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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. Claude Opus 5 vs TheDrummer: Rocinante 12B

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

Claude Opus 5 vs TheDrummer: Rocinante 12B benchmark

In this head-to-head showdown, TheDrummer: Rocinante 12B is more budget-friendly at $0.5/1M 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 Claude Opus 5 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose TheDrummer: Rocinante 12B if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Verified Head-to-Head Advantage Breakdown

3 direct benchmark disciplines evaluated across capability, speed, and cost

Claude Opus 5 (1)TheDrummer: Rocinante 12B (2)
Claude Opus 5
1 of 3 Wins
✓Context window
TheDrummer: Rocinante 12B
2 of 3 Wins
✓Input price✓Output price
Anthropic
Leads 1 of 3 metrics
Claude Opus 5

Anthropic current default flagship. Official API $5/$25 per 1M tokens and a 1M context window (Anthropic, Jul 24 2026).

Elo 1,624$50/1M out
thedrummer
Leads 2 of 3 metrics
TheDrummer: Rocinante 12B

Auto-discovered from OpenRouter (thedrummer/rocinante-12b). Preview until a second source matches.

$0.5/1M out

Claude Opus 5 Thinking Depth & Cost Scaler

Model A

Simulate accuracy gains vs added response time & token cost

Mode: Medium (16k budget)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Thinking Delay
310 ms
Standard speed
Reasoning Depth
~3,200
Internal tokens
Cost / 1k Calls
$180.00
9.0× standard bill
Accuracy Boost
+5.2% accuracy
STEM & SWE-bench
Top Rival Showdowns for Claude Opus 5
All Matchups
Compare vs:vs GPT-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 LeaderTheDrummer: Rocinante 12B Wins

TheDrummer: Rocinante 12B

$0.5 / 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 Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile
Head-to-Head Comparison

Overall Matchup Breakdown

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

Claude Opus 5 (8)vsTheDrummer: Rocinante 12B (2)
Claude Opus 5: 8W (80%)Overall: Claude Opus 5TheDrummer: Rocinante 12B: 2W (20%)
← Claude Opus 5TheDrummer: Rocinante 12B →
🏆Claude Opus 5(5/5)

Intelligence & Reasoning

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

Benchmark
Claude Opus 5vsTheDrummer: Rocinante 12B
Preference Elo
1,624vs—
Coding Elo
1,618vs—
SWE-bench
79.2%vs—
LiveBench
74.8%vs—
GPQA Diamond
87.1%vs—
Claude Opus 5: 5WTheDrummer: Rocinante 12B: 0W
🏆Claude Opus 5(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude Opus 5vsTheDrummer: Rocinante 12B
Output speed
72 tok/svs—
Time to first token
310 msvs—
Claude Opus 5: 2WTheDrummer: Rocinante 12B: 0W
🏆TheDrummer: Rocinante 12B(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude Opus 5vsTheDrummer: Rocinante 12B
Output price
$50/1Mvs$0.5/1M+$49.5/1M
Input price
$10/1Mvs$0.25/1M+$9.75/1M
Context window
1Mvs66k+934k
Claude Opus 5: 1WTheDrummer: Rocinante 12B: 2W

Side-by-Side Benchmark Matrix

Preference Elo
Claude Opus 51,624
lmarena · Aug 16, 2026
TheDrummer: Rocinante 12B—
Coding Elo
Claude Opus 51,618
lmarena · Aug 16, 2026
TheDrummer: Rocinante 12B—
LiveBench
Claude Opus 574.8%
livebench · Aug 16, 2026
TheDrummer: Rocinante 12B—
SWE-bench
Claude Opus 579.2%
swebench · Aug 16, 2026
TheDrummer: Rocinante 12B—
GPQA Diamond
Claude Opus 587.1%
seed-bootstrap · Aug 16, 2026
TheDrummer: Rocinante 12B—
Time to first token
Claude Opus 5310 ms
seed-bootstrap · Aug 16, 2026
TheDrummer: Rocinante 12B—
Output speed
Claude Opus 572 tok/s
seed-bootstrap · Aug 16, 2026
TheDrummer: Rocinante 12B—
Input price+$9.75/1M
Claude Opus 5$10/1M
openrouter · Aug 17, 2026
TheDrummer: Rocinante 12B$0.25/1M
openrouter · Aug 17, 2026
Output price+$49.5/1M
Claude Opus 5$50/1M
openrouter · Aug 17, 2026
TheDrummer: Rocinante 12B$0.5/1M
openrouter · Aug 17, 2026
Context window+934k
Claude Opus 51M
openrouter · Aug 17, 2026
TheDrummer: Rocinante 12B66k
openrouter · Aug 17, 2026
BenchmarkClaude Opus 5TheDrummer: Rocinante 12BAdvantage Delta
Preference Elo
1,624
lmarena · Aug 16, 2026
——
Coding Elo
1,618
lmarena · Aug 16, 2026
——
LiveBench
74.8%
livebench · Aug 16, 2026
——
SWE-bench
79.2%
swebench · Aug 16, 2026
——
GPQA Diamond
87.1%
seed-bootstrap · Aug 16, 2026
——
Time to first token
310 ms
seed-bootstrap · Aug 16, 2026
——
Output speed
72 tok/s
seed-bootstrap · Aug 16, 2026
——
Input price
$10/1M
openrouter · Aug 17, 2026
$0.25/1M
openrouter · Aug 17, 2026
+$9.75/1M
Output price
$50/1M
openrouter · Aug 17, 2026
$0.5/1M
openrouter · Aug 17, 2026
+$49.5/1M
Context window
1M
openrouter · Aug 17, 2026
66k
openrouter · Aug 17, 2026
+934k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 99% with TheDrummer: Rocinante 12B
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude Opus 5$1,100.00 / mo
In: $350Out: $750
TheDrummer: Rocinante 12B$16.25 / mo
In: $8.75Out: $7.5
Estimated Cost Delta

