (for 1 Sept 2026) |
| Arc agi | Not checked yet | 97.5% (for 1 Sept 2026) |
| Chess puzzles | Not checked yet | 48% (for 1 Sept 2026) |
| Ebr bench | Not checked yet | 57.1% (for 1 Sept 2026) |
| Frontiercode | Not checked yet | 50.9% (for 1 Sept 2026) |
| Frontiermath tier 4 v2 private | Not checked yet | 87.8% (for 1 Sept 2026) |
| Frontierswe | Not checked yet | 56.3% (for 1 Sept 2026) |
| Furniture assembly | Not checked yet | 70% (for 1 Sept 2026) |
| Gso bench | Not checked yet | 88.2% (for 1 Sept 2026) |
| Lmca | Not checked yet | 65.5% (for 1 Sept 2026) |
| Mirrorcode | Not checked yet | 73.3% (for 1 Sept 2026) |
| Mystery game puzzles | Not checked yet | 58% (for 1 Sept 2026) |
| Proofbench | Not checked yet | 100% (for 1 Sept 2026) |
| Remote labor index | Not checked yet | 17.9% (for 1 Sept 2026) |
| Spireclimb | Not checked yet | 2% (for 1 Sept 2026) |
| Weirdml v3 | Not checked yet | 43.5% (for 1 Sept 2026) |
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