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deepseek-reasoner (legacy alias)

Deprecated

Legacy model-name alias, NOT a separate model. Official docs: 'deepseek-chat & deepseek-reasoner will be fully retired and inaccessible after Jul 24th, 2026, 15:59 (UTC Time). (Currently routing to deepseek-v4-flash non-thinking/thinking).' deepseek-reasoner = THINKING mode of deepseek-v4-flash. Exact retirement timestamp: 2026-07-24 15:59 UTC. Replacement: use explicit name deepseek-v4-flash (thinking mode). Pricing shown matches deepseek-v4-flash since it routes there. This alias historically mapped to DeepSeek-R1 / V3-series thinking; as of the V4 Preview it routes to V4-Flash thinking.

Lifecycle warning

This model is deprecated. Scheduled shutdown: 24 Jul 2026. Recommended migration: DeepSeek-V4-Flash.

Provider
DeepSeek
Status
Deprecated
Input price
$0.14 / 1M tokens
Output price
$0.28 / 1M tokens
Cached input
$0.003 / 1M tokens
Blended price
$0.175 / 1M tokens
Context window
1,000,000 tokens (1M)
Max output
384,000 tokens
Modality
text
Knowledge cutoff
—
Released
—
API string
deepseek-reasoner

Source: DeepSeek official documentation ↗

See also

Compare deepseek-reasoner (legacy alias) with…

deepseek-reasoner (legacy alias) vs Claude Opus 4.8→

$0.175 vs $10 blended /M

deepseek-reasoner (legacy alias) vs Claude Opus 4.7→

$0.175 vs $10 blended /M

deepseek-reasoner (legacy alias) vs Claude Opus 4.6→

$0.175 vs $10 blended /M

deepseek-reasoner (legacy alias) vs Claude Opus 4.5→

$0.175 vs $10 blended /M