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Comparison · 2 models · Updated Oct 4, 2026

Claude Haiku 4.5 vs GPT-4.1 mini

Too close to call on our weighted score (GPT-4.1 mini 60, Claude Haiku 4.5 58). The right pick depends on what you value most.

  1. Anthropic

    Claude Haiku 4.5

    Released Oct 15, 2025

    58/100
    • ECI142.4
    • Price$1.00 / $5.00
    • Context200K
    Full specs Remove Claude Haiku 4.5

  2. OpenAI

    GPT-4.1 mini

    Released Apr 14, 2025

    60/100
    • ECI135.0
    • Price$0.40 / $1.60
    • Context1.05M
    Full specs Remove GPT-4.1 mini

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Too close to call

It is close. Our weighted score puts them within 2 points (GPT-4.1 mini 60/100, Claude Haiku 4.5 58/100), so choose by what matters most for your work: Claude Haiku 4.5 for raw capability, GPT-4.1 mini on price and GPT-4.1 mini for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityClaude Haiku 4.5Capabilities Index (ECI): Claude Haiku 4.5 142.4 · GPT-4.1 mini 135.0
  • Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · Claude Haiku 4.5 $2.00 per 1M tokens (3:1 blend)
  • Longest contextGPT-4.1 miniGPT-4.1 mini 1,047,576 · Claude Haiku 4.5 200,000 tokens
  • Widest inputsSame inputsClaude Haiku 4.5: Text, Images, PDFs · GPT-4.1 mini: Text, Images, PDFs
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightClaude Haiku 4.5GPT-4.1 mini
CapabilityCapabilities Index (ECI)50%6959
Price25%3657
Inputs & features15%8070
Context window10%3261
Overall100%58/10060/100
02 — Side by side

Every spec in one table

Highlighted cells lead their row. Dashes mean the data is not published.

Claude Haiku 4.5 vs GPT-4.1 mini specifications side by side
SpecificationClaude Haiku 4.5AnthropicGPT-4.1 miniOpenAI
Capability
Capabilities Index (ECI)142.4 (best)135.0
ECI rank#90 of 148 (best)#115 of 148
GPQA DiamondGraduate-level science questions71.2% (best)65.9%
FrontierMath Tiers 1–3Research-level mathematics—6.7%
OTIS Mock AIME 2024–2025Competition mathematics66.7% (best)44.7%
SimpleQA VerifiedShort factual questions13.2% (best)12.7%
Price per million tokens
Input$1.00$0.40 (best)
Output$5.00$1.60 (best)
Cached input$0.10$0.10
Blended (3:1)$2.00$0.70 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Anthropic APIOfficial OpenAI API
Limits
Context window200,000 tokens1,047,576 tokens (best)
Max output64,000 tokens (best)32,768 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesYes
AudioNoNo
VideoNoNo
ReasoningYesNo
Tool callingYesYes
Structured outputYesYes
Availability
WeightsProprietaryProprietary
API model IDclaude-haiku-4-5gpt-4.1-mini
API providers34 (best)24
ReleasedOct 15, 2025Apr 14, 2025
Knowledge cutoffFeb 28, 2025Apr 2024
03 — Cost

What would a month cost?

Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.

  • Claude Haiku 4.5$20.00
  • GPT-4.1 mini$7.20
04 — Questions

Which should you choose?

Which is better: Claude Haiku 4.5 or GPT-4.1 mini?

It is close. Our weighted score puts them within 2 points (GPT-4.1 mini 60/100, Claude Haiku 4.5 58/100), so choose by what matters most for your work: Claude Haiku 4.5 for raw capability, GPT-4.1 mini on price and GPT-4.1 mini for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Claude Haiku 4.5 or GPT-4.1 mini?

GPT-4.1 mini is cheaper at $0.40 input / $1.60 output per million tokens (official OpenAI API price). Claude Haiku 4.5 costs $1.00 input / $5.00 output per million tokens (official Anthropic API price). At a typical mix of three input tokens to one output token, that is $0.70 per million tokens for GPT-4.1 mini versus $2.00 for Claude Haiku 4.5 (2.9× as much).

Which scores higher on benchmarks?

Claude Haiku 4.5 scores higher on the Capabilities Index (ECI): Claude Haiku 4.5 142.4 (#90 of 148) and GPT-4.1 mini 135.0 (#115 of 148). Their confidence ranges do not overlap (139.5–144.3 vs 131.2–136.6), so the gap is a real one. On individual benchmarks: GPQA Diamond — Claude Haiku 4.5 71.2%, GPT-4.1 mini 65.9%; OTIS Mock AIME 2024–2025 — Claude Haiku 4.5 66.7%, GPT-4.1 mini 44.7%; SimpleQA Verified — Claude Haiku 4.5 13.2%, GPT-4.1 mini 12.7%.

Which is better for coding?

There are no published SWE-bench Verified results for Claude Haiku 4.5 and GPT-4.1 mini yet, so there is no like-for-like coding score. On overall capability, Claude Haiku 4.5 leads, which tends to carry over to coding, but test on your own codebase. Both support tool calling for agent workflows.

Which has the bigger context window?

GPT-4.1 mini has the largest context window at 1,047,576 tokens, against 200,000 for Claude Haiku 4.5. Maximum output per response: Claude Haiku 4.5 up to 64,000, GPT-4.1 mini up to 32,768 tokens.

Which can read images, PDFs, audio or video?

Claude Haiku 4.5 accepts text, images and PDFs; GPT-4.1 mini accepts text, images and PDFs. They handle the same number of input types.

Are any of these open source?

No. Claude Haiku 4.5 and GPT-4.1 mini are proprietary and only available through APIs and apps.

Which is newer?

Claude Haiku 4.5 is the newest, released Oct 15, 2025. GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: Claude Haiku 4.5 Feb 28, 2025, GPT-4.1 mini Apr 2024.

How do you decide the winner?

Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.

05 — Keep comparing

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