Model comparison
Claude Haiku 5.5 vs GPT-4.1 mini
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 33.6 on the Noometry Index.
Last verified . 5 shared benchmarks.
Summary
- They share 5 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 5 categories and GPT-4.1 mini in 0 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 24.1.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 75.1% for Claude Haiku 5.5 and 6.7% for GPT-4.1 mini.
- Claude Haiku 5.5 is cheaper at $0.10 / $0.50 per million input/output tokens, against $0.40 / $1.60 for GPT-4.1 mini.
- GPT-4.1 mini accepts more context: 1.05M tokens versus 1M.
Side by side
| Claude Haiku 5.5 | GPT-4.1 mini | |
|---|---|---|
| Provider | Anthropic | OpenAI |
| Noometry Index | 49.5 | 33.6 |
| Released | 2026-10-07 | 2025-04-14 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 1.05M |
| Max output | 128K | 33K |
| Input $ / M tokens | $0.10 | $0.40 |
| Output $ / M tokens | $0.50 | $1.60 |
| Results tracked | 9 | 47 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), GPT-4.1 mini: 30.6 (#293)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| SWE-bench Verified (bash only) | — | 23.9% |
| Aider Polyglot | — | 32.4% |
| LMArena WebDev | 1587 | — |
| SciCode | — | 40.4% |
| WeirdML | — | 37.6% |
| BigCodeBench Instruct | — | 48.9% |
| LMArena Coding | — | 1367 |
| CadEval | — | 16% |
Agentic & Tool Use Not comparable
Claude Haiku 5.5: —, GPT-4.1 mini: 33.3 (#55)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 50.5% |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), GPT-4.1 mini: 10.8 (#340)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| Mystery Game Puzzles | 30% | 7% |
| ARC-AGI-2 | — | 0% |
| Kagi LLM Benchmark | — | 48.6% |
| NYT Connections (extended) | 65.7% | — |
| ARC-AGI-1 | — | 3.5% |
| CritPt | — | 0% |
| Chess Puzzles | — | 7% |
| LMArena Hard Prompts | — | 1349 |
| DTBench | — | 68.8% |
| LMCA | — | 21.1% |
| Epoch Capabilities Index | — | 135.01 |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), GPT-4.1 mini: 24.1 (#270)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | 6.7% |
| OTIS Mock AIME 2024-2025 | 98.9% | 44.7% |
| FrontierMath Tier 4 | 46.3% | — |
| Omni-MATH | — | 49.1% |
| LMArena Math | — | 1343 |
| MATH Level 5 | — | 87.3% |
| FrontierMath (Feb 2025 set) | — | 4.5% |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), GPT-4.1 mini: 34.7 (#194)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| GPQA Diamond | 89.6% | 65.8% |
| SimpleQA Verified | 23.8% | 12.7% |
| MMLU-Pro | — | 78.3% |
| GPQA (HELM) | — | 61.4% |
| LMArena Expert | — | 1338 |
Multimodal Claude Haiku 5.5 leads
Claude Haiku 5.5: 43.7 (#21), GPT-4.1 mini: 35.8 (#82)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| LMArena Vision | — | 1181 |
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, GPT-4.1 mini: 45.7 (#166)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| LMArena Non-English | — | 1318 |
| LMArena Chinese | — | 1329 |
| LMArena French | — | 1358 |
| LMArena German | — | 1351 |
| LMArena Japanese | — | 1290 |
| LMArena Korean | — | 1298 |
| LMArena Russian | — | 1324 |
| LMArena Spanish | — | 1319 |
Instruction Following Not comparable
Claude Haiku 5.5: —, GPT-4.1 mini: 73.7 (#118)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| IFEval | — | 90.4% |
| LMArena Instruction Following | — | 1333 |
Long Context Not comparable
Claude Haiku 5.5: —, GPT-4.1 mini: 31.8 (#275)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| Fiction.LiveBench | — | 44.4% |
| LMArena Longer Query | — | 1344 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, GPT-4.1 mini: 48.6 (#199)
| Benchmark | Claude Haiku 5.5 | GPT-4.1 mini |
|---|---|---|
| LMArena Text | — | 1340 |
| LMArena Creative Writing | — | 1300 |
| EQ-Bench Creative Writing | — | 1147 |
| WildBench | — | 83.8% |
| LMArena Multi-Turn | — | 1354 |
Frequently asked questions
Is Claude Haiku 5.5 better than GPT-4.1 mini?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 33.6 on the Noometry Index.
Which is cheaper, Claude Haiku 5.5 or GPT-4.1 mini?
Claude Haiku 5.5 is cheaper. It lists at $0.10 per million input tokens and $0.50 per million output tokens; GPT-4.1 mini lists at $0.40 and $1.60.
Is Claude Haiku 5.5 or GPT-4.1 mini better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 30.6 in the Noometry coding category.
Which has the bigger context window?
GPT-4.1 mini does, with 1.05M tokens against 1M.
How many benchmarks do Claude Haiku 5.5 and GPT-4.1 mini share?
5 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and GPT-4.1 mini has 47.