High-volume, cost-sensitive work
Choose DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731 costs 26% less on a typical mix of three input tokens for every output token ($0.15 against $0.20 per million tokens).
Claude Haiku 5.5 vs DeepSeek V4 Flash 0731: price, context and capabilities
Choose Claude Haiku 5.5 for reused prompts and documents (RAG, agents), images as input and the latest release. Choose DeepSeek V4 Flash 0731 for high-volume, cost-sensitive work and writing and code generation.
In short
- DeepSeek V4 Flash 0731 is 26% cheaper than Claude Haiku 5.5 at the headline price ($0.1488 / 1M tokens vs $0.20 / 1M tokens).
- DeepSeek V4 Flash 0731 reads more per request: 1.05M tokens against 1M.
- Claude Haiku 5.5 is the newer model (October 2026, against Jul 31, 2026).
- Only Claude Haiku 5.5 offers vision, batch api.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Writing and code generation
Choose DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731 charges $0.24 per million output tokens, against $0.50 for Claude Haiku 5.5. Output dominates the bill when answers are long.
Reused prompts and documents (RAG, agents)
Choose Claude Haiku 5.5
Claude Haiku 5.5 charges $0.01 per million cached input tokens, against $0.02 for DeepSeek V4 Flash 0731.
Images as input
Choose Claude Haiku 5.5
Claude Haiku 5.5 accepts images as input; DeepSeek V4 Flash 0731 does not.
Latest release
Choose Claude Haiku 5.5
Claude Haiku 5.5 is the newer release (October 2026, against Jul 31, 2026 for DeepSeek V4 Flash 0731).
Monthly cost at three volumes
| Volume | Claude Haiku 5.5 | DeepSeek V4 Flash 0731 | Difference |
|---|---|---|---|
| Prototype: 1M input, 250K output tokens | $0.23 | $0.18 | DeepSeek V4 Flash 0731, $0.05 less |
| Production: 20M input, 5M output tokens | $4.50 | $3.57 | DeepSeek V4 Flash 0731, $0.93 less |
| Scale: 500M input, 100M output tokens | $100.00 | $83.30 | DeepSeek V4 Flash 0731, $16.70 less |
Standard rates, without caching or batch discounts. Volumes are per month.
Specifications side by side
| Claude Haiku 5.5 | DeepSeek V4 Flash 0731 | |
|---|---|---|
| Provider | Anthropic | DeepSeek |
| Category | Language models | Language models |
| Status | Generally available | Generally available |
| Headline price | $0.20 / 1M tokens | $0.1488 / 1M tokens |
| Input | $0.10 / 1M tokens | $0.119 / 1M tokens |
| Output | $0.50 / 1M tokens | $0.238 / 1M tokens |
| Cached input | $0.01 / 1M tokens | $0.0238 / 1M tokens |
| Context window | 1M | 1.05M |
| Max output | 128k | 944k |
| Released | October 2026 | Jul 31, 2026 |
| Knowledge cutoff | June 2026 | No data |
| Licence | Proprietary | Proprietary |
| Capabilities | Vision, Reasoning, Tool calling, Structured output, Prompt caching, Batch API | Reasoning, Tool calling, Structured output, Prompt caching |
| API model id | claude-haiku-5-5 | deepseek-v4-flash-0731 |
Benchmarks side by side
Leader in bold.
| Benchmark | Claude Haiku 5.5 | DeepSeek V4 Flash 0731 |
|---|---|---|
| Intelligence Index | 43.4 | No data |
| SciCode | 55% | No data |
| Humanity's Last Exam | 44.4% | No data |
| Long-context reasoning (AA-LCR) | 82.7% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose Claude Haiku 5.5 or DeepSeek V4 Flash 0731?
Choose Claude Haiku 5.5 for reused prompts and documents (RAG, agents), images as input and the latest release. Choose DeepSeek V4 Flash 0731 for high-volume, cost-sensitive work and writing and code generation.
Which is cheaper, Claude Haiku 5.5 or DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 is 26% cheaper than Claude Haiku 5.5 at the headline price ($0.1488 / 1M tokens vs $0.20 / 1M tokens).
Which has the larger context window, Claude Haiku 5.5 or DeepSeek V4 Flash 0731?
DeepSeek V4 Flash 0731 reads more per request: 1.05M tokens against 1M.
What is the difference between Claude Haiku 5.5 and DeepSeek V4 Flash 0731?
Claude Haiku 5.5 is made by Anthropic and DeepSeek V4 Flash 0731 by DeepSeek. DeepSeek V4 Flash 0731 is 26% cheaper than Claude Haiku 5.5 at the headline price ($0.1488 / 1M tokens vs $0.20 / 1M tokens). DeepSeek V4 Flash 0731 reads more per request: 1.05M tokens against 1M. Claude Haiku 5.5 is the newer model (October 2026, against Jul 31, 2026). Only Claude Haiku 5.5 offers vision, batch api.
How much do Claude Haiku 5.5 and DeepSeek V4 Flash 0731 cost per month?
At 20 million input and 5 million output tokens a month, Claude Haiku 5.5 costs $4.50 and DeepSeek V4 Flash 0731 costs $3.57, at standard rates.
Which is newer, Claude Haiku 5.5 or DeepSeek V4 Flash 0731?
Claude Haiku 5.5 was released on October 2026 and DeepSeek V4 Flash 0731 on Jul 31, 2026.