API cost decision in 10 seconds

NewGrok 4.3 vs GPT-5.2

Pick Grok 4.3 when budget and context both matter.

Pricing data updated:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Grok 4.3 when budget and context both matter.

On the standard 1M input plus 500K output workload, Grok 4.3 is estimated at $2.5 vs $8.75 for GPT-5.2, saving $6.25 (71.4% lower).

Cost-first pickGrok 4.3
Context-first pickGrok 4.3
Sample savings$6.2571.4%
10x traffic gap$62.5

Grok 4.3 is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $62.5. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Grok 4.3 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGrok 4.3GPT-5.2
Input-heavy / RAG5M input + 500K outputGrok 4.3$7.5$15.75
Balanced workload1M input + 1M outputGrok 4.3$3.75$15.75
Output-heavy chatbot1M input + 5M outputGrok 4.3$13.75$71.75
Cheaper input Grok 4.3 $1.25 vs $1.75 / 1M

Grok 4.3 is $0.5 cheaper per 1M input tokens (28.6% lower; 1.4x difference).

Cheaper output Grok 4.3 $2.5 vs $14 / 1M

Grok 4.3 is $11.5 cheaper per 1M output tokens (82.1% lower; 5.6x difference).

Larger context Grok 4.3 1M vs 400K

Grok 4.3 has 600K more context (2.5x larger).

Sample workload Grok 4.3 $2.5 vs $8.75

Grok 4.3 is $6.25 cheaper on the standard workload (71.4% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Grok 4.3 Calculating… Estimated API cost
GPT-5.2 Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.

Quick Decision

Verdict

Grok 4.3 has the lower input price; Grok 4.3 has the lower output price; Grok 4.3 offers the larger context window. For the 1M input plus 500K output sample, Grok 4.3 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $2.5 for Grok 4.3 and $8.75 for GPT-5.2.

Best Fit

Choose Grok 4.3 when you care most about lower input-token price, lower output-token price, and larger context window.

Choose GPT-5.2 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Decision Notes
  • On the standard 1M input plus 500K output workload, Grok 4.3 is estimated at $2.5 vs $8.75 for GPT-5.2, saving $6.25 (71.4% lower).
  • Grok 4.3 is $6.25 cheaper on the standard workload (71.4% lower).
  • Grok 4.3 is $0.5 cheaper per 1M input tokens (28.6% lower; 1.4x difference).
  • Grok 4.3 is $11.5 cheaper per 1M output tokens (82.1% lower; 5.6x difference).
  • Grok 4.3 has 600K more context (2.5x larger).
Head-to-Head Specs
FeatureNewGrok 4.3
(xAI)		GPT-5.2
(OpenAI)
Input Price
prompt tokens per 1M		$1.25$1.75
Completion Price
per 1M tokens		$2.5$14
Sample Workload Cost
1M input + 500K output		$2.5$8.75
Context Window1M400K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGrok 4.3On the standard 1M input plus 500K output workload, Grok 4.3 is estimated at $2.5 vs $8.75 for GPT-5.2, saving $6.25 (71.4% lower).
High-volume input processingGrok 4.3Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGrok 4.3Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGrok 4.3A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Grok Build 0.1 can replace Grok 4.3 when lower sample workload cost matters most: $2.
  • gpt-oss-120b (free) can replace GPT-5.2 when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.2 when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.2 when lower sample workload cost matters most: $0.1.
Larger context near this budget
  • Llama 4 Scout offers 10M context with $0.23 sample workload cost.
  • Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
  • Grok 4.20 offers 2M context with $2.5 sample workload cost.
  • GPT-5.4 offers 1.05M context with $10 sample workload cost.
Popular competitors
  • No popular competitor is currently available.

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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xAI catalog

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OpenAI catalog

Check other OpenAI models with comparable pricing, context, or release timing.

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Grok 4.3

Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

GPT-5.2

GPT-5.2 is the latest frontier-grade model in the GPT-5 series, offering stronger agentic and long context perfomance compared to GPT-5.1. It uses adaptive reasoning to allocate computation dynamically, responding quickly...