AI Model Comparison

Claude Haiku 5.5 vs DeepSeek-V4.1-Flash

Side-by-side comparison of pricing, context window, benchmarks, capabilities, and license. Every figure comes from the developer's own pages, last checked on ; each model's page lists its sources. A figure we could not source shows as a dash.

Quick spec sheet

PropertyClaude Haiku 5.5DeepSeek-V4.1-Flash
ReleasedOct 7, 2026Sep 10, 2026
DeveloperAnthropicDeepSeek
Typemultimodalmultimodal
Licenseproprietaryopen-weight
Context window—1,000,000
Parameters—552B total (MoE); 8B active parameters for input (prefill), 16B for output (decode)
Developer status—Superseded
Input $/M tokens$0.10—
Output $/M tokens$0.50—

Bold green values indicate the winner on that dimension where comparison is meaningful (lower price wins; bigger context wins; more open license wins; newer date wins). Prices are the ones each developer lists today; a model it no longer prices has none.

Capability map

Only Claude Haiku 5.5

No exclusive capabilities

Shared

textimagesreasoningtools

Only DeepSeek-V4.1-Flash

No exclusive capabilities

Reference this comparison

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