Compare/LFM2 2.6B vs o3

LFM2 2.6Bvso3

Side-by-side comparison of pricing, 12 benchmarks, and generation speed.

Liquid AI

LFM2 2.6B

Input
$0/M
Output
$0/M
Speed
TTFT
OpenAI

o3

Input
$2/M
Output
$8/M
Speed
125 tok/s
TTFT
6.65s

Winner by Category

Cheaper
LFM2 2.6B
Faster (tok/s)
o3
Lower Latency
LFM2 2.6B
Benchmarks (0-11)
o3

Pricing Comparison

MetricLFM2 2.6Bo3
Input ($/M tokens)$0$2
Output ($/M tokens)$0$8
Cost for 1M input + 100K output tokens:
LFM2 2.6B$0.00
o3$2.80

Speed Comparison

Output Speed (tokens/s) — higher is better
LFM2 2.6B
o3
125 tok/s
Time to First Token (seconds) — lower is better
LFM2 2.6B
o3
6.65s

Benchmark Comparison

Data from Artificial Analysis API — 12 benchmarks

Intelligence Index
2.730.4
Coding Index
Math Index
8.388.3
GPQA Diamond
30.6%82.7%
MMLU-Pro
29.8%85.3%
LiveCodeBench
8.1%80.8%
AIME 2025
8.3%88.3%
MATH-500
99.2%
Humanity's Last Exam
5.2%20.0%
SciCode
2.5%41.0%
IFBench
19.5%71.4%
TerminalBench
0.8%37.1%
LFM2 2.6B0 wins
11 winso3

Frequently Asked Questions

Which is cheaper, LFM2 2.6B or o3?

LFM2 2.6B is cheaper overall. Its blended price (3:1 input/output ratio) is $0.00/M tokens vs $3.50/M for o3.

Which model performs better on benchmarks?

o3 wins 11 out of 12 benchmarks compared to 0 for LFM2 2.6B. See the detailed benchmark chart above for per-category results.

Which is faster for real-time applications?

o3 generates tokens faster at 125 tok/s vs 0 tok/s. LFM2 2.6B also has lower time-to-first-token (0.00s vs 6.65s).

When should I use LFM2 2.6B vs o3?

Choose based on your priorities: LFM2 2.6B for lower cost, o3 for stronger benchmark performance, and o3 for faster generation. For latency-sensitive apps, check the TTFT comparison above.