Claude Haiku 5.5
| Released | 2026-10-07 |
|---|---|
| Price per 1M | $0.10 in · $0.50 out |
| Overall score | 59.5 · rank 34 |
| Context window | 1,000,000 tokens |
| Provider | Anthropic |
| Weights | Proprietary |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 59.5 | 34 | 47 |
| Overall: Coding | 61.5 | 18 | 39 |
| Overall: Reasoning | 59.4 | 40 | 19 |
| Overall: Agentic work | 61.1 | 20 | 36 |
| Overall: Frontend | 61.4 | 13 | 14 |
| Coding | 62.2 | 14 | 11 |
| Agents | 60.9 | 20 | 13 |
| Reasoning | 60.2 | 42 | 12 |
| Math | 61.1 | 23 | 4 |
| Knowledge | 54.3 | 67 | 3 |
| Frontend | 61.0 | 15 | 3 |
| General | 51.7 | 89 | 1 |
| Value vs price | +16.5 | 4 |
Configurations
| Configuration | Balanced | Benchmarks |
|---|---|---|
| Unspecified setting | 59.5 ±2.5 | 9 |
| High | 57.8 ±2.5 | 9 |
| Low | 54.6 ±4.0 | 6 |
| Max | 60.1 ±1.1 | 32 |
| Medium | 57.0 ±4.0 | 5 |
| Extra High | 60.9 ±3.6 | 7 |
Evidence
Coding 62.2 ±1.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| CursorBench | 48.4% | Epoch AI | 2026-11-11 |
| FrontierSWE | 43.8% | Epoch AI | 2026-11-11 |
| FrontierCode | 46.4% | Epoch AI | 2026-11-11 |
| Code Migration v1.1 | 52.4% | Vals AI | 2026-11-09 |
| LiveBench 2.0 Coding | 77.6% | LiveBench | 2026-11-06 |
| WeirdML v3 | 11.7% | Epoch AI | 2026-11-11 |
| MirrorCode | 78.9% | Epoch AI | 2026-10-21 |
| IOI | 47.3% | Vals AI | 2026-10-29 |
| SWE-bench Multimodal | 44.0% | Vals AI | 2026-11-09 |
| SciCode | 55.0% | Epoch AI | 2026-11-11 |
| ProgramBench | 2.5% | Vals AI | 2026-11-09 |
Agents 60.9 ±0.9
| Benchmark | Result | Source | Date |
|---|---|---|---|
| Terminal-Bench 4.0 (Vals run) | 36.4% | Vals AI | 2026-11-09 |
| SRE Bench | 5.7% | Vals AI | 2026-11-05 |
| Terminal-Bench-Science | 10.0% | Vals AI | 2026-11-09 |
| APEX-Agents | 56.1% | Epoch AI | 2026-11-11 |
| LiveBench 2.0 Agentic | 47.9% | LiveBench | 2026-11-06 |
| LiveBench 2.0 Browser Use | 69.5% | LiveBench | 2026-11-06 |
| EMB v1.1 (Excel financial modeling) | 65.5% | Vals AI | 2026-11-09 |
| LiveBench 2.0 Research | 84.3% | LiveBench | 2026-11-06 |
| Tax Agent Bench | 31.9% | Vals AI | 2026-11-09 |
| Finance Agent v2.1 | 65.4% | Vals AI | 2026-11-09 |
| Vending-Bench 2 | $3,602 | Epoch AI | 2026-11-11 |
| HLAB-Vals 1.1 (legal agent) | 4.2% | Vals AI | 2026-11-09 |
| CyberBench v1.1 | 75.5% | Vals AI | 2026-11-05 |
Reasoning 60.2 ±2.0
| Benchmark | Result | Source | Date |
|---|---|---|---|
| ARC-AGI-2 | 61.3% | Epoch AI | 2026-11-11 |
| ARC-AGI-2 (ARC Prize verified) | 61.3% | ARC Prize | 2026-11-11 |
| Extended NYT Connections | 65.7% | Lech Mazur | 2026-11-10 |
| MysteryMechanism | 35.1% | Vals AI | 2026-11-09 |
| GPQA Diamond | 89.7% | Epoch AI | 2026-10-09 |
| CritPt | 22.6% | Epoch AI | 2026-11-11 |
| ARC-AGI-1 (ARC Prize verified) | 89.0% | ARC Prize | 2026-11-11 |
| ARC-AGI-1 | 89.0% | Epoch AI | 2026-11-11 |
| BioMysteryBench | 70.4% | Vals AI | 2026-11-09 |
| ARC-AGI-3 | 2.8% | ARC Prize | 2026-11-11 |
| Chess Puzzles | 55.0% | Epoch AI | 2026-10-13 |
| LiveBench 2.0 Reasoning | 82.4% | LiveBench | 2026-11-06 |
| Mystery Game Puzzles | 30.0% | Epoch AI | 2026-10-07 |
| LiveBench 2.0 Data Analysis | 53.1% | LiveBench | 2026-11-06 |
Math 61.1 ±1.2
| Benchmark | Result | Source | Date |
