AI Flash Report

Claude Opus 4.5 vs DeepSeek V3.2: Benchmarks, Pricing & Capabilities Compared

TL;DR — Claude Opus 4.5 wins for reasoning · DeepSeek V3.2 wins for cost + long-context.

Claude Opus 4.5 Anthropic
Released
2025-11-24
Context window
500K tokens
Input price
$15.00 / Mtok
Output price
$75.00 / Mtok
Key features
  • First model to break 80.9% on SWE-Bench Verified
  • 67% price reduction vs previous Opus
  • Extended reasoning capabilities
DeepSeek V3.2 DeepSeek
Released
2026-02-12
Context window
1M tokens
Input price
$0.27 / Mtok
Output price
$1.10 / Mtok
Key features
  • 1M+ token context window (10x expansion)
  • Improved reasoning capabilities
  • Open source release

Benchmark comparison

Benchmark Claude Opus 4.5 DeepSeek V3.2
MMLU 92.8% ✓ 90.1%

Pricing comparison

Metric Claude Opus 4.5 DeepSeek V3.2
Input ($/Mtok) $15.00 $0.27
Output ($/Mtok) $75.00 $1.10
Cached input ($/Mtok) $1.50 $0.07
Cost per 1M-token roundtrip (1M in + 1M out) $90.00 $1.37

Context window & modalities

Attribute Claude Opus 4.5 DeepSeek V3.2
Context window 500K tokens 1M tokens
Input modalities text, image, PDF text
Output modalities text text
Knowledge cutoff 2025-08 2025-09

Verdict by use case

Coding
Insufficient data
Basis: SWE-bench

No shared coding benchmark.

Reasoning
→ Claude Opus 4.5
Basis: GPQA Diamond

Claude Opus 4.5 82.4% vs DeepSeek V3.2 68.4% on GPQA Diamond.

Math
Insufficient data
Basis: MATH / AIME

No shared math benchmark.

Long context
→ DeepSeek V3.2
Basis: Context window

Claude Opus 4.5 500K tokens vs DeepSeek V3.2 1M tokens.

Cost
→ DeepSeek V3.2
Basis: Input $/Mtok

Claude Opus 4.5 $15/Mtok vs DeepSeek V3.2 $0.27/Mtok input.

Changelog & releases

Claude Opus 4.5
Released 2025-11-24
Predecessor: anthropic-claude-opus-4-1
DeepSeek V3.2
Released 2026-02-12
Predecessor: deepseek-deepseek-v3
  • 10x context window expansion (128K → 1M+ tokens)
  • Sliding-window attention for long-context throughput
  • Improved chain-of-thought reasoning
  • Native FP8 inference support

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