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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. GPT-4.5 Orion vs LiquidAI: LFM2.5-2.6B (free)
Independent ReportPairwise benchmark snapshot · Aug 17, 2026
noindex (thin pair)
GPT-4.5 Orion(OpenAI)
vs
LiquidAI: LFM2.5-2.6B (free)(liquid)

GPT-4.5 Orion vs LiquidAI: LFM2.5-2.6B (free) benchmark

In this head-to-head showdown, LiquidAI: LFM2.5-2.6B (free) is more budget-friendly at $0/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose GPT-4.5 Orion if your priority is peak reasoning, complex code generation, and top preference Elo. Choose LiquidAI: LFM2.5-2.6B (free) if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

LiquidAI: LFM2.5-2.6B (free) holds empirical advantage (2 of 2 metrics)

Coding / SWESWE-bench
GPT-4.5 OrionTop code solve rate
ReasoningGPQA / Live
GPT-4.5 OrionTop logical accuracy
Best Value$/1M Tok
GPT-4.5 OrionLowest API billing cost
Speed / TokTok/Sec
GPT-4.5 OrionFastest stream rate

Verified Advantage Breakdown

2 benchmarks evaluated across capability, speed, and cost

GPT-4.5 Orion (0)LiquidAI: LFM2.5-2.6B (free) (2)
GPT-4.5 Orion
0 of 2 Wins
Competitive baseline across remaining benchmarks
LiquidAI: LFM2.5-2.6B (free)
2 of 2 Wins
✓Input price✓Output price
OpenAI
GPT-4.5 Orion

OpenAI largest dense non-reasoning model with expansive world knowledge and reduced hallucinations.

Elo 1,540In: $75 · Out: $150/1M
liquid
Leads 2 of 2
LiquidAI: LFM2.5-2.6B (free)

Auto-discovered from OpenRouter (liquid/lfm-2.5-2.6b:free). Preview until a second source matches.

In: $0 · Out: $0/1M
Top Rival Showdowns for GPT-4.5 Orion
All Matchups
Compare vs:vs Claude Opus 4.5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderLiquidAI: LFM2.5-2.6B (free) Wins

LiquidAI: LFM2.5-2.6B (free)

$0 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

GPT-4.5 Orion (7)vsLiquidAI: LFM2.5-2.6B (free) (2)
GPT-4.5 Orion: 7W (78%)Overall: GPT-4.5 OrionLiquidAI: LFM2.5-2.6B (free): 2W (22%)
← GPT-4.5 Orion1 tiesLiquidAI: LFM2.5-2.6B (free) →
🏆GPT-4.5 Orion Leads(5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
GPT-4.5 OrionvsLiquidAI: LFM2.5-2.6B (free)
Preference Elo
1,540vs—
Coding Elo
1,520vs—
SWE-bench
71%vs—
LiveBench
68.5%vs—
GPQA Diamond
84%vs—
GPT-4.5 Orion: 5WLiquidAI: LFM2.5-2.6B (free): 0W
🏆GPT-4.5 Orion Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
GPT-4.5 OrionvsLiquidAI: LFM2.5-2.6B (free)
Output speed
60 tok/svs—
Time to first token
350 msvs—
GPT-4.5 Orion: 2WLiquidAI: LFM2.5-2.6B (free): 0W
🏆LiquidAI: LFM2.5-2.6B (free) Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
GPT-4.5 OrionvsLiquidAI: LFM2.5-2.6B (free)
Output price
$150/1Mvs$0/1M+$150/1M
Input price
$75/1Mvs$0/1M+$75/1M
Context window
128kvs128k
GPT-4.5 Orion: 0WLiquidAI: LFM2.5-2.6B (free): 2W

