ZMIME
Comparison · 2 models · Updated Oct 4, 2026

Mistral Medium 3 vs Claude Haiku 4.5

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. 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. 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

  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 4.5Mistral Medium 3: Text, Images · Claude Haiku 4.5: Text, Images, PDFs
  • Self-hostingNo open weightsBoth are available only through APIs
How the score is built
MeasureWeightMistral Medium 3Claude Haiku 4.5
CapabilityCapabilities Index (ECI)50%5869
Price25%5436
Inputs & features15%5080
Context window10%2432
Overall100%53/10058/100
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 specifications side by side
SpecificationMistral Medium 3Mistral AIClaude Haiku 4.5Anthropic
Capability
Capabilities Index (ECI)134.1142.4 (best)
ECI rank#117 of 148#90 of 148 (best)
GPQA DiamondGraduate-level science questions59.5%71.2% (best)
OTIS Mock AIME 2024–2025Competition mathematics32.2%66.7% (best)
SimpleQA VerifiedShort factual questions—13.2%
Price per million tokens
Input$0.40 (best)$1.00
Output$2.00 (best)$5.00
Cached input—$0.10
Blended (3:1)$0.80 (best)$2.00
Long-context rateSame rateSame rate
Price sourceOfficial Mistral APIOfficial Anthropic API
Limits
Context window131,072 tokens200,000 tokens (best)
Max output131,072 tokens (best)64,000 tokens
Inputs and features
TextYesYes
ImagesYesYes
PDFsNoYes
AudioNoNo
VideoNoNo
ReasoningNoYes
Tool callingYesYes
Structured outputNoYes
Availability
WeightsProprietaryProprietary
API model IDmistral-medium-2505claude-haiku-4-5
API providers534 (best)
ReleasedMay 7, 2025Oct 15, 2025
Knowledge cutoffMay 2025Feb 28, 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.

  • Mistral Medium 3$8.00
  • Claude Haiku 4.5$20.00
04 — Questions

Which should you choose?

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

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, Mistral Medium 3 or Claude Haiku 4.5?

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 Mistral Medium 3 and Claude Haiku 4.5 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: Mistral Medium 3 up to 131,072, Claude Haiku 4.5 up to 64,000 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. Claude Haiku 4.5 handles the widest range of inputs.

Are any of these open source?

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