ZMIME
Comparison · 3 models · Updated Oct 4, 2026

Claude Sonnet 3.7 vs Mistral Medium 3 vs GPT-4.1

Too close to call on our weighted score (GPT-4.1 53, Mistral Medium 3 53, Claude Sonnet 3.7 50). The right pick depends on what you value most.

  1. Anthropic

    Claude Sonnet 3.7

    Released Feb 19, 2025

    50/100
    • ECI141.2
    • Price$3.00 / $15.00
    • Context200K
    Full specs Remove Claude Sonnet 3.7

  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. OpenAI

    GPT-4.1

    Released Apr 14, 2025

    53/100
    • ECI136.8
    • Price$2.00 / $8.00
    • Context1.05M
    Full specs Remove GPT-4.1
01 — Verdict

Too close to call

It is close. Our weighted score puts them within a point (GPT-4.1 53/100, Mistral Medium 3 53/100, Claude Sonnet 3.7 50/100), so choose by what matters most for your work: Claude Sonnet 3.7 for raw capability, Mistral Medium 3 on price and GPT-4.1 for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityClaude Sonnet 3.7Capabilities Index (ECI): Claude Sonnet 3.7 141.2 · GPT-4.1 136.8 · Mistral Medium 3 134.1
  • Lowest priceMistral Medium 3Mistral Medium 3 $0.80 · GPT-4.1 $3.50 · Claude Sonnet 3.7 $6.00 per 1M tokens (3:1 blend)
  • Longest contextGPT-4.1GPT-4.1 1,047,576 · Claude Sonnet 3.7 200,000 · Mistral Medium 3 131,072 tokens
  • Widest inputsClaude Sonnet 3.7 and GPT-4.1Claude Sonnet 3.7: Text, Images, PDFs · Mistral Medium 3: Text, Images · GPT-4.1: Text, Images, PDFs
  • Self-hostingNo open weightsAll three are available only through APIs
How the score is built
MeasureWeightClaude Sonnet 3.7Mistral Medium 3GPT-4.1
CapabilityCapabilities Index (ECI)50%675861
Price25%135424
Inputs & features15%705070
Context window10%322461
Overall100%50/10053/10053/100
02 — Side by side

Every spec in one table

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

Claude Sonnet 3.7 vs Mistral Medium 3 vs GPT-4.1 specifications side by side
SpecificationClaude Sonnet 3.7AnthropicMistral Medium 3Mistral AIGPT-4.1OpenAI
Capability
Capabilities Index (ECI)141.2 (best)134.1136.8
ECI rank#96 of 148 (best)#117 of 148#111 of 148
GPQA DiamondGraduate-level science questions79.7% (best)59.5%66.9%
FrontierMath Tiers 1–3Research-level mathematics——6.0%
OTIS Mock AIME 2024–2025Competition mathematics57.8% (best)32.2%38.3%
SWE-bench VerifiedFixing real GitHub issues61.0% (best)—48.5%
SimpleQA VerifiedShort factual questions——31.1%
Price per million tokens
Input$3.00$0.40 (best)$2.00
Output$15.00$2.00 (best)$8.00
Cached input——$0.50
Blended (3:1)$6.00$0.80 (best)$3.50
Long-context rateSame rateSame rateSame rate
Price sourceMedian of 3 providersOfficial Mistral APIOfficial OpenAI API
Limits
Context window200,000 tokens131,072 tokens1,047,576 tokens (best)
Max output64,000 tokens131,072 tokens (best)32,768 tokens
Inputs and features
TextYesYesYes
ImagesYesYesYes
PDFsYesNoYes
AudioNoNoNo
VideoNoNoNo
ReasoningYesNoNo
Tool callingYesYesYes
Structured outputNoNoYes
Availability
WeightsProprietaryProprietaryProprietary
API model ID—mistral-medium-2505gpt-4.1
API providers3525 (best)
ReleasedFeb 19, 2025May 7, 2025Apr 14, 2025
Knowledge cutoffOct 31, 2024May 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 Sonnet 3.7$60.00
  • Mistral Medium 3$8.00
  • GPT-4.1$36.00
04 — Questions

Which should you choose?

Which is better: Claude Sonnet 3.7, Mistral Medium 3 or GPT-4.1?

It is close. Our weighted score puts them within a point (GPT-4.1 53/100, Mistral Medium 3 53/100, Claude Sonnet 3.7 50/100), so choose by what matters most for your work: Claude Sonnet 3.7 for raw capability, Mistral Medium 3 on price and GPT-4.1 for long inputs. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, Claude Sonnet 3.7, Mistral Medium 3 or GPT-4.1?

Mistral Medium 3 is cheaper at $0.40 input / $2.00 output per million tokens (official Mistral API price). GPT-4.1 costs $2.00 input / $8.00 output per million tokens (official OpenAI API price); Claude Sonnet 3.7 costs $3.00 input / $15.00 output per million tokens (median across 3 API providers). At a typical mix of three input tokens to one output token, that is $0.80 per million tokens for Mistral Medium 3 versus $3.50 for GPT-4.1 (4.4× as much) and $6.00 for Claude Sonnet 3.7 (7.5× as much).

Which scores higher on benchmarks?

Claude Sonnet 3.7 scores higher on the Capabilities Index (ECI): Claude Sonnet 3.7 141.2 (#96 of 148), GPT-4.1 136.8 (#111 of 148) and Mistral Medium 3 134.1 (#117 of 148). Their confidence ranges do not overlap (138.7–142.9 vs 133.6–138.4), so the gap is a real one. On individual benchmarks: GPQA Diamond — Claude Sonnet 3.7 79.7%, GPT-4.1 66.9%, Mistral Medium 3 59.5%; OTIS Mock AIME 2024–2025 — Claude Sonnet 3.7 57.8%, GPT-4.1 38.3%, Mistral Medium 3 32.2%.

Which is better for coding?

There are no published SWE-bench Verified results for Mistral Medium 3 yet, so there is no like-for-like coding score. On overall capability, Claude Sonnet 3.7 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 has the largest context window at 1,047,576 tokens, against 200,000 for Claude Sonnet 3.7 and 131,072 for Mistral Medium 3. Maximum output per response: Claude Sonnet 3.7 up to 64,000, Mistral Medium 3 up to 131,072, GPT-4.1 up to 32,768 tokens.

Which can read images, PDFs, audio or video?

Claude Sonnet 3.7 accepts text, images and PDFs; Mistral Medium 3 accepts text and images; GPT-4.1 accepts text, images and PDFs. Claude Sonnet 3.7 handles the widest range of inputs.

Are any of these open source?

No. Claude Sonnet 3.7, Mistral Medium 3 and GPT-4.1 are proprietary and only available through APIs and apps.

Which is newer?

Mistral Medium 3 is the newest, released May 7, 2025. GPT-4.1 came out Apr 14, 2025; Claude Sonnet 3.7 came out Feb 19, 2025. Knowledge cutoff: Claude Sonnet 3.7 Oct 31, 2024, Mistral Medium 3 May 2025, GPT-4.1 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

Related comparisons