Claude Haiku 4.5 vs DeepSeek V4.1 Flash: pricing and benchmarks
DeepSeek V4.1 Flash is 70% cheaper on input tokens ($0.30 vs $1.00 per 1M). DeepSeek V4.1 Flash is 76% cheaper on output tokens ($1.20 vs $5.00 per 1M). On our document Q&A workload (50,000 questions a month), DeepSeek V4.1 Flash costs $156.00 a month versus $550.00 for Claude Haiku 4.5, 72% less. DeepSeek V4.1 Flash scores 155.6 on the Epoch Capabilities Index vs 142.4 for Claude Haiku 4.5.
Prices verified October 29, 2026.
Which should you choose?
DeepSeek V4.1 Flash scores 155.6 on the Epoch Capabilities Index vs 142.4 for Claude Haiku 4.5.
DeepSeek V4.1 Flash costs $0.525 per 1M tokens (3:1 input-to-output mix) vs $2.00 for Claude Haiku 4.5, 74% less.
DeepSeek V4.1 Flash delivers equal or higher overall capability for 74% less.
Pricing and specs
| Claude Haiku 4.5 | DeepSeek V4.1 Flash | |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| API model ID | claude-haiku-4-5-20251001 | deepseek-flash |
| Input / 1M tokens | $1.00 | $0.30 |
| Cached input / 1M tokens | $0.10 | $0.006 |
| Output / 1M tokens | $5.00 | $1.20 |
| Long-context rates | — | — |
| Context window | 200K tokens | 1M tokens |
| Max output | 64K tokens | 384K tokens |
| Batch discount | 50% off | — |
Benchmarks
| Claude Haiku 4.5 | DeepSeek V4.1 Flash | |
|---|---|---|
| Epoch Capabilities Index | 142.4 | 155.6 |
| GPQA Diamond· Science reasoning | 71.2% | 89.8% |
| FrontierMath (Tiers 1–3)· Advanced math | — | 67.4% |
| SimpleQA Verified· Factual accuracy | 13.2% | 42.9% |
| ARC-AGI-2· Abstract reasoning | 4.0% | 72.9% |
| DeepSWE· Coding | — | — |
| APEX-Agents· Agentic work | — | 39.5% |
Source: Epoch AI, best recorded result per model (CC BY 4.0). A dash means no published score. See all benchmarks
Monthly cost for real workloads
| Workload | Claude Haiku 4.5 | DeepSeek V4.1 Flash | Difference |
|---|---|---|---|
Support chatbot 100,000 replies a month, ~1,500 input tokens (system prompt + history) and ~400 output tokens each. | $350.00 | $93.00 | DeepSeek V4.1 Flash 73% cheaper |
Document Q&A (RAG) 50,000 questions a month with ~8,000 tokens of retrieved context and ~600 output tokens each. | $550.00 | $156.00 | DeepSeek V4.1 Flash 72% 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. | $248.00 | $61.68 | DeepSeek V4.1 Flash 75% 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.
Claude Haiku 4.5 vs DeepSeek V4.1 Flash cost calculator
- $156.00/mo$0.0031 / request
- Claude Haiku 4.5Anthropic$550.00/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.
Claude Haiku 4.5 pricing notes
Anthropic’s previous-generation Haiku model, with a 200K-token context window.
- Cache writes cost $1.25 (5-minute cache) or $2 (1-hour cache) per 1M tokens.
- Uses Anthropic’s previous tokenizer.
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.
- Served by model version DeepSeek-V4.1-Flash-1017; the legacy names deepseek-v4-flash and deepseek-v4-flash-vision-exp route to it at the same price.
- Web Search and Fetch cost $0.75 per 1,000 successful requests each; calls made through Claude Code, Codex or DeepSeek Harness are free until November 1, 2026.
Frequently asked questions
- Is Claude Haiku 4.5 cheaper than DeepSeek V4.1 Flash?
- DeepSeek V4.1 Flash is 70% cheaper on input tokens ($0.30 vs $1.00 per 1M). DeepSeek V4.1 Flash is 76% cheaper on output tokens ($1.20 vs $5.00 per 1M). On our document Q&A workload (50,000 questions a month), DeepSeek V4.1 Flash costs $156.00 a month versus $550.00 for Claude Haiku 4.5, 72% less.
- Which is more capable, Claude Haiku 4.5 or DeepSeek V4.1 Flash?
- DeepSeek V4.1 Flash scores 155.6 on the Epoch Capabilities Index vs 142.4 for Claude Haiku 4.5.
- How much does Claude Haiku 4.5 cost per 1M tokens?
- Claude Haiku 4.5 costs $1.00 per 1M input tokens and $5.00 per 1M output tokens, and $0.10 per 1M cached input tokens on Anthropic’s standard tier.
- 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.
- Which has the larger context window, Claude Haiku 4.5 or DeepSeek V4.1 Flash?
- DeepSeek V4.1 Flash has the larger context window: 1M tokens versus 200K for Claude Haiku 4.5.