LLM Reference

Claude Haiku 4.5 vs DeepSeek R1

Claude Haiku 4.5 (2025) and DeepSeek R1 (2025) are frontier reasoning models from Anthropic and DeepSeek. Claude Haiku 4.5 ships a 200k-token context window, while DeepSeek R1 ships a 128k-token context window. On SWE-bench Verified, Claude Haiku 4.5 leads by 24.1 pts. On pricing, DeepSeek R1 costs $0.10/1M input tokens versus $0.80/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.

DeepSeek R1 is ~700% cheaper at $0.10/1M; pay for Claude Haiku 4.5 only for coding workflow support.

Decision scorecard

Local evidence first
SignalClaude Haiku 4.5DeepSeek R1
Best formultimodal apps, tool-calling agents, and provider-routed productionreasoning-heavy apps and provider-routed production
Decision fitCoding, RAG, and AgentsCoding, RAG, and Agents
Context window200k128k
Cheapest output$4/1M tokens$0.30/1M tokens
Provider routes9 tracked14 tracked
Shared benchmarksSWE-bench Verified leader1 shared

Decision tradeoffs

Choose Claude Haiku 4.5 when...
  • Claude Haiku 4.5 holds a shared-benchmark lead on SWE-bench Verified, ahead by 24.1 points.
  • Claude Haiku 4.5 has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • Claude Haiku 4.5 uniquely exposes Vision, Multimodal, and JSON / Tool use in local model data.
  • Local decision data tags Claude Haiku 4.5 for Coding, RAG, and Agents.
Choose DeepSeek R1 when...
  • DeepSeek R1 has the lower cheapest tracked output price at $0.30/1M tokens.
  • DeepSeek R1 has broader tracked provider coverage for fallback and route flexibility.
  • DeepSeek R1 uniquely exposes Reasoning in local model data.
  • Local decision data tags DeepSeek R1 for Coding, RAG, and Agents.

Monthly cost at traffic

Estimate token spend from the cheapest tracked input and output route or tier on this page.

Lower estimate DeepSeek R1

Claude Haiku 4.5

$1,640

Cheapest tracked route/tier: AWS Bedrock

DeepSeek R1

$155

Cheapest tracked route/tier: Bitdeer AI

Estimated monthly gap: $1,485. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude Haiku 4.5 -> DeepSeek R1
  • Provider overlap exists on OpenRouter, Microsoft Foundry, and AWS Bedrock; start route-level A/B tests there.
  • DeepSeek R1 is $3.70/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
  • Check replacement coverage for Vision, Multimodal, and JSON / Tool use before moving production traffic.
  • DeepSeek R1 adds Reasoning in local capability data.
DeepSeek R1 -> Claude Haiku 4.5
  • Provider overlap exists on Microsoft Foundry, AWS Bedrock, and GCP Vertex AI; start route-level A/B tests there.
  • Claude Haiku 4.5 is $3.70/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
  • Check replacement coverage for Reasoning before moving production traffic.
  • Claude Haiku 4.5 adds Vision, Multimodal, and JSON / Tool use in local capability data.

Specs

Specification
Released2025-10-012025-01-20
Context window200k128k
Parameters—671B, 37B Active
ArchitectureDecoder OnlyDecoder Only
LicenseProprietaryMITOSI-approved
OpennessProprietaryOpen source
WeightsNot releasedAvailable
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: permitted
Knowledge cutoff2025-022023-12

Pricing and availability

Pricing attributeClaude Haiku 4.5DeepSeek R1
Input price$0.80/1M tokens$0.10/1M tokens
Output price$4/1M tokens$0.30/1M tokens
Providers
Microsoft FoundryAnthropicSnowflake CortexAWS BedrockGCP Vertex AIOpenRouter
DeepSeek PlatformOpenRouterTogether AIFireworks AINVIDIA NIMMicrosoft Foundry

Capabilities

CapabilityClaude Haiku 4.5DeepSeek R1
VisionYesNo
MultimodalYesNo
ReasoningNoYes
JSON / Tool useYesNo
Structured outputsYesYes
Code executionYesYes
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkClaude Haiku 4.5DeepSeek R1
SWE-bench Verified73.349.2

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Last reviewed: 2026-07-26. Data sourced from public model cards and provider documentation.