Claude Haiku 4.5 vs DeepSeek V4-Pro
Anthropic's Claude Haiku 4.5 and DeepSeek's DeepSeek V4-Pro both target production language workloads, but they price and behave differently. Here is the side-by-side.
Pricing checked against provider documentation on . How we verify
The short answer
DeepSeek V4-Pro is the cheaper option — roughly 2.0x less on a blended workload, and it suits frontier-adjacent reasoning at open-weight prices. Claude Haiku 4.5 justifies its premium when you need lowest-latency claude responses.
Anthropic • Claude 4.5
$1.00 / $5.00
/ 1M tokens (input / output)
The fastest model Anthropic ships, still on the Claude 4.5 generation with a 200K window and an early-2025 knowledge cutoff. Worth it when response latency is the product requirement; otherwise Sonnet 5 offers more capability and five times the context for twice the price.
DeepSeek • DeepSeek V4
$0.66 / $1.98
/ 1M tokens (input / output)
A 1.6T-parameter mixture-of-experts model with 49B active, released under MIT and callable through DeepSeek's own API with configurable reasoning effort. Since 16 August 2026 DeepSeek bills on a peak/off-peak schedule, so the hour you run a job changes the bill by exactly 2x — which makes it unusually well suited to scheduled batch work.
Input price
DeepSeek V4-Pro is 34% cheaper than Claude Haiku 4.5 on input tokens.
Output price
DeepSeek V4-Pro is 60% cheaper than Claude Haiku 4.5 on output tokens — usually the side that dominates the bill.
Monthly cost at three workload sizes
Standard (non-batch, non-cached) rates. Reasoning models will exceed these figures because thinking tokens bill as output.
| Workload | Claude Haiku 4.5 | DeepSeek V4-Pro | Difference |
|---|---|---|---|
| Light — 1M in / 200K out | $2 | $1 | $1 |
| Moderate — 10M in / 2M out | $20 | $11 | $9 |
| Heavy — 100M in / 20M out | $200 | $106 | $94 |
Specification comparison
| Attribute | Claude Haiku 4.5 | DeepSeek V4-Pro |
|---|---|---|
| Input (/ 1M tokens) | $1.00 | $0.66 |
| Output (/ 1M tokens) | $5.00 | $1.98 |
| Cached input | $0.10 | $0.02 |
| Context window | 200,000 tokens | 1,000,000 tokens |
| Max output | 64,000 tokens | 131,072 tokens |
| Native reasoning | Yes | Yes |
| Knowledge cutoff | 2025-02 | 2026-03 |
| Relative latency | low | medium |
| Open weights | No | MIT |
| API model ID | claude-haiku-4-5 | deepseek-v4-pro |
| Status | stable | stable |
DeepSeek V4-Pro: Off-peak rate shown. Peak rates are exactly double ($1.32 input / $3.96 output) during 01:00–04:00 and 06:00–10:00 UTC, Monday to Friday. Cache hits cost roughly 3% of a cache miss.
Choose Claude Haiku 4.5 if…
- Real-time chat suggestions
- Lightweight extraction and tagging
- Guardrail and routing calls
- High-frequency background jobs
Choose DeepSeek V4-Pro if…
- Overnight batch reasoning jobs
- Self-hosted deployments needing MIT terms
- Cost-sensitive coding agents
- Chinese-language workloads
Frequently asked
Is Claude Haiku 4.5 or DeepSeek V4-Pro cheaper?
DeepSeek V4-Pro is cheaper. On a blended 3:1 input-to-output workload it costs about 2.0x less than Claude Haiku 4.5.
Which has the larger context window, Claude Haiku 4.5 or DeepSeek V4-Pro?
DeepSeek V4-Pro has the larger window at 1M tokens versus 200K.
Should I use Claude Haiku 4.5 or DeepSeek V4-Pro?
Pick Claude Haiku 4.5 for lowest-latency claude responses. Pick DeepSeek V4-Pro for frontier-adjacent reasoning at open-weight prices. If cost dominates the decision, DeepSeek V4-Pro wins; if you need the capability ceiling, benchmark both on your own evals before committing.