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Precision Benchmarks

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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 Anthropic: Claude Opus Latest

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

Claude 3.5 Sonnet vs Anthropic: Claude Opus Latest benchmark

In this head-to-head showdown, Claude 3.5 Sonnet is more budget-friendly at $15/1M 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: Both Claude 3.5 Sonnet and Anthropic: Claude Opus Latest present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
Share Analysis:Share:
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Executive Verdict Summary

Claude 3.5 Sonnet holds empirical advantage (2 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 3.5 SonnetLowest 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 (2)Anthropic: Claude Opus Latest (1)
Claude 3.5 Sonnet
2 of 3 Wins
✓Input price✓Output price
Anthropic: Claude Opus Latest
1 of 3 Wins
✓Context window
Anthropic
Leads 2 of 3
Claude 3.5 Sonnet

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

Elo 1,280In: $3 · Out: $15/1M
~anthropic
Leads 1 of 3
Anthropic: Claude Opus Latest

Auto-discovered from OpenRouter (~anthropic/claude-opus-latest). Preview until a second source matches.

In: $5 · Out: $25/1M
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 3.5 Sonnet Wins

Claude 3.5 Sonnet

$15 / 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 (8)vsAnthropic: Claude Opus Latest (1)
Claude 3.5 Sonnet: 8W (89%)Overall: Claude 3.5 SonnetAnthropic: Claude Opus Latest: 1W (11%)
← Claude 3.5 SonnetAnthropic: Claude Opus Latest →
🏆Claude 3.5 Sonnet Leads(4/5)

Intelligence & Reasoning

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

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

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Claude 3.5 SonnetvsAnthropic: Claude Opus Latest
Output speed
80 tok/svs—
Time to first token
280 msvs—
Claude 3.5 Sonnet: 2WAnthropic: Claude Opus Latest: 0W
🏆Claude 3.5 Sonnet Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Claude 3.5 SonnetvsAnthropic: Claude Opus Latest
Output price
$15/1Mvs$25/1M+$10/1M
Input price
$3/1Mvs$5/1M+$2/1M
Context window
200kvs1M+800k
Claude 3.5 Sonnet: 2WAnthropic: Claude Opus Latest: 1W

Side-by-Side Benchmark Matrix

Claude 3.5 SonnetAnthropic: Claude Opus Latest
Preference Elo
Claude 3.5 Sonnet1,280
Anthropic: Claude Opus Latest—
LiveBench
Claude 3.5 Sonnet52.1%
Anthropic: Claude Opus Latest—
SWE-bench
Claude 3.5 Sonnet49%
Anthropic: Claude Opus Latest—
GPQA Diamond
Claude 3.5 Sonnet65%
Anthropic: Claude Opus Latest—
Time to first token
Claude 3.5 Sonnet280 ms
Anthropic: Claude Opus Latest—
Output speed
Claude 3.5 Sonnet80 tok/s
Anthropic: Claude Opus Latest—
Input priceClaude 3.5 Sonnet +$2/1M
Claude 3.5 Sonnet$3/1M
Anthropic: Claude Opus Latest$5/1M
Output priceClaude 3.5 Sonnet +$10/1M
Claude 3.5 Sonnet$15/1M
Anthropic: Claude Opus Latest$25/1M
Context windowAnthropic: Claude Opus Latest +800k
Claude 3.5 Sonnet200k
Anthropic: Claude Opus Latest1M
BenchmarkClaude 3.5 SonnetAnthropic: Claude Opus LatestAdvantage 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
$5/1M
openrouter · Aug 17, 2026
+$2/1M
Output price
$15/1M
seed-bootstrap · Aug 1, 2026
$25/1M
openrouter · Aug 17, 2026
+$10/1M
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 40% with Claude 3.5 Sonnet
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
Anthropic: Claude Opus Latest$550.00 / mo
In: $175Out: $375
Estimated Cost Delta

Claude 3.5 Sonnet is estimated to save $220.00/month ($2,640/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Claude 3.5 Sonnet:Pick Claude 3.5 Sonnet when you are optimizing output cost.
  • 2
    Anthropic: Claude Opus Latest:Pick Anthropic: Claude Opus Latest for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatClaude 3.5 Sonnet

Lower output list price ($15/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGAnthropic: Claude Opus Latest

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 3.5 SonnetLower output list price ($15/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGAnthropic: Claude Opus LatestLarger window (1M).
Screenshots / visionClaude 3.5 SonnetClaude 3.5 Sonnet is the side marked multimodal in the catalog.

Cast Your Matchup Vote

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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

Anthropic: Claude Opus Latest

Elo n/a
SWE-bench—
Speed (tok/s)1M
Input / 1M Tokens$5/1M
Output / 1M Tokens$25/1M

Frequently Asked Questions

Which is better overall, Claude 3.5 Sonnet or Anthropic: Claude Opus Latest?
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 Anthropic: Claude Opus Latest?
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 3.5 Sonnet output tokens are $15/1M versus $25/1M. Input prices and retry rates still move the real bill.
Which is faster, Claude 3.5 Sonnet or Anthropic: Claude Opus Latest?
We do not have TTFT for both models.
Which has the larger context window?
Anthropic: Claude Opus Latest 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 Anthropic: Claude Opus Latest 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 Anthropic: Claude Opus Latest 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