LLM Reference

Claude Haiku 4.5 vs GPT-4.1 Mini

Claude Haiku 4.5 (2025) and GPT-4.1 Mini (2025) are general-purpose language models from Anthropic and OpenAI. Claude Haiku 4.5 ships a 200k-token context window, while GPT-4.1 Mini ships a 1.05m-token context window. On SWE-bench Verified, Claude Haiku 4.5 leads by 49.7 pts. On pricing, GPT-4.1 Mini costs $0.40/1M 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.

GPT-4.1 Mini is ~100% cheaper at $0.40/1M; pay for Claude Haiku 4.5 only for coding workflow support.

Decision scorecard

Local evidence first
SignalClaude Haiku 4.5GPT-4.1 Mini
Best formultimodal apps, tool-calling agents, and provider-routed productionmultimodal apps, tool-calling agents, and long-context analysis
Decision fitCoding, RAG, and AgentsCoding, RAG, and Agents
Context window200k1.05m
Cheapest output$4/1M tokens$1.60/1M tokens
Provider routes9 tracked4 tracked
Shared benchmarksSWE-bench Verified leader2 shared

Decision tradeoffs

Choose Claude Haiku 4.5 when...
  • Claude Haiku 4.5 holds a shared-benchmark lead on SWE-bench Verified, ahead by 49.7 points.
  • Claude Haiku 4.5 has broader tracked provider coverage for fallback and route flexibility.
  • Local decision data tags Claude Haiku 4.5 for Coding, RAG, and Agents.
Choose GPT-4.1 Mini when...
  • GPT-4.1 Mini has the larger context window for long prompts, retrieval packs, or transcript analysis.
  • GPT-4.1 Mini has the lower cheapest tracked output price at $1.60/1M tokens.
  • Local decision data tags GPT-4.1 Mini 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 GPT-4.1 Mini

Claude Haiku 4.5

$1,640

Cheapest tracked route/tier: AWS Bedrock

GPT-4.1 Mini

$720

Cheapest tracked route/tier: OpenRouter

Estimated monthly gap: $920. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.

Switch friction

Claude Haiku 4.5 -> GPT-4.1 Mini
  • Provider overlap exists on OpenRouter, Replicate API, and Vercel AI Gateway; start route-level A/B tests there.
  • GPT-4.1 Mini is $2.40/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
GPT-4.1 Mini -> Claude Haiku 4.5
  • Provider overlap exists on OpenRouter, Replicate API, and Vercel AI Gateway; start route-level A/B tests there.
  • Claude Haiku 4.5 is $2.40/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.

Specs

Specification
Released2025-10-012025-04-01
Context window200k1.05m
Parameters——
ArchitectureDecoder OnlyDecoder Only
LicenseProprietaryProprietary
OpennessProprietaryProprietary
WeightsNot releasedNot released
CodeUnknownUnknown
Commercial useCommercial use: conditionalCommercial use: conditional
Knowledge cutoff2025-022025-01

Pricing and availability

Pricing attributeClaude Haiku 4.5GPT-4.1 Mini
Input price$0.80/1M tokens$0.40/1M tokens
Output price$4/1M tokens$1.60/1M tokens
Providers
Microsoft FoundryAnthropicSnowflake CortexAWS BedrockGCP Vertex AIOpenRouter
OpenRouterReplicate APIOpenAI APIVercel AI Gateway

Capabilities

CapabilityClaude Haiku 4.5GPT-4.1 Mini
VisionYesYes
MultimodalYesYes
ReasoningNoNo
JSON / Tool useYesYes
Structured outputsYesYes
Code executionYesYes
IDE integrationNoNo
Computer useNoNo
Parallel agentsNoNo

Benchmarks

BenchmarkClaude Haiku 4.5GPT-4.1 Mini
SWE-bench Verified73.323.6
BFCL68.750.5

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