// AI Platform Drift
DeepSeek V4.1 Flash pricing increased 2-3x, output limit tripled
OpenRouter model catalogue · published 2026-09-25 03:20 UTC
CORRECTED 2026-10-02 17:58 UTC — [CORRECTION · WHAT TO DO] Original: “multiply by 2.5-3x to forecast the new cost.” Fact: For unchanged token volumes, calculate both components: prompt price multiplies by 2.1429 and completion price by 2.8571. The blend is within those bounds, not universally 2.5–3 times.
Stood 182h 38m · cause arithmetic · every correction ↗
Captured arithmetic only; vendor rate validity, applicability and effective conditions remain unverified.
WHAT CHANGEDOpenRouter's deepseek/deepseek-v4.1-flash model pricing increased from $0.00000014 to $0.0000003 per prompt token (2.14x) and $0.00000042 to $0.0000012 per completion token (2.86x). Maximum completion tokens increased from 131,072 to 393,216.
WHY IT MATTERSIf you are using this model in production, your inference costs will roughly triple at current usage levels. The higher output limit may enable longer responses but will amplify the per-token cost increase if you generate near the new maximum.
WHAT TO DOCalculate your current monthly spend on this model and multiply by 2.5-3x to forecast the new cost. If the increase is material, evaluate whether to switch models, reduce usage, or update your budget allocation before next month's bill.
Model-reported confidence 95% (not measured accuracy)
Primary source ↗
written by anthropic/claude-sonnet-4.5
Show the reasoning — raw diff, triage verdict, confidence
RAW DIFF
id: deepseek/deepseek-v4.1-flash name: DeepSeek: DeepSeek V4.1 Flash -pricing.prompt: 0.00000014 -pricing.completion: 0.00000042 +pricing.prompt: 0.0000003 +pricing.completion: 0.0000012 context_length: 1048576 -top_provider.max_completion_tokens: 131072 +top_provider.max_completion_tokens: 393216
HOW IT WAS JUDGED
Triage signals below are model-reported assertions, preserved verbatim; they are not independent arithmetic verification.
| triage verdict | MATERIAL at 0.98, needed 0.5 |
|---|---|
| triage reasoning | Pricing increased significantly across both dimensions; output capacity tripled. |
| signals | pricing.prompt increased 2.14x · pricing.completion increased 2.86x · max_completion_tokens increased 3x (131072 → 393216) |
| suppression | — |
| triage model | anthropic/claude-haiku-4.5 ($0.00000) |
| writer model | anthropic/claude-sonnet-4.5 ($0.00000) |