Model comparison
Grok 4.5 vs MiniMax-M2.5
Grok 4.5 is the stronger model overall, scoring 55.0 to 38.3 on the Noometry Index. MiniMax-M2.5 costs 5.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Last verified . 27 shared benchmarks.
MiniMaxSummary
- They share 27 benchmarks with published results for both. Grok 4.5 scores higher in 9 categories and MiniMax-M2.5 in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 17.5.
- The biggest single-benchmark swing is NYT Connections (extended): 79.9% for Grok 4.5 and 16.8% for MiniMax-M2.5.
- MiniMax-M2.5 is cheaper at $0.30 / $1.20 per million input/output tokens, against $2 / $6 for Grok 4.5.
- Grok 4.5 accepts more context: 500K tokens versus 205K.
- MiniMax-M2.5 has downloadable open weights; the other is API-only.
Side by side
| Grok 4.5 | MiniMax-M2.5 | |
|---|---|---|
| Provider | xAI | MiniMax |
| Noometry Index | 55.0 | 38.3 |
| Released | 2026-07-08 | 2026-02-12 |
| Weights | Proprietary | Open |
| Context window | 500K | 205K |
| Max output | 500K | 131K |
| Input $ / M tokens | $2 | $0.30 |
| Output $ / M tokens | $6 | $1.20 |
| Results tracked | 52 | 33 |
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Category by category
Coding Grok 4.5 leads
Grok 4.5: 52.2 (#35), MiniMax-M2.5: 48.1 (#58)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena WebDev | 1553 | 1387 |
| LMArena Coding | 1474 | 1381 |
| ALE-Bench | 1,309 | 618.17 |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| SWE-bench Verified (bash only) | — | 75.8% |
| SWE-bench Multilingual | — | 68.3% |
| SciCode | 54.1% | — |
| WeirdML | 46.4% | — |
Agentic & Tool Use Grok 4.5 leads
Grok 4.5: 44.4 (#17), MiniMax-M2.5: 30.4 (#77)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| Vending-Bench 2 | 3,887 | -23.16 |
| Terminal-Bench | — | 42.7% |
| APEX-Agents | 56.2% | — |
| τ²-bench Banking | 47.9% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| GDP.pdf | 14% | — |
| LMArena Search | 1213 | — |
Reasoning Grok 4.5 leads
Grok 4.5: 56.1 (#25), MiniMax-M2.5: 17.5 (#292)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| ARC-AGI-2 | 52.6% | 4.9% |
| Kagi LLM Benchmark | 83.5% | 55.2% |
| NYT Connections (extended) | 79.9% | 16.8% |
| ARC-AGI-1 | 87.2% | 63.7% |
| LMArena Hard Prompts | 1462 | 1372 |
| Epoch Capabilities Index | 153.92 | 146.68 |
| SimpleBench | 70% | — |
| CritPt | 15.4% | — |
| Chess Puzzles | 36% | — |
| DTBench | 96.5% | — |
| LMCA | 45.2% | — |
| Surface Evolver Bench | 74.4% | — |
Math Grok 4.5 leads
Grok 4.5: 60.9 (#35), MiniMax-M2.5: 26.9 (#253)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| ProofBench | 31% | 4% |
| LMArena Math | 1459 | 1378 |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| OTIS Mock AIME 2024-2025 | 97.8% | — |
Knowledge Grok 4.5 leads
Grok 4.5: 62.3 (#24), MiniMax-M2.5: 39.2 (#135)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Expert | 1466 | 1379 |
| GPQA Diamond | 93.4% | — |
| SimpleQA Verified | 48.3% | — |
| Vectara Hallucination Rate | — | 9.1% |
Multimodal Not comparable
Grok 4.5: 37.6 (#72), MiniMax-M2.5: —
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Vision | 1288 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |
Multilingual Grok 4.5 leads
Grok 4.5: 54.4 (#42), MiniMax-M2.5: 47.1 (#152)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Non-English | 1440 | 1338 |
| LMArena Chinese | 1496 | 1393 |
| LMArena French | 1456 | 1362 |
| LMArena German | 1446 | 1362 |
| LMArena Japanese | 1428 | 1171 |
| LMArena Korean | 1404 | 1232 |
| LMArena Russian | 1448 | 1358 |
| LMArena Spanish | 1450 | 1354 |
Instruction Following Grok 4.5 leads
Grok 4.5: 76.0 (#48), MiniMax-M2.5: 71.5 (#148)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Instruction Following | 1446 | 1353 |
Long Context Grok 4.5 leads
Grok 4.5: 44.8 (#56), MiniMax-M2.5: 37.5 (#216)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Longer Query | 1463 | 1366 |
| CL-bench | — | 11.4% |
| CL-bench Life | — | 6.3% |
Writing & Preference Grok 4.5 leads
Grok 4.5: 65.8 (#42), MiniMax-M2.5: 53.9 (#153)
| Benchmark | Grok 4.5 | MiniMax-M2.5 |
|---|---|---|
| LMArena Text | 1448 | 1359 |
| LMArena Creative Writing | 1442 | 1331 |
| EQ-Bench Creative Writing | 1579 | 1361 |
| LMArena Multi-Turn | 1456 | 1364 |
Frequently asked questions
Is Grok 4.5 better than MiniMax-M2.5?
Grok 4.5 is the stronger model overall, scoring 55.0 to 38.3 on the Noometry Index. MiniMax-M2.5 costs 5.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Which is cheaper, Grok 4.5 or MiniMax-M2.5?
MiniMax-M2.5 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Grok 4.5 lists at $2 and $6.
Is Grok 4.5 or MiniMax-M2.5 better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 48.1 in the Noometry coding category.
Which has the bigger context window?
Grok 4.5 does, with 500K tokens against 205K.
How many benchmarks do Grok 4.5 and MiniMax-M2.5 share?
27 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and MiniMax-M2.5 has 33.