Model comparison
Chatgpt 4o Latest 20250326 vs Claude Haiku 5.5
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 43.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 38.6.
Side by side
| Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 | |
|---|---|---|
| Provider | OpenAI | Anthropic |
| Noometry Index | 43.8 | 49.5 |
| Released | — | 2026-10-07 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 128K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.50 |
| Results tracked | 21 | 9 |
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Category by category
Coding Claude Haiku 5.5 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Claude Haiku 5.5: 49.2 (#50)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena WebDev | — | 1587 |
| LMArena Coding | 1413 | — |
Reasoning Claude Haiku 5.5 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Claude Haiku 5.5: 35.2 (#69)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| Kagi LLM Benchmark | 75% | — |
| NYT Connections (extended) | — | 65.7% |
| LMArena Hard Prompts | 1424 | — |
| Mystery Game Puzzles | — | 30% |
Math Claude Haiku 5.5 leads
Chatgpt 4o Latest 20250326: 38.6 (#134), Claude Haiku 5.5: 73.6 (#18)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 75.1% |
| FrontierMath Tier 4 | — | 46.3% |
| OTIS Mock AIME 2024-2025 | — | 98.9% |
| LMArena Math | 1407 | — |
Knowledge Claude Haiku 5.5 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Claude Haiku 5.5: 50.8 (#70)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| GPQA Diamond | — | 89.6% |
| SimpleQA Verified | — | 23.8% |
| Confabulations | 16.6% | — |
| LMArena Expert | 1401 | — |
Multimodal Claude Haiku 5.5 leads
Chatgpt 4o Latest 20250326: 39.6 (#58), Claude Haiku 5.5: 43.7 (#21)
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena Vision | 1243 | — |
| Furniture Assembly | — | 47.5% |
Multilingual Not comparable
Chatgpt 4o Latest 20250326: 52.9 (#76), Claude Haiku 5.5: —
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena Non-English | 1419 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1446 | — |
| LMArena German | 1423 | — |
| LMArena Japanese | 1405 | — |
| LMArena Korean | 1396 | — |
| LMArena Russian | 1429 | — |
| LMArena Spanish | 1434 | — |
Instruction Following Not comparable
Chatgpt 4o Latest 20250326: 74.0 (#107), Claude Haiku 5.5: —
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena Instruction Following | 1403 | — |
Long Context Not comparable
Chatgpt 4o Latest 20250326: 43.1 (#107), Claude Haiku 5.5: —
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena Longer Query | 1413 | — |
Writing & Preference Not comparable
Chatgpt 4o Latest 20250326: 62.6 (#72), Claude Haiku 5.5: —
| Benchmark | Chatgpt 4o Latest 20250326 | Claude Haiku 5.5 |
|---|---|---|
| LMArena Text | 1429 | — |
| LMArena Creative Writing | 1405 | — |
| EQ-Bench Creative Writing | 1501 | — |
| LMArena Multi-Turn | 1454 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Claude Haiku 5.5?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 43.8 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Claude Haiku 5.5 better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 41.6 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Claude Haiku 5.5 share?
0 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Claude Haiku 5.5 has 9.