Claude Haiku 4.5 vs DeepSeek V4 Pro
Claude Haiku 4.5 (2025) and DeepSeek V4 Pro (2026) are frontier reasoning models from Anthropic and DeepSeek. Claude Haiku 4.5 ships a 200k-token context window, while DeepSeek V4 Pro ships a 1M-token context window. On SWE-bench Verified, DeepSeek V4 Pro leads by 7.3 pts. This comparison covers specs, pricing, capabilities, benchmarks, provider availability, and production fit. It focuses on practical selection signals rather than broad model-family marketing.
DeepSeek V4 Pro fits 5x more tokens; pick it for long-context work and Claude Haiku 4.5 for tighter calls.
Specs
| Released | 2025-10-01 | 2026-04-24 |
| Context window | 200k | 1M |
| Parameters | — | 1.6T |
| Architecture | decoder only | mixture of experts |
| License | Proprietary | MIT |
| Knowledge cutoff | 2025-02 | - |
Pricing and availability
| Claude Haiku 4.5 | DeepSeek V4 Pro | |
|---|---|---|
| Input price | $0.8/1M tokens | - |
| Output price | $4/1M tokens | - |
| Providers | - |
Capabilities
| Claude Haiku 4.5 | DeepSeek V4 Pro | |
|---|---|---|
| Vision | ||
| Multimodal | ||
| Reasoning | ||
| Function calling | ||
| Tool use | ||
| Structured outputs | ||
| Code execution |
Benchmarks
| Benchmark | Claude Haiku 4.5 | DeepSeek V4 Pro |
|---|---|---|
| SWE-bench Verified | 73.3 | 80.6 |
Deep dive
On shared benchmark coverage, SWE-bench Verified has Claude Haiku 4.5 at 73.3 and DeepSeek V4 Pro at 80.6, with DeepSeek V4 Pro ahead by 7.3 points. The largest visible gap is 7.3 points on SWE-bench Verified, which matters most when that benchmark mirrors your workload. Treat isolated benchmark wins as directional, because provider routing, prompt style, and tool access can move real application results.
The capability footprint differs most on vision: Claude Haiku 4.5, multimodal input: Claude Haiku 4.5, reasoning mode: DeepSeek V4 Pro, and code execution: Claude Haiku 4.5. Both models share function calling, tool use, and structured outputs, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
Pricing coverage is uneven: Claude Haiku 4.5 has $0.8/1M input tokens and DeepSeek V4 Pro has no token price sourced yet. Provider availability is 8 tracked routes versus 0. Treat unknown pricing as an integration gap, then verify the route you will actually call before estimating production spend.
Choose Claude Haiku 4.5 when coding workflow support and broader provider choice are central to the workload. Choose DeepSeek V4 Pro when reasoning depth and larger context windows are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship.
FAQ
Which has a larger context window, Claude Haiku 4.5 or DeepSeek V4 Pro?
DeepSeek V4 Pro supports 1M tokens, while Claude Haiku 4.5 supports 200k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Is Claude Haiku 4.5 or DeepSeek V4 Pro open source?
Claude Haiku 4.5 is listed under Proprietary. DeepSeek V4 Pro is listed under MIT. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Claude Haiku 4.5 or DeepSeek V4 Pro?
Claude Haiku 4.5 has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for multimodal input, Claude Haiku 4.5 or DeepSeek V4 Pro?
Claude Haiku 4.5 has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Which is better for reasoning mode, Claude Haiku 4.5 or DeepSeek V4 Pro?
DeepSeek V4 Pro has the clearer documented reasoning mode signal in this comparison. If reasoning mode is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Claude Haiku 4.5 and DeepSeek V4 Pro?
Claude Haiku 4.5 is available on Microsoft Foundry, Anthropic, Snowflake Cortex, AWS Bedrock, and GCP Vertex AI. DeepSeek V4 Pro is available on the tracked providers still being sourced. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
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Last reviewed: 2026-04-24. Data sourced from public model cards and provider documentation.