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Claude 3.5 SonnetvsDeepSeek V3

DeepSeek V3 leads 3 of 4 shared benchmarks. Claude 3.5 Sonnet has the larger context window (200K tokens).

Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.

Shared benchmarks
1 – 3
DeepSeek V3 leads
Cheaper per token
list price, input + output
Larger context
Claude 3.5 Sonnet
200K tokens
Provider uptime (30d)
100% · 100%
Anthropic · DeepSeek
Claude 3.5 Sonnet
Anthropic · released 2024-10-22
textvision
Context
200K
Max out
8K
Input /1M
$3
Output /1M
$15
Cached /1M
$0.3
Scores
4 · 4 core
DeepSeek V3
DeepSeek · released 2024-12-26
text
Context
128K
Max out
8K
Input /1M
Output /1M
Cached /1M
Scores
8 · 7 core
Quality

Benchmark matrix

BenchmarkClaude 3.5 SonnetDeepSeek V3ΔEdge
Reported by both · 4
SWE-bench Verified49% 42% +7 ptClaude 3.5 Sonnet
GPQA Diamond55.3% epoch59.1% -3.8 ptDeepSeek V3
AIME 20253.3% matharena25% matharena-21.7 ptDeepSeek V3
OTIS Mock AIME 2024-2025 (Epoch AI run)8.5% epoch15.8% epoch-7.3 ptDeepSeek V3
Only Claude 3.5 Sonnet reports · 0
Claude 3.5 Sonnet reports nothing DeepSeek V3 does not.
Only DeepSeek V3 reports · 3
MMLUnot reported88.5%
MMLU-Pronot reported75.9%
LMArena Elonot reported1332.4
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude 3.5 Sonnet minus DeepSeek V3 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing

Side by side

SpecClaude 3.5 SonnetDeepSeek V3Edge
Context window200K tokens128K tokensClaude 3.5 Sonnet
Max output8K tokens8K tokensTie
Input price / 1M$3
Output price / 1M$15
Cached input / 1M$0.3
Input + output / 1M
Lower is cheaper. List prices; batch, tool and regional fees excluded.
$18
Modalitiestext · visiontextClaude 3.5 Sonnet
Released2024-10-222024-12-26
Cited benchmark scores48
Reliability

Provider status

All providers
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Public benchmarks are a starting point. Run Claude 3.5 Sonnet and DeepSeek V3 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.