Model comparison
Grok Code Fast 1 vs MiMo-V2.5-Pro
Head-to-head evidence from 11 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Grok Code Fast 1 #180 (Supported); MiMo-V2.5-Pro #14 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Grok Code Fast 1 and MiMo-V2.5-Pro share 11 comparable benchmark results. 1 of 8 categories are comparable. 1 result is unique to Grok Code Fast 1; 20 to MiMo-V2.5-Pro.
Updated July 21, 2026- Shared results
- 11
- Grok Code Fast 1 only
- 1
- MiMo-V2.5-Pro only
- 20
- Comparable categories
- 1 / 8
Pick MiMo-V2.5-Pro 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 11 shared benchmark results across 5 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-Pro is clearly ahead on the BenchAlign aggregate, 70.19 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-Pro 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-Pro gives you the larger context window at 1M, compared with 256K for Grok Code Fast 1.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Grok Code Fast 1 | Δ | MiMo-V2.5-Pro |
|---|---|---|---|
| Coding | Grok Code Fast 170.8 | Margin← 13.6 | MiMo-V2.5-Pro57.2 |
| Agentic | Grok Code Fast 1Not measured | MarginNo overlap | MiMo-V2.5-Pro68.4 |
| Knowledge | Grok Code Fast 1Not measured | MarginNo overlap | MiMo-V2.5-Pro48.0 |
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-Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Grok Code Fast 1$0.2 input / $1.5 output | MiMo-V2.5-ProNot available | A complete price comparison is not available. |
| Generation speedtokens per second | Grok Code Fast 1172 tok/s | MiMo-V2.5-ProNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Grok Code Fast 12.81 s | MiMo-V2.5-ProNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Grok Code Fast 1256K | MiMo-V2.5-Pro1M | MiMo-V2.5-Pro lists the larger context window. |
Benchmark Deep Dive
Agentic14 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5-Pro | Result |
|---|---|---|---|
| τ²-bench resultsSource | 75.7% | 94.2% | MiMo-V2.5-Pro leads |
| Claw-EvalSource | — | 63.8% | Not comparable |
| GDPval-AASource | — | 1265 | Not comparable |
| τ³-bench resultsSource | — | 72.9% | Not comparable |
| Terminal-Bench 2.0Source | — | 68.4% | Not comparable |
| AA Agentic IndexSource | — | 29.1% | Not comparable |
| GDPval-AASource | — | 38.3% | Not comparable |
| APEX-Agents-AASource | — | 2.4% | Not comparable |
| Gert LabsSource | — | 62.70% | Not comparable |
| AA BriefcaseSource | — | 873 | Not comparable |
| AA ITBenchSource | — | 38.2% | Not comparable |
| terminalBenchHardSource | — | 43.2% | Not comparable |
| aaTerminalBench21Source | — | 65.2% | Not comparable |
| AA Harvey LABSource | — | 73.3% | Not comparable |
CodingGrok Code Fast 1 wins5 benchmarks
Reasoning2 benchmarks
Knowledge9 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5-Pro | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 21.6% | 42.2% | MiMo-V2.5-Pro leads |
| AA-GPQA DiamondSource | 72.7% | 86.6% | MiMo-V2.5-Pro leads |
| AA-HLESource | 7.5% | 33.8% | MiMo-V2.5-Pro leads |
| AA-Omniscience IndexSource | -36.0% | 3.6% | MiMo-V2.5-Pro leads |
| AA-Omniscience AccuracySource | 23.8% | 22.6% | Grok Code Fast 1 leads |
| AA-Omniscience Hallucination RateSource | 78.5% | 24.5% | MiMo-V2.5-Pro leads |
| HLESource | — | 48% | Not comparable |
| HLE w/o toolsSource | — | 34% | Not comparable |
| AA Openness IndexSource | — | 38.9% | Not comparable |
Multimodal1 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5-Pro | Result |
|---|---|---|---|
| Design Arena WebsiteSource | — | 1298 | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Grok Code Fast 1 | MiMo-V2.5-Pro | Result |
|---|---|---|---|
| AA-IFBenchSource | 41.4% | 79.9% | MiMo-V2.5-Pro leads |
Frequently Asked Questions (2)
Which is better, Grok Code Fast 1 or MiMo-V2.5-Pro?
MiMo-V2.5-Pro is ahead on BenchLM's BenchAlign leaderboard, 70.19 to 38.64.
Which is better for coding, Grok Code Fast 1 or MiMo-V2.5-Pro?
Grok Code Fast 1 has the edge for coding in this comparison, averaging 70.8 versus 57.2. Inside this category, AA-SciCode is the benchmark that creates the most daylight between them.
Related Comparisons
Explore More
Choose a model with this week’s evidence
Join 2,000+ readers for ranking moves, pricing changes, and the claims that still need proof.
One email each week. Unsubscribe anytime.