ZMIME
Comparison · 3 models · Updated Oct 4, 2026

GPT-5.4 mini vs GPT-4.1 mini vs Grok 4.3

Grok 4.3 comes out ahead, 67 to 63 and 60 on our weighted score, though GPT-4.1 mini is 2.2× cheaper per token.

  1. OpenAI

    GPT-5.4 mini

    Released Mar 17, 2026

    63/100
    • ECI148.8
    • Price$0.75 / $4.50
    • Context400K
    Full specs Remove GPT-5.4 mini

  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. Our pick

    xAI

    Grok 4.3

    Released Apr 17, 2026

    67/100
    • ECI149.2
    • Price$1.25 / $2.50
    • Context1M
    Full specs Remove Grok 4.3
01 — Verdict

Grok 4.3 is our pick

Grok 4.3 is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63) and GPT-4.1 mini (60). It leads on inputs & features. GPT-4.1 mini wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

  • CapabilityGrok 4.3Capabilities Index (ECI): Grok 4.3 149.2 · GPT-5.4 mini 148.8 · GPT-4.1 mini 135.0
  • Lowest priceGPT-4.1 miniGPT-4.1 mini $0.70 · Grok 4.3 $1.56 · GPT-5.4 mini $1.69 per 1M tokens (3:1 blend)
  • Longest contextGPT-4.1 miniGPT-4.1 mini 1,047,576 · Grok 4.3 1,000,000 · GPT-5.4 mini 400,000 tokens
  • Widest inputsGPT-4.1 mini and Grok 4.3GPT-5.4 mini: Text, Images · GPT-4.1 mini: Text, Images, PDFs · Grok 4.3: Text, Images, PDFs
  • Self-hostingNo open weightsAll three are available only through APIs
How the score is built
MeasureWeightGPT-5.4 miniGPT-4.1 miniGrok 4.3
CapabilityCapabilities Index (ECI)50%775977
Price25%395741
Inputs & features15%707080
Context window10%446160
Overall100%63/10060/10067/100
02 — Side by side

Every spec in one table

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

GPT-5.4 mini vs GPT-4.1 mini vs Grok 4.3 specifications side by side
SpecificationGPT-5.4 miniOpenAIGPT-4.1 miniOpenAIGrok 4.3xAI
Capability
Capabilities Index (ECI)148.8135.0149.2 (best)
ECI rank#56 of 148#115 of 148#55 of 148 (best)
GPQA DiamondGraduate-level science questions86.9%65.9%88.8% (best)
FrontierMath Tiers 1–3Research-level mathematics51.2% (best)6.7%42.8%
OTIS Mock AIME 2024–2025Competition mathematics88.9%44.7%93.3% (best)
SimpleQA VerifiedShort factual questions29.4%12.7%33.2% (best)
Price per million tokens
Input$0.75$0.40 (best)$1.25
Output$4.50$1.60 (best)$2.50
Cached input$0.075 (best)$0.10$0.20
Blended (3:1)$1.69$0.70 (best)$1.56
Long-context rateSame rateSame rateOver 200K: $2.50 / $5.00
Price sourceOfficial OpenAI APIOfficial OpenAI APIOfficial xAI API
Limits
Context window400,000 tokens1,047,576 tokens (best)1,000,000 tokens
Max output128,000 tokens (best)32,768 tokens30,000 tokens
Inputs and features
TextYesYesYes
ImagesYesYesYes
PDFsNoYesYes
AudioNoNoNo
VideoNoNoNo
ReasoningYeslow · medium · high · xhighNoYeslow · medium · high
Tool callingYesYesYes
Structured outputYesYesYes
Availability
WeightsProprietaryProprietaryProprietary
API model IDgpt-5.4-minigpt-4.1-minigrok-4.3
API providers29 (best)2427
ReleasedMar 17, 2026Apr 14, 2025Apr 17, 2026
Knowledge cutoffAug 31, 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.

  • GPT-5.4 mini$16.50
  • GPT-4.1 mini$7.20
  • Grok 4.3$17.50
04 — Questions

Which should you choose?

Which is better: GPT-5.4 mini, GPT-4.1 mini or Grok 4.3?

Grok 4.3 is the better all-round choice, scoring 67/100 against GPT-5.4 mini (63) and GPT-4.1 mini (60). It leads on inputs & features. GPT-4.1 mini wins on price. The score weighs capability 50%, price 25%, inputs & features 15%, context window 10%.

Which is cheaper, GPT-5.4 mini, GPT-4.1 mini or Grok 4.3?

GPT-4.1 mini is cheaper at $0.40 input / $1.60 output per million tokens (official OpenAI API price). Grok 4.3 costs $1.25 input / $2.50 output per million tokens (official xAI API price); GPT-5.4 mini costs $0.75 input / $4.50 output per million tokens (official OpenAI 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 $1.56 for Grok 4.3 (2.2× as much) and $1.69 for GPT-5.4 mini (2.4× as much).

Which scores higher on benchmarks?

Grok 4.3 scores higher on the Capabilities Index (ECI): Grok 4.3 149.2 (#55 of 148), GPT-5.4 mini 148.8 (#56 of 148) and GPT-4.1 mini 135.0 (#115 of 148). The confidence ranges of the top two overlap (147.6–150.8 vs 147.1–150.5), so treat the gap as small. On individual benchmarks: GPQA Diamond — Grok 4.3 88.8%, GPT-5.4 mini 86.9%, GPT-4.1 mini 65.9%; FrontierMath Tiers 1–3 — GPT-5.4 mini 51.2%, Grok 4.3 42.8%, GPT-4.1 mini 6.7%; OTIS Mock AIME 2024–2025 — Grok 4.3 93.3%, GPT-5.4 mini 88.9%, GPT-4.1 mini 44.7%; SimpleQA Verified — Grok 4.3 33.2%, GPT-5.4 mini 29.4%, GPT-4.1 mini 12.7%.

Which is better for coding?

There are no published SWE-bench Verified results for GPT-5.4 mini, GPT-4.1 mini and Grok 4.3 yet, so there is no like-for-like coding score. On overall capability, Grok 4.3 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 1,000,000 for Grok 4.3 and 400,000 for GPT-5.4 mini. Maximum output per response: GPT-5.4 mini up to 128,000, GPT-4.1 mini up to 32,768, Grok 4.3 up to 30,000 tokens.

Which can read images, PDFs, audio or video?

GPT-5.4 mini accepts text and images; GPT-4.1 mini accepts text, images and PDFs; Grok 4.3 accepts text, images and PDFs. GPT-4.1 mini handles the widest range of inputs.

Are any of these open source?

No. GPT-5.4 mini, GPT-4.1 mini and Grok 4.3 are proprietary and only available through APIs and apps.

Which is newer?

Grok 4.3 is the newest, released Apr 17, 2026. GPT-5.4 mini came out Mar 17, 2026; GPT-4.1 mini came out Apr 14, 2025. Knowledge cutoff: GPT-5.4 mini Aug 31, 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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