Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Llama 3.1 405B vs Mancer: Weaver (alpha) benchmark

Name: Llama 3.1 405B vs Mancer: Weaver (alpha) AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

In this head-to-head showdown, Mancer: Weaver (alpha) is more budget-friendly at $0.75/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

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Executive Verdict Summary

Mancer: Weaver (alpha) holds empirical advantage (2 of 3 metrics)

Coding / SWESWE-bench

Llama 3.1 405BTop code solve rate

ReasoningGPQA / Live

Llama 3.1 405BTop logical accuracy

Best Value$/1M Tok

Mancer: Weaver (alpha)Lowest API billing cost

Speed / TokTok/Sec

Llama 3.1 405BFastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Llama 3.1 405B (1)Mancer: Weaver (alpha) (2)

Llama 3.1 405B

1 of 3 Wins

✓Context window

Mancer: Weaver (alpha)

2 of 3 Wins

✓Input price✓Output price

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderMancer: Weaver (alpha) Wins

Mancer: Weaver (alpha)

$0.75 / 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.

Llama 3.1 405B (8)vsMancer: Weaver (alpha) (2)

Llama 3.1 405B: 8W (80%)Mancer: Weaver (alpha): 2W (20%)

← Llama 3.1 405BMancer: Weaver (alpha) →

🏆Llama 3.1 405B Leads(5/5)

Intelligence & Reasoning

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

Benchmark

Llama 3.1 405BvsMancer: Weaver (alpha)

Preference Elo

1,370vs—

Coding Elo

1,385vs—

SWE-bench

58.4%vs—

LiveBench

61.2%vs—

GPQA Diamond

75.2%vs—

Llama 3.1 405B: 5WMancer: Weaver (alpha): 0W

🏆Llama 3.1 405B Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark

Llama 3.1 405BvsMancer: Weaver (alpha)

Output speed

42 tok/svs—

Time to first token

360 msvs—

Llama 3.1 405B: 2WMancer: Weaver (alpha): 0W

🏆Mancer: Weaver (alpha) Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark

Llama 3.1 405BvsMancer: Weaver (alpha)

Output price

$3.5/1Mvs$0.75/1M+$2.75/1M

Input price

$1.25/1Mvs$0.5/1M+$0.75/1M

Context window

128kvs8k+120k

Llama 3.1 405B: 1WMancer: Weaver (alpha): 2W

Side-by-Side Benchmark Matrix

Llama 3.1 405BMancer: Weaver (alpha)

Preference Elo

Llama 3.1 405B1,370

Mancer: Weaver (alpha)—

Coding Elo

Llama 3.1 405B1,385

Mancer: Weaver (alpha)—

LiveBench

Llama 3.1 405B61.2%

Mancer: Weaver (alpha)—

SWE-bench

Llama 3.1 405B58.4%

Mancer: Weaver (alpha)—

GPQA Diamond

Llama 3.1 405B75.2%

Mancer: Weaver (alpha)—

Time to first token

Llama 3.1 405B360 ms

Mancer: Weaver (alpha)—

Output speed

Llama 3.1 405B42 tok/s

Mancer: Weaver (alpha)—

Input priceMancer: Weaver (alpha) +$0.75/1M

Llama 3.1 405B$1.25/1M

Mancer: Weaver (alpha)$0.5/1M

Output priceMancer: Weaver (alpha) +$2.75/1M

Llama 3.1 405B$3.5/1M

Mancer: Weaver (alpha)$0.75/1M

Context windowLlama 3.1 405B +120k

Llama 3.1 405B128k

Mancer: Weaver (alpha)8k

Benchmark	Llama 3.1 405B	Mancer: Weaver (alpha)	Advantage Delta
Preference Elo	1,370 lmarena · Aug 17, 2026	—	—
Coding Elo	1,385 lmarena · Aug 17, 2026	—	—
LiveBench	61.2% livebench · Aug 17, 2026	—	—
SWE-bench	58.4% swebench · Aug 17, 2026	—	—
GPQA Diamond	75.2% seed-bootstrap · Aug 1, 2026	—	—
Time to first token	360 ms seed-bootstrap · Aug 1, 2026	—	—
Output speed	42 tok/s seed-bootstrap · Aug 1, 2026	—	—
Input price	$1.25/1M seed-bootstrap · Aug 1, 2026	$0.5/1M openrouter · Aug 17, 2026	+$0.75/1M
Output price	$3.5/1M seed-bootstrap · Aug 1, 2026	$0.75/1M openrouter · Aug 17, 2026	+$2.75/1M
Context window	128k seed-bootstrap · Aug 1, 2026	8k openrouter · Aug 17, 2026	+120k

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save 70% with Mancer: Weaver (alpha)

Monthly Volume50M tokens/mo

Quick Presets:

Token Ratio (In vs Out)70% In / 30% Out

RAG / Search (10% out)Coding / Chat (50% out)

Llama 3.1 405B$96.25 / mo

In: $43.75Out: $52.5

Mancer: Weaver (alpha)$28.75 / mo

In: $17.5Out: $11.25

Estimated Cost Delta

Mancer: Weaver (alpha) is estimated to save $67.50/month ($810/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

1
Mancer: Weaver (alpha):Pick Mancer: Weaver (alpha) when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatMancer: Weaver (alpha)

Lower output list price ($0.75/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGLlama 3.1 405B

Larger window (128k).

