Model comparison
MiMo-V2-Flash vs o3-mini
Head-to-head evidence from 7 shared benchmark results across 3 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: MiMo-V2-Flash #96 (Supported); o3-mini #141 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. MiMo-V2-Flash and o3-mini share 7 comparable benchmark results. 2 of 8 categories are comparable. 12 results are unique to MiMo-V2-Flash; 3 to o3-mini.
Updated July 24, 2026- Shared results
- 7
- MiMo-V2-Flash only
- 12
- o3-mini only
- 3
- Comparable categories
- 2 / 8
Pick MiMo-V2-Flash if you want the stronger benchmark profile. o3-mini only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Confidence note. This is a partial-evidence comparison with 7 shared benchmark results across 3 evidence categories; 2 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-Flash is clearly ahead on the BenchAlign aggregate, 53.21 to 46.59. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiMo-V2-Flash's sharpest advantage is in coding, where it averages 73.4 against 49.3. The single biggest benchmark swing on the page is SWE-bench Verified, 73.4% to 49.3%.
o3-mini is also the more expensive model on tokens at $1.10 input / $4.40 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for MiMo-V2-Flash. That is roughly Infinityx on output cost alone. MiMo-V2-Flash gives you the larger context window at 256K, compared with 200K for o3-mini.
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 | MiMo-V2-Flash | Δ | o3-mini |
|---|---|---|---|
| Coding | MiMo-V2-Flash73.4 | Margin← 24.1 | o3-mini49.3 |
| Knowledge | MiMo-V2-Flash84.7 | Margin← 7.5 | o3-mini77.2 |
| Inst. Following | MiMo-V2-FlashNot measured | MarginNo overlap | o3-mini93.9 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
SWE-bench Verified
CodingA 73.4%B 49.3%Winner: MiMo-V2-FlashΔ 24.1SWE-bench Verified: MiMo-V2-Flash scored 73.4%; o3-mini scored 49.3%. MiMo-V2-Flash wins this benchmark. - Source ↗
GPQA
KnowledgeA 83.7%B 77.2%Winner: MiMo-V2-FlashΔ 6.5GPQA: MiMo-V2-Flash scored 83.7%; o3-mini scored 77.2%. MiMo-V2-Flash wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | MiMo-V2-Flash | o3-mini | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | MiMo-V2-Flash$0 input / $0 output | o3-mini$1.1 input / $4.4 output | MiMo-V2-Flash has the lower combined listed price. |
| Generation speedtokens per second | MiMo-V2-Flash129 tok/s | o3-mini160 tok/s | o3-mini has the higher measured throughput. |
| First-answer latencyseconds to first token | MiMo-V2-Flash2.14 s | o3-mini7.12 s | MiMo-V2-Flash reaches the first token sooner. |
| Context windowmaximum listed tokens | MiMo-V2-Flash256K | o3-mini200K | MiMo-V2-Flash lists the larger context window. |
Benchmark Deep Dive
Agentic4 benchmarks
CodingMiMo-V2-Flash wins3 benchmarks
Reasoning2 benchmarks
KnowledgeMiMo-V2-Flash wins9 benchmarks
| Benchmark | MiMo-V2-Flash | o3-mini | Result |
|---|---|---|---|
| GPQASource | 83.7% | 77.2% | MiMo-V2-Flash leads |
| MMLU-ProSource | 84.9% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 24.7% | 19.0% | MiMo-V2-Flash leads |
| AA-GPQA DiamondSource | 65.6% | 74.8% | o3-mini leads |
| AA-HLESource | 8.0% | 8.7% | o3-mini leads |
| AA-Omniscience IndexSource | -48.5% | — | Not comparable |
| AA-Omniscience AccuracySource | 15.2% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 75.1% | — | Not comparable |
| MMLUSource | — | 86.9% | Not comparable |
Math2 benchmarks
Frequently Asked Questions (3)
Which is better, MiMo-V2-Flash or o3-mini?
MiMo-V2-Flash is ahead on BenchLM's BenchAlign leaderboard, 53.21 to 46.59. The biggest single separator in this matchup is SWE-bench Verified, where the scores are 73.4% and 49.3%.
Which is better for knowledge tasks, MiMo-V2-Flash or o3-mini?
MiMo-V2-Flash has the edge for knowledge tasks in this comparison, averaging 84.7 versus 77.2. Inside this category, AA-GPQA Diamond is the benchmark that creates the most daylight between them.
Which is better for coding, MiMo-V2-Flash or o3-mini?
MiMo-V2-Flash has the edge for coding in this comparison, averaging 73.4 versus 49.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.