ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Claude Haiku 4.5 vs Mistral Medium 3

Claude Haiku 4.5 comes out ahead, 58 to 53 on our weighted score, though Mistral Medium 3 is 2.5× cheaper per token.

  1. Our pick

    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. 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

  3. Add a model

    Make it a three-way comparison.

01 — Verdict

Claude Haiku 4.5 is our pick

Claude Haiku 4.5 is the better all-round choice, scoring 58/100 against Mistral Medium 3 (53). It leads on capability, inputs & features and context window. Mistral Medium 3 wins on price. 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 · Mistral Medium 3 134.1
  • Lowest priceMistral Medium 3Mistral Medium 3 $0.80 · Claude Haiku 4.5 $2.00 per 1M tokens (3:1 blend)
  • Longest contextClaude Haiku 4.5Claude Haiku 4.5 200,000 · Mistral Medium 3 131,072 tokens
  • Widest inputsClaude Haiku 4.5Claude Haiku 4.5: Text, Images, PDFs · Mistral Medium 3: Text, Images
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightClaude Haiku 4.5Mistral Medium 3
CapabilityCapabilities Index (ECI)50%6958
Price25%3654
Inputs & features15%8050
Context window10%3224
Overall100%58/10053/100
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 Mistral Medium 3 specifications side by side
SpecificationClaude Haiku 4.5AnthropicMistral Medium 3Mistral AI
Capability
Capabilities Index (ECI)142.4 (best)134.1
ECI rank#90 of 148 (best)#117 of 148
GPQA DiamondGraduate-level science questions71.2% (best)59.5%
OTIS Mock AIME 2024–2025Competition mathematics66.7% (best)32.2%
SimpleQA VerifiedShort factual questions13.2%—
Price per million tokens
Input$1.00$0.40 (best)
Output$5.00$2.00 (best)
Cached input$0.10—
Blended (3:1)$2.00$0.80 (best)
Long-context rateSame rateSame rate
Price sourceOfficial Anthropic APIOfficial Mistral API
Limits
Context window200,000 tokens (best)131,072 tokens
Max output64,000 tokens131,072 tokens (best)
Inputs and features
TextYesYes
ImagesYesYes
PDFsYesNo
AudioNoNo
VideoNoNo
ReasoningYesNo
Tool callingYesYes
Structured outputYesNo
Availability
WeightsProprietaryProprietary
API model IDclaude-haiku-4-5mistral-medium-2505
API providers34 (best)5
ReleasedOct 15, 2025May 7, 2025
Knowledge cutoffFeb 28, 2025May 2025
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
  • Mistral Medium 3$8.00
04 — Questions

Which should you choose?

Which is better: Claude Haiku 4.5 or Mistral Medium 3?

Claude Haiku 4.5 is the better all-round choice, scoring 58/100 against Mistral Medium 3 (53). It leads on capability, inputs & features and context window. Mistral Medium 3 wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Claude Haiku 4.5 or Mistral Medium 3?

Mistral Medium 3 is cheaper at $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 $0.80 per million tokens for Mistral Medium 3 versus $2.00 for Claude Haiku 4.5 (2.5× 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 Mistral Medium 3 134.1 (#117 of 148). Their confidence ranges do not overlap (139.5–144.3 vs 130.5–135.6), so the gap is a real one. On individual benchmarks: GPQA Diamond — Claude Haiku 4.5 71.2%, Mistral Medium 3 59.5%; OTIS Mock AIME 2024–2025 — Claude Haiku 4.5 66.7%, Mistral Medium 3 32.2%.

Which is better for coding?

There are no published SWE-bench Verified results for Claude Haiku 4.5 and Mistral Medium 3 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?

Claude Haiku 4.5 has the largest context window at 200,000 tokens, against 131,072 for Mistral Medium 3. Maximum output per response: Claude Haiku 4.5 up to 64,000, Mistral Medium 3 up to 131,072 tokens.

Which can read images, PDFs, audio or video?

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

Are any of these open source?

No. Claude Haiku 4.5 and Mistral Medium 3 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. Knowledge cutoff: Claude Haiku 4.5 Feb 28, 2025, Mistral Medium 3 May 2025.

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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