Side-by-Side Benchmark Matrix

GPT-4.5 OrionLiquidAI: LFM2.5-2.6B (free)
Preference Elo(Higher is better)
GPT-4.5 Orion1,540
LiquidAI: LFM2.5-2.6B (free)—
Coding Elo(Higher is better)
GPT-4.5 Orion1,520
LiquidAI: LFM2.5-2.6B (free)—
LiveBench(Higher is better)
GPT-4.5 Orion68.5%
LiquidAI: LFM2.5-2.6B (free)—
SWE-bench(Higher is better)
GPT-4.5 Orion71%
LiquidAI: LFM2.5-2.6B (free)—
GPQA Diamond(Higher is better)
GPT-4.5 Orion84%
LiquidAI: LFM2.5-2.6B (free)—
Time to first token(Lower is better)
GPT-4.5 Orion350 ms
LiquidAI: LFM2.5-2.6B (free)—
Output speed(Higher is better)
GPT-4.5 Orion60 tok/s
LiquidAI: LFM2.5-2.6B (free)—
Input price(Lower is better)
LiquidAI: LFM2.5-2.6B (free) +$75/1M
GPT-4.5 Orion$75/1M
LiquidAI: LFM2.5-2.6B (free)$0/1M
Output price(Lower is better)
LiquidAI: LFM2.5-2.6B (free) +$150/1M
GPT-4.5 Orion$150/1M
LiquidAI: LFM2.5-2.6B (free)$0/1M
Context window(Higher is better)
GPT-4.5 Orion128k
LiquidAI: LFM2.5-2.6B (free)128k
BenchmarkGPT-4.5 OrionLiquidAI: LFM2.5-2.6B (free)Difference / Delta
Preference Elo
1,540
lmarena · Aug 17, 2026
——
Coding Elo
1,520
lmarena · Aug 17, 2026
——
LiveBench
68.5%
livebench · Aug 17, 2026
——
SWE-bench
71%
swebench · Aug 17, 2026
——
GPQA Diamond
84%
seed-bootstrap · Aug 1, 2026
——
Time to first token
350 ms
seed-bootstrap · Aug 1, 2026
——
Output speed
60 tok/s
seed-bootstrap · Aug 1, 2026
——
Input price
$75/1M
seed-bootstrap · Aug 1, 2026
$0/1M
openrouter · Aug 17, 2026
LiquidAI: LFM2.5-2.6B (free)+$75/1M
Output price
$150/1M
seed-bootstrap · Aug 1, 2026
$0/1M
openrouter · Aug 17, 2026
LiquidAI: LFM2.5-2.6B (free)+$150/1M
Context window
128k
seed-bootstrap · Aug 1, 2026
128k
openrouter · Aug 17, 2026
= Same

Key Selection Recommendations

  • 1
    LiquidAI: LFM2.5-2.6B (free):Pick LiquidAI: LFM2.5-2.6B (free) when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatLiquidAI: LFM2.5-2.6B (free)

Lower output list price ($0/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGGPT-4.5 Orion

Larger window (128k).

Screenshots / visionGPT-4.5 Orion

GPT-4.5 Orion is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatLiquidAI: LFM2.5-2.6B (free)Lower output list price ($0/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGGPT-4.5 OrionLarger window (128k).
Screenshots / visionGPT-4.5 OrionGPT-4.5 Orion is the side marked multimodal in the catalog.

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
OpenAI

GPT-4.5 Orion

Elo 1,540
SWE-bench71%
Speed (tok/s)60 tok/s
Input / 1M Tokens$75/1M
Output / 1M Tokens$150/1M
liquid

LiquidAI: LFM2.5-2.6B (free)

Elo n/a
SWE-bench—
Speed (tok/s)128k
Input / 1M Tokens$0/1M
Output / 1M Tokens$0/1M

Frequently Asked Questions

Which is better overall, GPT-4.5 Orion or LiquidAI: LFM2.5-2.6B (free)?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, GPT-4.5 Orion or LiquidAI: LFM2.5-2.6B (free)?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
LiquidAI: LFM2.5-2.6B (free) output tokens are $0/1M versus $150/1M. Input prices and retry rates still move the real bill.
Which is faster, GPT-4.5 Orion or LiquidAI: LFM2.5-2.6B (free)?
We do not have TTFT for both models.
Which has the larger context window?
GPT-4.5 Orion accepts 128k tokens versus 128k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. GPT-4.5 Orion and LiquidAI: LFM2.5-2.6B (free) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All GPT-4.5 Orion matchups →|All LiquidAI: LFM2.5-2.6B (free) matchups →
GPT-4.5 Orion vs OpenAI: o1 (previous gpt-flagship)GPT-4.5 Orion vs GPT-5 (next gpt-flagship)GPT-5.6 Terra vs GPT-4.5 OrionGPT-5.6 Sol vs GPT-4.5 OrionOpenAI: o3 Mini vs GPT-4.5 OrionGPT-5.6 Luna vs GPT-4.5 Orion