token.app › Compare › Claude Opus 4.8 (Fast) vs DeepSeek V4 Flash 0731

Claude Opus 4.8 (Fast) vs DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is 178× cheaper per token on a blended 3:1 basis. DeepSeek V4 Flash 0731 accepts the larger context window (1.0M).

Head to head
Blended price uses a 3:1 input:output mix
Claude Opus 4.8 (Fast)DeepSeek V4 Flash 0731
ProviderAnthropicDeepSeek
Input $/1M$10.00$0.090
Output $/1M$50.00$0.180
Blended $/1M$20.00$0.113
Context window1M1.0M
Max output128K384K
ReleasedMay 2026Jul 2026
LicenceProprietaryOpen weights
Choose Claude Opus 4.8 (Fast) if…
  • No clear advantage on the data we hold.
Choose DeepSeek V4 Flash 0731 if…
  • Costs less per token — $0.113 vs $20.00 blended
  • Larger context window (1.0M)
  • Open weights — self-hostable
  • Newer model (released Jul 2026)
FAQ
Which is better, Claude Opus 4.8 (Fast) or DeepSeek V4 Flash 0731?
We do not hold independently-run benchmark scores covering both Claude Opus 4.8 (Fast) and DeepSeek V4 Flash 0731, so we make no quality claim. Their pricing and specifications are compared on this page.
Is Claude Opus 4.8 (Fast) cheaper than DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is cheaper: $0.113 versus $20.00 per million tokens blended at 3:1 input:output. Input alone: $10.00 vs $0.090. Output alone: $50.00 vs $0.180.
What context windows do Claude Opus 4.8 (Fast) and DeepSeek V4 Flash 0731 have?
Claude Opus 4.8 (Fast): 1,000,000 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes Claude Opus 4.8 (Fast) and DeepSeek V4 Flash 0731?
Claude Opus 4.8 (Fast) is made by Anthropic. DeepSeek V4 Flash 0731 is made by DeepSeek.
Related comparisons
Claude Opus 4.8 (Fast) full details DeepSeek V4 Flash 0731 full details Claude Opus 4.8 (Fast) vs Ling 3.0 Tiny (free) Claude Opus 4.8 (Fast) vs Muse Spark 1.2 Claude Opus 4.8 (Fast) vs Qwen3.8 Max Claude Opus 4.8 (Fast) vs DeepSeek V4 Flash Latest Claude Opus 4.8 (Fast) vs Inkling Small Claude Opus 4.8 (Fast) vs Qwen3.7 Flash