ZMIME
Comparison · 3 models · Updated Oct 4, 2026

Mistral Medium 3 vs 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, Mistral Medium 3 53). The right pick depends on what you value most.

  1. Mistral AI

    Mistral Medium 3

    Released May 7, 2025

    53/100
    • ECI134.1
    • Price$0.40 / $2.00
    • Context131K
    Full specs Remove Mistral Medium 3

  2. 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

  3. 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
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, Mistral Medium 3 53/100), 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 · Mistral Medium 3 134.1
  • Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · Mistral Medium 3 $0.80 · 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 · Mistral Medium 3 131,072 tokens
  • Widest inputsClaude Haiku 4.5 and GPT-4.1 miniMistral Medium 3: Text, Images · Claude Haiku 4.5: Text, Images, PDFs · GPT-4.1 mini: Text, Images, PDFs
  • Self-hostingNo open weightsAll three are available only through APIs
How the score is built
MeasureWeightMistral Medium 3Claude Haiku 4.5GPT-4.1 mini
CapabilityCapabilities Index (ECI)50%586959
Price25%543657
Inputs & features15%508070
Context window10%243261
Overall100%53/10058/10060/100
02 — Side by side

Every spec in one table

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

Mistral Medium 3 vs Claude Haiku 4.5 vs GPT-4.1 mini specifications side by side
SpecificationMistral Medium 3Mistral AIClaude Haiku 4.5AnthropicGPT-4.1 miniOpenAI
Capability
Capabilities Index (ECI)134.1142.4 (best)135.0
ECI rank#117 of 148#90 of 148 (best)#115 of 148
GPQA DiamondGraduate-level science questions59.5%71.2% (best)65.9%
FrontierMath Tiers 1–3Research-level mathematics——6.7%
OTIS Mock AIME 2024–2025Competition mathematics32.2%66.7% (best)44.7%
SimpleQA VerifiedShort factual questions—13.2% (best)12.7%
Price per million tokens
Input$0.40 (best)$1.00$0.40 (best)
Output$2.00$5.00$1.60 (best)
Cached input—$0.10$0.10
Blended (3:1)$0.80$2.00$0.70 (best)
Long-context rateSame rateSame rateSame rate
Price sourceOfficial Mistral APIOfficial Anthropic APIOfficial OpenAI API
Limits
Context window131,072 tokens200,000 tokens1,047,576 tokens (best)
Max output131,072 tokens (best)64,000 tokens32,768 tokens
Inputs and features
TextYesYesYes
ImagesYesYesYes
PDFsNoYesYes
AudioNoNoNo
VideoNoNoNo
ReasoningNoYesNo
Tool callingYesYesYes
Structured outputNoYesYes
Availability
WeightsProprietaryProprietaryProprietary
API model IDmistral-medium-2505claude-haiku-4-5gpt-4.1-mini
API providers534 (best)24
ReleasedMay 7, 2025Oct 15, 2025Apr 14, 2025
Knowledge cutoffMay 2025Feb 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.

  • Mistral Medium 3$8.00
  • Claude Haiku 4.5$20.00
  • GPT-4.1 mini$7.20
04 — Questions

Which should you choose?

Which is better: Mistral Medium 3, 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, Mistral Medium 3 53/100), 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, Mistral Medium 3, 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). Mistral Medium 3 costs $0.40 input / $2.00 output per million tokens (official Mistral 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 $0.80 for Mistral Medium 3 (1.1× as much) and $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), GPT-4.1 mini 135.0 (#115 of 148) and Mistral Medium 3 134.1 (#117 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%, Mistral Medium 3 59.5%; OTIS Mock AIME 2024–2025 — Claude Haiku 4.5 66.7%, GPT-4.1 mini 44.7%, Mistral Medium 3 32.2%.

Which is better for coding?

There are no published SWE-bench Verified results for Mistral Medium 3, 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. All three 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 and 131,072 for Mistral Medium 3. Maximum output per response: Mistral Medium 3 up to 131,072, 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?

Mistral Medium 3 accepts text and images; Claude Haiku 4.5 accepts text, images and PDFs; GPT-4.1 mini accepts text, images and PDFs. Claude Haiku 4.5 handles the widest range of inputs.

Are any of these open source?

No. Mistral Medium 3, 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. Mistral Medium 3 came out May 7, 2025; GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: Mistral Medium 3 May 2025, 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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