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Claude 3.5 SonnetvsDeepSeek V3.2

DeepSeek V3.2 leads 3 of 3 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
0 – 3
DeepSeek V3.2 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 V3.2
DeepSeek · released 2025-12-01
text
Context
131K
Max out
66K
Input /1M
Output /1M
Cached /1M
Scores
8 · 7 core
Quality

Benchmark matrix

BenchmarkClaude 3.5 SonnetDeepSeek V3.2ΔEdge
Reported by both · 3
SWE-bench Verified49% 73.1% -24.1 ptDeepSeek V3.2
GPQA Diamond55.3% epoch82.4% -27.1 ptDeepSeek V3.2
AIME 20253.3% matharena93.1% -89.8 ptDeepSeek V3.2
Only Claude 3.5 Sonnet reports · 1
OTIS Mock AIME 2024-2025 (Epoch AI run)8.5% epochnot reported
Only DeepSeek V3.2 reports · 4
MMLU-Pronot reported85%
AIME 2026not reported94.2% matharena
Humanity's Last Exam (no tools)not reported25.1%
LMArena Elonot reported1424.8
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 V3.2 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 V3.2Edge
Context window200K tokens131K tokensClaude 3.5 Sonnet
Max output8K tokens66K tokensDeepSeek V3.2
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
Released2024-10-222025-12-01
Cited benchmark scores48
Reliability

Provider status

All providers
More matchups

Claude 3.5 Sonnet vs …

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Which one wins on your data?

Public benchmarks are a starting point. Run Claude 3.5 Sonnet and DeepSeek V3.2 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.