Model comparison
LFM2.5-8B-A1B vs o1-preview
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: LFM2.5-8B-A1B estimated; o1-preview supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. LFM2.5-8B-A1B and o1-preview share 1 comparable benchmark result. 0 of 8 categories are comparable. 17 results are unique to LFM2.5-8B-A1B; 1 to o1-preview.
Updated July 16, 2026- Shared results
- 1
- LFM2.5-8B-A1B only
- 17
- o1-preview only
- 1
- Comparable categories
- 0 / 8
Benchmark data for LFM2.5-8B-A1B and o1-preview is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
o1-preview is priced at $15.00 input / $60.00 output per 1M tokens, versus $0.00 input / $0.00 output per 1M tokens for LFM2.5-8B-A1B. o1-preview has the larger context window at 200K, compared with 128K for LFM2.5-8B-A1B.
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 | LFM2.5-8B-A1B | Δ | o1-preview |
|---|---|---|---|
| Math | LFM2.5-8B-A1B50.0 | MarginNo overlap | o1-previewNot measured |
| Inst. Following | LFM2.5-8B-A1B68.8 | MarginNo overlap | o1-previewNot measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | LFM2.5-8B-A1B | o1-preview | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | LFM2.5-8B-A1B$0 input / $0 output | o1-preview$15 input / $60 output | LFM2.5-8B-A1B has the lower combined listed price. |
| Generation speedtokens per second | LFM2.5-8B-A1BNot available | o1-previewNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | LFM2.5-8B-A1BNot available | o1-previewNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | LFM2.5-8B-A1B128K | o1-preview200K | o1-preview lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding3 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | LFM2.5-8B-A1B | o1-preview | Result |
|---|---|---|---|
| AA-GPQA DiamondSource | 51.3% | — | Not comparable |
| AA-HLESource | 6.9% | — | Not comparable |
| AA-Omniscience IndexSource | -33.3% | — | Not comparable |
| AA-Omniscience AccuracySource | 9.4% | — | Not comparable |
| AA-Omniscience Hallucination RateSource | 47.0% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 8.3% | 17.0% | o1-preview leads |
Math3 benchmarks
Frequently Asked Questions (3)
Can I compare LFM2.5-8B-A1B and o1-preview on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for LFM2.5-8B-A1B and o1-preview today?
LFM2.5-8B-A1B: $0.00 input / $0.00 output per 1M tokens o1-preview: $15.00 input / $60.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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