|---|---|---|---|
| FrontierMath Tiers 1-3 | 75.1% | Epoch AI | 2026-10-07 |
| FrontierMath Tier 4 | 46.3% | Epoch AI | 2026-10-07 |
| OTIS Mock AIME 2024-2025 | 98.9% | Epoch AI | 2026-10-07 |
| ProofBench v1.1 | 89.0% | Vals AI | 2026-11-09 |
| ProofBench | 89.0% | Epoch AI | 2026-11-11 |
Knowledge 54.3 ±6.8
| Benchmark | Result | Source | Date |
|---|---|---|---|
| SimpleQA Verified | 23.8% | Epoch AI | 2026-10-09 |
| Humanity's Last Exam | 30.1% | Epoch AI | 2026-11-11 |
| Legal Research Bench | 43.8% | Vals AI | 2026-11-09 |
Frontend 61.0 ±3.4
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LiveBench 2.0 Design | 79.3% | LiveBench | 2026-11-06 |
| Vibe Code Bench v1.1 | 90.4% | Vals AI | 2026-11-09 |
| LMArena WebDev | 1,595 | LMArena | 2026-11-09 |
General 51.7 ±4.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LMArena Text | 1,422 | LMArena | 2026-11-09 |
Results not used in the score
| Benchmark | Result | Source | Why not used |
|---|---|---|---|
| ARC-AGI-1 | 87.5% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-1 | 81.5% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-1 | 50.3% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-1 | 57.3% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-1 (ARC Prize verified) | 87.5% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-1 (ARC Prize verified) | 81.5% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-1 (ARC Prize verified) | 50.3% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-1 (ARC Prize verified) | 57.3% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-2 | 30.7% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-2 | 2.8% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-2 | 9.4% | Epoch AI | A stronger configuration result was used |
| ARC-AGI-2 (ARC Prize verified) | 30.7% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-2 (ARC Prize verified) | 2.8% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-2 (ARC Prize verified) | 9.4% | ARC Prize | A stronger configuration result was used |
| ARC-AGI-3 | 0.5% | ARC Prize | A stronger configuration result was used |
| Chess Puzzles | 24.0% | Epoch AI | A stronger configuration result was used |
| CritPt | 18.9% | Epoch AI | A stronger configuration result was used |
| CritPt | 18.6% | Epoch AI | A stronger configuration result was used |
| CritPt | 9.1% | Epoch AI | A stronger configuration result was used |
| CritPt | 12.9% | Epoch AI | A stronger configuration result was used |
| CursorBench | 44.3% | Epoch AI | A stronger configuration result was used |
| CursorBench | 42.3% | Epoch AI | A stronger configuration result was used |
| CursorBench | 30.9% | Epoch AI | A stronger configuration result was used |
| CursorBench | 36.9% | Epoch AI | A stronger configuration result was used |
| OTIS Mock AIME 2024-2025 | 97.2% | Epoch AI | A stronger configuration result was used |
| SciCode | 51.7% | Epoch AI | A stronger configuration result was used |
| SciCode | 48.7% | Epoch AI | A stronger configuration result was used |
| SciCode | 49.2% | Epoch AI | A stronger configuration result was used |
| SciCode | 49.0% | Epoch AI | A stronger configuration result was used |
Names matched to this model
claude-haiku-5-5