Screenshots / visionMancer: Weaver (alpha)

Mancer: Weaver (alpha) is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Mancer: Weaver (alpha)	Lower output list price ($0.75/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	Llama 3.1 405B	Larger window (128k).
Screenshots / vision	Mancer: Weaver (alpha)	Mancer: Weaver (alpha) is the side marked multimodal in the catalog.

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK

Llama 3.1 405B

Elo 1,370

SWE-bench58.4%

Speed (tok/s)42 tok/s

Input / 1M Tokens$1.25/1M

Output / 1M Tokens$3.5/1M

mancer

Mancer: Weaver (alpha)

Elo n/a

SWE-bench—

Speed (tok/s)8k

Input / 1M Tokens$0.5/1M

Output / 1M Tokens$0.75/1M

Frequently Asked Questions

Which is better overall, Llama 3.1 405B or Mancer: Weaver (alpha)?: 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, Llama 3.1 405B or Mancer: Weaver (alpha)?: 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?: Mancer: Weaver (alpha) output tokens are $0.75/1M versus $3.5/1M. Input prices and retry rates still move the real bill.
Which is faster, Llama 3.1 405B or Mancer: Weaver (alpha)?: We do not have TTFT for both models.
Which has the larger context window?: Llama 3.1 405B accepts 128k tokens versus 8k.
Can I self-host either model?: Llama 3.1 405B is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
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. Llama 3.1 405B and Mancer: Weaver (alpha) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Llama 3.1 405B matchups →|All Mancer: Weaver (alpha) matchups →

Llama 3.1 405B vs Llama 3.1 70B (next llama)Llama 4 Maverick vs Llama 3.1 405B Llama 4 Scout vs Llama 3.1 405B Llama 3.3 70B vs Llama 3.1 405B Mistral Large 3 vs Llama 3.1 405B Doubao Pro 1.5 vs Llama 3.1 405B

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

Side-by-Side Benchmark Matrix

Llama 3.1 405BMancer: Weaver (alpha)

Preference Elo

Llama 3.1 405B1,370

Mancer: Weaver (alpha)—

Coding Elo

Llama 3.1 405B1,385

Mancer: Weaver (alpha)—

LiveBench

Llama 3.1 405B61.2%

Mancer: Weaver (alpha)—

SWE-bench

Llama 3.1 405B58.4%

Mancer: Weaver (alpha)—

GPQA Diamond

Llama 3.1 405B75.2%

Mancer: Weaver (alpha)—

Time to first token

Llama 3.1 405B360 ms

Mancer: Weaver (alpha)—

Output speed

Llama 3.1 405B42 tok/s

Mancer: Weaver (alpha)—

Input priceMancer: Weaver (alpha) +$0.75/1M

Llama 3.1 405B$1.25/1M

Mancer: Weaver (alpha)$0.5/1M

Output priceMancer: Weaver (alpha) +$2.75/1M

Llama 3.1 405B$3.5/1M

Mancer: Weaver (alpha)$0.75/1M

Context windowLlama 3.1 405B +120k

Llama 3.1 405B128k

Mancer: Weaver (alpha)8k

Benchmark

Llama 3.1 405B

Mancer: Weaver (alpha)

Advantage Delta

Preference Elo

1,370

lmarena · Aug 17, 2026

—

Coding Elo

1,385

lmarena · Aug 17, 2026

—

LiveBench

61.2%

livebench · Aug 17, 2026

—

SWE-bench

58.4%

swebench · Aug 17, 2026

—

GPQA Diamond

75.2%

seed-bootstrap · Aug 1, 2026

—

Time to first token

360 ms

seed-bootstrap · Aug 1, 2026

—

Output speed

42 tok/s

seed-bootstrap · Aug 1, 2026

—

Input price

$1.25/1M

seed-bootstrap · Aug 1, 2026

$0.5/1M

openrouter · Aug 17, 2026

+$0.75/1M

Output price

$3.5/1M

seed-bootstrap · Aug 1, 2026

$0.75/1M

openrouter · Aug 17, 2026

+$2.75/1M

Context window

128k

seed-bootstrap · Aug 1, 2026

openrouter · Aug 17, 2026

+120k

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatMancer: Weaver (alpha)

Lower output list price ($0.75/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGLlama 3.1 405B

Larger window (128k).

Screenshots / visionMancer: Weaver (alpha)

Mancer: Weaver (alpha) is the side marked multimodal in the catalog.

Target Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	Mancer: Weaver (alpha)	Lower output list price ($0.75/1M).
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	Llama 3.1 405B	Larger window (128k).
Screenshots / vision	Mancer: Weaver (alpha)	Mancer: Weaver (alpha) is the side marked multimodal in the catalog.

Frequently Asked Questions

Which is better overall, Llama 3.1 405B or Mancer: Weaver (alpha)?

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, Llama 3.1 405B or Mancer: Weaver (alpha)?

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?

Mancer: Weaver (alpha) output tokens are $0.75/1M versus $3.5/1M. Input prices and retry rates still move the real bill.

Which is faster, Llama 3.1 405B or Mancer: Weaver (alpha)?

We do not have TTFT for both models.

Which has the larger context window?

Llama 3.1 405B accepts 128k tokens versus 8k.

Can I self-host either model?

Llama 3.1 405B is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.

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. Llama 3.1 405B and Mancer: Weaver (alpha) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.