Model comparison
Grok Code Fast 1 vs MiMo-V2.5
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Grok Code Fast 1 #180 (Supported); MiMo-V2.5 #62 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok Code Fast 1 and MiMo-V2.5 share 0 comparable benchmark results. 1 of 8 categories are comparable. 12 results are unique to Grok Code Fast 1; 11 to MiMo-V2.5.
Updated July 21, 2026- Shared results
- 0
- Grok Code Fast 1 only
- 12
- MiMo-V2.5 only
- 11
- Comparable categories
- 1 / 8
Pick MiMo-V2.5 if you want the stronger benchmark profile. Grok Code Fast 1 only becomes the better choice if coding is the priority or you would rather avoid the extra latency and token burn of a reasoning model.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
MiMo-V2.5 is clearly ahead on the BenchAlign aggregate, 58.62 to 38.64. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiMo-V2.5 is the reasoning model in the pair, while Grok Code Fast 1 is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. MiMo-V2.5 gives you the larger context window at 1M, compared with 256K for Grok Code Fast 1.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Grok Code Fast 1 | MiMo-V2.5 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok Code Fast 1$0.2 input / $1.5 output | MiMo-V2.5Not available | A complete price comparison is not available. |
| Generation speedtokens per second | Grok Code Fast 1172 tok/s | MiMo-V2.5Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok Code Fast 12.81 s | MiMo-V2.5Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok Code Fast 1256K | MiMo-V2.51M | MiMo-V2.5 lists the larger context window. |
Benchmark Deep Dive
Agentic6 benchmarks
CodingGrok Code Fast 1 wins4 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5 | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.6% | — | Not comparable |
| AA-GPQA DiamondSource | 72.7% | — | Not comparable |
| AA-HLESource | 7.5% | — | Not comparable |
| AA-Omniscience IndexSource | -36.0% | — | Not comparable |
| AA-Omniscience AccuracySource | 23.8% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 78.5% | — | Not comparable |
Multimodal4 benchmarks
Inst. Following1 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5 | Result |
|---|---|---|---|
| AA-IFBenchSource | 41.4% | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Grok Code Fast 1 or MiMo-V2.5?
MiMo-V2.5 is ahead on BenchLM's BenchAlign leaderboard, 58.62 to 38.64.
Which is better for coding, Grok Code Fast 1 or MiMo-V2.5?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 56.1. MiMo-V2.5 stays close enough that the answer can still flip depending on your workload.
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