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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 3.5 Sonnet vs Claude Opus 5 (batch)

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

Claude 3.5 Sonnet vs Claude Opus 5 (batch) benchmark

In this head-to-head showdown, Claude Opus 5 (batch) is more budget-friendly at $12.5/1M 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 3.5 Sonnet if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Claude Opus 5 (batch) if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

Claude Opus 5 (batch) holds empirical advantage (3 of 3 metrics)

Coding / SWESWE-bench
Claude 3.5 SonnetTop code solve rate
ReasoningGPQA / Live
Claude 3.5 SonnetTop logical accuracy
Best Value$/1M Tok
Claude Opus 5 (batch)Lowest API billing cost
Speed / TokTok/Sec
Claude 3.5 SonnetFastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Claude 3.5 Sonnet (0)Claude Opus 5 (batch) (3)
Claude 3.5 Sonnet
0 of 3 Wins
Competitive baseline across remaining benchmarks
Claude Opus 5 (batch)
3 of 3 Wins
✓Input price✓Output price✓Context window
Anthropic
Claude 3.5 Sonnet

2024 workhorse. Still a high-intent compare against GPT-4o.

Elo 1,280In: $3 · Out: $15/1M
Anthropic
Leads 3 of 3
Claude Opus 5 (batch)

Auto-discovered from OpenRouter (anthropic/claude-opus-5:batch). Preview until a second source matches.

In: $2.5 · Out: $12.5/1M
Top Rival Showdowns for Claude 3.5 Sonnet
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 LeaderClaude Opus 5 (batch) Wins

Claude Opus 5 (batch)

$12.5 / 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 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.

Claude 3.5 Sonnet (6)vsClaude Opus 5 (batch) (3)
Claude 3.5 Sonnet: 6W (67%)Overall: Claude 3.5 SonnetClaude Opus 5 (batch): 3W (33%)
← Claude 3.5 SonnetClaude Opus 5 (batch) →
🏆Claude 3.5 Sonnet Leads(4/5)

Intelligence & Reasoning

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

Benchmark
Claude 3.5 SonnetvsClaude Opus 5 (batch)
Preference Elo
1,280vs—
Coding Elo
—vs—
SWE-bench
49%vs—
LiveBench
52.1%vs—
GPQA Diamond
65%vs—
Claude 3.5 Sonnet: 4WClaude Opus 5 (batch): 0W
🏆Claude 3.5 Sonnet Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3.5 SonnetvsClaude Opus 5 (batch)
Output speed
80 tok/svs—
Time to first token
280 msvs—
Claude 3.5 Sonnet: 2WClaude Opus 5 (batch): 0W
🏆Claude Opus 5 (batch) Leads(3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3.5 SonnetvsClaude Opus 5 (batch)
Output price
$15/1Mvs$12.5/1M+$2.5/1M
Input price
$3/1Mvs$2.5/1M+$0.5/1M
Context window
200kvs1M+800k
Claude 3.5 Sonnet: 0WClaude Opus 5 (batch): 3W

Side-by-Side Benchmark Matrix

Claude 3.5 SonnetClaude Opus 5 (batch)
Preference Elo
Claude 3.5 Sonnet1,280
Claude Opus 5 (batch)—
LiveBench
Claude 3.5 Sonnet52.1%
Claude Opus 5 (batch)—
SWE-bench
Claude 3.5 Sonnet49%
Claude Opus 5 (batch)—
GPQA Diamond
Claude 3.5 Sonnet65%
Claude Opus 5 (batch)—
Time to first token
Claude 3.5 Sonnet280 ms
Claude Opus 5 (batch)—
Output speed
Claude 3.5 Sonnet80 tok/s
Claude Opus 5 (batch)—
Input priceClaude Opus 5 (batch) +$0.5/1M
Claude 3.5 Sonnet$3/1M
Claude Opus 5 (batch)$2.5/1M
Output priceClaude Opus 5 (batch) +$2.5/1M
Claude 3.5 Sonnet$15/1M
Claude Opus 5 (batch)$12.5/1M
Context windowClaude Opus 5 (batch) +800k
Claude 3.5 Sonnet200k
Claude Opus 5 (batch)1M
BenchmarkClaude 3.5 SonnetClaude Opus 5 (batch)Advantage Delta
Preference Elo
1,280
lmarena · Aug 17, 2026
——
LiveBench
52.1%
livebench · Aug 17, 2026
——
SWE-bench
49%
swebench · Aug 17, 2026
——
GPQA Diamond
65%
seed-bootstrap · Aug 1, 2026
——
Time to first token
280 ms
seed-bootstrap · Aug 1, 2026
——
Output speed
80 tok/s
seed-bootstrap · Aug 1, 2026
——
Input price
$3/1M
seed-bootstrap · Aug 1, 2026
$2.5/1M
openrouter · Aug 17, 2026
+$0.5/1M
Output price
$15/1M
seed-bootstrap · Aug 1, 2026
$12.5/1M
openrouter · Aug 17, 2026
+$2.5/1M
Context window
200k
seed-bootstrap · Aug 1, 2026
1M
openrouter · Aug 17, 2026
+800k

Workload Cost & Savings Calculator

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

Save 17% with Claude Opus 5 (batch)
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Claude 3.5 Sonnet$330.00 / mo
In: $105Out: $225
Claude Opus 5 (batch)$275.00 / mo
In: $87.5Out: $187.5
Estimated Cost Delta

Claude Opus 5 (batch) is estimated to save $55.00/month ($660/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude Opus 5 (batch):Pick Claude Opus 5 (batch) when you are optimizing output cost.
  • 2
    Claude Opus 5 (batch):Pick Claude Opus 5 (batch) for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatClaude Opus 5 (batch)

Lower output list price ($12.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGClaude Opus 5 (batch)

Larger window (1M).

Screenshots / visionClaude 3.5 Sonnet

Claude 3.5 Sonnet is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatClaude Opus 5 (batch)Lower output list price ($12.5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGClaude Opus 5 (batch)Larger window (1M).
Screenshots / visionClaude 3.5 SonnetClaude 3.5 Sonnet is the side marked multimodal in the catalog.

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Claude 3.5 Sonnet

Elo 1,280
SWE-bench49%
Speed (tok/s)80 tok/s
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M
Anthropic

Claude Opus 5 (batch)

Elo n/a
SWE-bench—
Speed (tok/s)1M
Input / 1M Tokens$2.5/1M
Output / 1M Tokens$12.5/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Sonnet or Claude Opus 5 (batch)?
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 3.5 Sonnet or Claude Opus 5 (batch)?
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?
Claude Opus 5 (batch) output tokens are $12.5/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Sonnet or Claude Opus 5 (batch)?
We do not have TTFT for both models.
Which has the larger context window?
Claude Opus 5 (batch) accepts 1M tokens versus 200k.
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 3.5 Sonnet and Claude Opus 5 (batch) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Claude 3.5 Sonnet matchups →|All Claude Opus 5 (batch) matchups →
Claude 3.5 Sonnet vs Claude 3.7 Sonnet (next sonnet)Claude Opus 4.5 vs Claude 3.5 SonnetClaude Opus 4.6 vs Claude 3.5 SonnetClaude Sonnet 4.5 vs Claude 3.5 SonnetClaude Opus 5 vs Claude 3.5 SonnetClaude Fable 5 vs Claude 3.5 Sonnet