Model comparison
Kimi K2 vs LFM2.5-8B-A1B
Head-to-head evidence from 12 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: Kimi K2 supported; LFM2.5-8B-A1B estimated. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Kimi K2 and LFM2.5-8B-A1B share 12 comparable benchmark results. 1 of 8 categories are comparable. 3 results are unique to Kimi K2; 6 to LFM2.5-8B-A1B.
Updated July 16, 2026- Shared results
- 12
- Kimi K2 only
- 3
- LFM2.5-8B-A1B only
- 6
- Comparable categories
- 1 / 8
Pick Kimi K2 if you want the stronger benchmark profile. LFM2.5-8B-A1B only becomes the better choice if mathematics is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 12 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
Kimi K2 is clearly ahead on the provisional aggregate, 43 to 37. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Kimi K2 is also the more expensive model on tokens at $0.60 input / $2.50 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for LFM2.5-8B-A1B. That is roughly Infinityx on output cost alone. LFM2.5-8B-A1B is the reasoning model in the pair, while Kimi K2 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.
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 | Kimi K2 | Δ | LFM2.5-8B-A1B |
|---|---|---|---|
| Math | Kimi K216.1 | Margin→ 33.9 | LFM2.5-8B-A1B50.0 |
| Inst. Following | Kimi K2Not measured | MarginNo overlap | LFM2.5-8B-A1B68.8 |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Kimi K2 | LFM2.5-8B-A1B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Kimi K2$0.6 input / $2.5 output | LFM2.5-8B-A1B$0 input / $0 output | LFM2.5-8B-A1B has the lower combined listed price. |
| Generation speedtokens per second | Kimi K243 tok/s | LFM2.5-8B-A1BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Kimi K21.51 s | LFM2.5-8B-A1BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Kimi K2128K | LFM2.5-8B-A1B128K | Listed context windows are equal. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | Kimi K2 | LFM2.5-8B-A1B | Result |
|---|---|---|---|
| Artificial Analysis Intelligence IndexSource | 19.4% | 8.3% | Kimi K2 leads |
| AA-GPQA DiamondSource | 76.6% | 51.3% | Kimi K2 leads |
| AA-HLESource | 7.0% | 6.9% | Kimi K2 leads |
| AA-Omniscience IndexSource | -27.5% | -33.3% | Kimi K2 leads |
| AA-Omniscience AccuracySource | 26.8% | 9.4% | Kimi K2 leads |
| AA-Omniscience Hallucination RateSource | 74.2% | 47.0% | LFM2.5-8B-A1B leads |
MathLFM2.5-8B-A1B wins5 benchmarks
Multimodal1 benchmarks
| Benchmark | Kimi K2 | LFM2.5-8B-A1B | Result |
|---|---|---|---|
| Design Arena WebsiteSource | 1085 | — | Not comparable |
Frequently Asked Questions (2)
Which is better, Kimi K2 or LFM2.5-8B-A1B?
Kimi K2 is ahead on BenchLM's provisional leaderboard, 43 to 37.
Which is better for math, Kimi K2 or LFM2.5-8B-A1B?
LFM2.5-8B-A1B has the edge for math in this comparison, averaging 50 versus 16.1. Kimi K2 stays close enough that the answer can still flip depending on your workload.
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