DeepSeek V4.1 Flash vs Grok 4.3: pricing and benchmarks
DeepSeek V4.1 Flash is 76% cheaper on input tokens ($0.30 vs $1.25 per 1M). DeepSeek V4.1 Flash is 52% cheaper on output tokens ($1.20 vs $2.50 per 1M). On our document Q&A workload (50,000 questions a month), DeepSeek V4.1 Flash costs $156.00 a month versus $575.00 for Grok 4.3, 73% less. Epoch AI has not published a capability index score for DeepSeek V4.1 Flash and Grok 4.3 yet.
Prices verified September 14, 2026.
Which should you choose?
Epoch AI has not published a capability index score for DeepSeek V4.1 Flash and Grok 4.3 yet.
DeepSeek V4.1 Flash costs $0.525 per 1M tokens (3:1 input-to-output mix) vs $1.563 for Grok 4.3, 66% less.
Pricing and specs
| DeepSeek V4.1 Flash | Grok 4.3 | |
|---|---|---|
| Provider | DeepSeek | xAI |
| API model ID | deepseek-flash | grok-4.3 |
| Input / 1M tokens | $0.30 | $1.25 |
| Cached input / 1M tokens | $0.006 | $0.20 |
| Output / 1M tokens | $1.20 | $2.50 |
| Long-context rates | — | $2.50 in / $5.00 out above 200K prompt tokens |
| Context window | 1M tokens | 1M tokens |
| Max output | 384K tokens | — |
| Batch discount | — | — |
Monthly cost for real workloads
| Workload | DeepSeek V4.1 Flash | Grok 4.3 | Difference |
|---|---|---|---|
Support chatbot 100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each. | $93.00 | $287.50 | DeepSeek V4.1 Flash 68% cheaper |
Document Q&A (RAG) 50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each. | $156.00 | $575.00 | DeepSeek V4.1 Flash 73% cheaper |
Coding agent 10,000 agent steps a month, ~40,000 input tokens each (70% read from the prompt cache) and ~2,000 output tokens. | $61.68 | $256.00 | DeepSeek V4.1 Flash 76% cheaper |
Estimates use standard list prices and ignore cache-write surcharges. Different tokenizers can count the same text differently, so test with your own prompts.
DeepSeek V4.1 Flash vs Grok 4.3 cost calculator
- $156.00/mo$0.0031 / request
- Grok 4.3xAI$575.00/mo$0.01 / request
Standard-tier list prices. Long-context rates apply automatically where the provider publishes a threshold. Excludes cache-write surcharges, taxes, batch and volume discounts.
DeepSeek V4.1 Flash pricing notes
DeepSeek’s low-cost model with thinking and non-thinking modes, tool calls and vision input.
- Prices shown are peak rates. Off-peak rates are half: peak hours are 01:00–04:00 and 06:00–10:00 UTC, Monday to Friday.
- Compatible with both OpenAI-format and Anthropic-format APIs.
Grok 4.3 pricing notes
An earlier Grok 4 model with a 1M-token context window.
- Requests with 200K or more prompt tokens are billed at $2.50 input / $0.40 cached / $5 output for all tokens.
Frequently asked questions
- Is DeepSeek V4.1 Flash cheaper than Grok 4.3?
- DeepSeek V4.1 Flash is 76% cheaper on input tokens ($0.30 vs $1.25 per 1M). DeepSeek V4.1 Flash is 52% cheaper on output tokens ($1.20 vs $2.50 per 1M). On our document Q&A workload (50,000 questions a month), DeepSeek V4.1 Flash costs $156.00 a month versus $575.00 for Grok 4.3, 73% less.
- Which is more capable, DeepSeek V4.1 Flash or Grok 4.3?
- Epoch AI has not published a capability index score for DeepSeek V4.1 Flash and Grok 4.3 yet.
- How much does DeepSeek V4.1 Flash cost per 1M tokens?
- DeepSeek V4.1 Flash costs $0.30 per 1M input tokens and $1.20 per 1M output tokens, and $0.006 per 1M cached input tokens on DeepSeek’s standard tier.
- How much does Grok 4.3 cost per 1M tokens?
- Grok 4.3 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens, and $0.20 per 1M cached input tokens on xAI’s standard tier.
- Which has the larger context window, DeepSeek V4.1 Flash or Grok 4.3?
- Both offer a 1M-token context window.