TheDrummer: Rocinante 12B is estimated to save $1,083.75/month ($13,005/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    TheDrummer: Rocinante 12B:Pick TheDrummer: Rocinante 12B when you are optimizing output cost.
  • 2
    Claude Opus 5:Pick Claude Opus 5 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatTheDrummer: Rocinante 12B

Lower output list price ($0.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGClaude Opus 5

Larger window (1M).

Screenshots / visionClaude Opus 5

Claude Opus 5 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatTheDrummer: Rocinante 12BLower output list price ($0.5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGClaude Opus 5Larger window (1M).
Screenshots / visionClaude Opus 5Claude Opus 5 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
compareAug 10, 2026

Sonnet vs Opus in 2026: same family, different invoice

Usually Sonnet 5 vs Opus 5. Coding delta versus output $/1M. The workhorse question.

compareJul 24, 2026

Claude vs Gemini: coding, Elo, and output price — not a brand mashup

Top Anthropic vs top Google. Usually Opus 5 vs 3.6 Pro. Two different invoices.

compareJul 24, 2026

Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

Not a frozen 2025 article. Today that is usually Opus 5 vs GPT-5.6 Sol. Dated cells, not a brand fight.

launchJul 24, 2026

Claude Opus 5 is Anthropic’s default flagship — how to read it on CompareLLM

Jul 24 2026 official API at $5/$25 and a 1M window. Preference Elo is taste, not a coding exam.

Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude Opus 5

Elo 1,624
SWE-bench79.2%
Speed (tok/s)72 tok/s
Input / 1M Tokens$10/1M
Output / 1M Tokens$50/1M
thedrummer

TheDrummer: Rocinante 12B

Elo n/a
SWE-bench—
Speed (tok/s)66k
Input / 1M Tokens$0.25/1M
Output / 1M Tokens$0.5/1M

Frequently Asked Questions

Which is better overall, Claude Opus 5 or TheDrummer: Rocinante 12B?
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, Claude Opus 5 or TheDrummer: Rocinante 12B?
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?
TheDrummer: Rocinante 12B output tokens are $0.5/1M versus $50/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude Opus 5 or TheDrummer: Rocinante 12B?
We do not have TTFT for both models.
Which has the larger context window?
Claude Opus 5 accepts 1M tokens versus 66k.
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. Claude Opus 5 and TheDrummer: Rocinante 12B Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • compare · Aug 10, 2026

    Sonnet vs Opus in 2026: same family, different invoice

  • compare · Jul 24, 2026

    Claude vs Gemini: coding, Elo, and output price — not a brand mashup

  • compare · Jul 24, 2026

    Claude vs GPT benchmark: this hub always remaps to the current Elo leaders

  • launch · Jul 24, 2026

    Claude Opus 5 is Anthropic’s default flagship — how to read it on CompareLLM

Similar Head-to-Head Comparisons

All Claude Opus 5 matchups →|All TheDrummer: Rocinante 12B matchups →
Claude Opus 5 vs Claude Opus 4.8 (previous opus)Claude Fable 5 vs Claude Opus 5Claude Opus 4.6 vs Claude Opus 5Claude Opus 4.5 vs Claude Opus 5Claude Sonnet 5 vs Claude Opus 5Claude Sonnet 4.5 vs Claude Opus 5