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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. Anthropic: Claude Sonnet 4.6 vs DeepSeek V3

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

Anthropic: Claude Sonnet 4.6 vs DeepSeek V3 benchmark

In this head-to-head showdown, DeepSeek V3 is more budget-friendly at $1.029/1M 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 Anthropic: Claude Sonnet 4.6 if your priority is peak reasoning, complex code generation, and top preference Elo. Choose DeepSeek V3 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

Anthropic: Claude Sonnet 4.6 (1)DeepSeek V3 (2)
Anthropic: Claude Sonnet 4.6
1 of 3 Wins
✓Context window
DeepSeek V3
2 of 3 Wins
✓Input price✓Output price
Anthropic
Leads 1 of 3 metrics
Anthropic: Claude Sonnet 4.6

Auto-discovered from OpenRouter (anthropic/claude-sonnet-4.6). Preview until a second source matches.

$15/1M out
DeepSeek
Leads 2 of 3 metrics
DeepSeek V3

Prior DeepSeek flagship. Baseline for v3 vs v4.

Elo 1,310$1.0287/1M out
Top Rival Showdowns for Anthropic: Claude Sonnet 4.6
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 LeaderDeepSeek V3 Wins

DeepSeek V3

$1.0287 / 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.

Anthropic: Claude Sonnet 4.6 (1)vsDeepSeek V3 (8)
Anthropic: Claude Sonnet 4.6: 1W (11%)Overall: DeepSeek V3DeepSeek V3: 8W (89%)
← Anthropic: Claude Sonnet 4.6DeepSeek V3 →
🏆DeepSeek V3(4/5)

Intelligence & Reasoning

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

Benchmark
Anthropic: Claude Sonnet 4.6vsDeepSeek V3
Preference Elo
—vs1,310
Coding Elo
—vs—
SWE-bench
—vs48.6%
LiveBench
—vs55.4%
GPQA Diamond
—vs59.1%
Anthropic: Claude Sonnet 4.6: 0WDeepSeek V3: 4W
🏆DeepSeek V3(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Anthropic: Claude Sonnet 4.6vsDeepSeek V3
Output speed
—vs66 tok/s
Time to first token
—vs380 ms
Anthropic: Claude Sonnet 4.6: 0WDeepSeek V3: 2W
🏆DeepSeek V3(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Anthropic: Claude Sonnet 4.6vsDeepSeek V3
Output price
$15/1Mvs$1.029/1M+$13.971/1M
Input price
$3/1Mvs$0.257/1M+$2.743/1M
Context window
1Mvs164k+836k
Anthropic: Claude Sonnet 4.6: 1WDeepSeek V3: 2W

Side-by-Side Benchmark Matrix

Preference Elo
Anthropic: Claude Sonnet 4.6—
DeepSeek V31,310
lmarena · Aug 17, 2026
LiveBench
Anthropic: Claude Sonnet 4.6—
DeepSeek V355.4%
livebench · Aug 17, 2026
SWE-bench
Anthropic: Claude Sonnet 4.6—
DeepSeek V348.6%
swebench · Aug 17, 2026
GPQA Diamond
Anthropic: Claude Sonnet 4.6—
DeepSeek V359.1%
seed-bootstrap · Aug 1, 2026
Time to first token
Anthropic: Claude Sonnet 4.6—
DeepSeek V3380 ms
seed-bootstrap · Aug 1, 2026
Output speed
Anthropic: Claude Sonnet 4.6—
DeepSeek V366 tok/s
seed-bootstrap · Aug 1, 2026
Input price+$2.743/1M
Anthropic: Claude Sonnet 4.6$3/1M
openrouter · Aug 17, 2026
DeepSeek V3$0.257/1M
openrouter · Aug 17, 2026
Output price+$13.971/1M
Anthropic: Claude Sonnet 4.6$15/1M
openrouter · Aug 17, 2026
DeepSeek V3$1.029/1M
openrouter · Aug 17, 2026
Context window+836k
Anthropic: Claude Sonnet 4.61M
openrouter · Aug 17, 2026
DeepSeek V3164k
openrouter · Aug 17, 2026
BenchmarkAnthropic: Claude Sonnet 4.6DeepSeek V3Advantage Delta
Preference Elo—
1,310
lmarena · Aug 17, 2026
—
LiveBench—
55.4%
livebench · Aug 17, 2026
—
SWE-bench—
48.6%
swebench · Aug 17, 2026
—
GPQA Diamond—
59.1%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
380 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
66 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$3/1M
openrouter · Aug 17, 2026
$0.257/1M
openrouter · Aug 17, 2026
+$2.743/1M
Output price
$15/1M
openrouter · Aug 17, 2026
$1.029/1M
openrouter · Aug 17, 2026
+$13.971/1M
Context window
1M
openrouter · Aug 17, 2026
164k
openrouter · Aug 17, 2026
+836k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 93% with DeepSeek V3
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Anthropic: Claude Sonnet 4.6$330.00 / mo
In: $105Out: $225
DeepSeek V3$24.44 / mo
In: $9.01Out: $15.43
Estimated Cost Delta

DeepSeek V3 is estimated to save $305.56/month ($3,667/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    DeepSeek V3:Pick DeepSeek V3 when you are optimizing output cost.
  • 2
    Anthropic: Claude Sonnet 4.6:Pick Anthropic: Claude Sonnet 4.6 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatDeepSeek V3

Lower output list price ($1.029/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGAnthropic: Claude Sonnet 4.6

Larger window (1M).

Screenshots / visionDeepSeek V3

DeepSeek V3 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatDeepSeek V3Lower output list price ($1.029/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGAnthropic: Claude Sonnet 4.6Larger window (1M).
Screenshots / visionDeepSeek V3DeepSeek V3 is the side marked multimodal in the catalog.
Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Anthropic

Anthropic: Claude Sonnet 4.6

Elo n/a
SWE-bench—
Speed (tok/s)1M
Input / 1M Tokens$3/1M
Output / 1M Tokens$15/1M
DeepSeek

DeepSeek V3

Elo 1,310
SWE-bench48.6%
Speed (tok/s)66 tok/s
Input / 1M Tokens$0.257/1M
Output / 1M Tokens$1.029/1M

Frequently Asked Questions

Which is better overall, Anthropic: Claude Sonnet 4.6 or DeepSeek V3?
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, Anthropic: Claude Sonnet 4.6 or DeepSeek V3?
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?
DeepSeek V3 output tokens are $1.029/1M versus $15/1M. Input prices and retry rates still move the real bill.
Which is faster, Anthropic: Claude Sonnet 4.6 or DeepSeek V3?
We do not have TTFT for both models.
Which has the larger context window?
Anthropic: Claude Sonnet 4.6 accepts 1M tokens versus 164k.
Can I self-host either model?
DeepSeek V3 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. Anthropic: Claude Sonnet 4.6 and DeepSeek V3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Anthropic: Claude Sonnet 4.6 matchups →|All DeepSeek V3 matchups →
DeepSeek V3 vs DeepSeek Coder V2 (previous deepseek)DeepSeek V3 vs DeepSeek R1 (next deepseek)Claude Opus 4.5 vs DeepSeek V3Claude Opus 4.6 vs DeepSeek V3Claude Sonnet 4.5 vs DeepSeek V3DeepSeek V4 Pro vs DeepSeek V3