API cost decision in 10 seconds

NewGLM 5.3 FlashX vs NewGPT Sol Latest

Pick GLM 5.3 FlashX for lower cost; pick GPT Sol Latest only if the larger context window matters more.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick GLM 5.3 FlashX for lower cost; pick GPT Sol Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, GLM 5.3 FlashX is estimated at $0.99 vs $7 for GPT Sol Latest, saving $6 (85.8% lower).

Cost-first pickGLM 5.3 FlashX
Context-first pickGPT Sol Latest
Sample savings$685.8%
10x traffic gap$60.05

GPT Sol Latest has more context, but GLM 5.3 FlashX saves $6 on the standard workload. At 10x that traffic, the same price gap is about $60.05. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

GLM 5.3 FlashX stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGLM 5.3 FlashXGPT Sol Latest
Input-heavy / RAG5M input + 500K outputGLM 5.3 FlashX$2.48$15
Balanced workload1M input + 1M outputGLM 5.3 FlashX$1.62$12
Output-heavy chatbot1M input + 5M outputGLM 5.3 FlashX$6.62$52
Cheaper input GLM 5.3 FlashX $0.37 vs $2 / 1M

GLM 5.3 FlashX is $1.63 cheaper per 1M input tokens (81.5% lower; 5.41x difference).

Cheaper output GLM 5.3 FlashX $1.25 vs $10 / 1M

GLM 5.3 FlashX is $8.75 cheaper per 1M output tokens (87.5% lower; 8x difference).

Larger context GPT Sol Latest 1.05M vs 1.05M

GPT Sol Latest has 1.42K more context (1x larger).

Sample workload GLM 5.3 FlashX $0.99 vs $7

GLM 5.3 FlashX is $6 cheaper on the standard workload (85.8% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
GLM 5.3 FlashX Calculating… Estimated API cost
GPT Sol Latest 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

GLM 5.3 FlashX has the lower input price; GLM 5.3 FlashX has the lower output price; GPT Sol Latest offers the larger context window. For the 1M input plus 500K output sample, GLM 5.3 FlashX is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.99 for GLM 5.3 FlashX and $7 for GPT Sol Latest.

Best Fit

Choose GLM 5.3 FlashX when you care most about lower input-token price, and lower output-token price.

Choose GPT Sol Latest when you care most about larger context window.

Decision Notes
  • On the standard 1M input plus 500K output workload, GLM 5.3 FlashX is estimated at $0.99 vs $7 for GPT Sol Latest, saving $6 (85.8% lower).
  • GLM 5.3 FlashX is $6 cheaper on the standard workload (85.8% lower).
  • GLM 5.3 FlashX is $1.63 cheaper per 1M input tokens (81.5% lower; 5.41x difference).
  • GLM 5.3 FlashX is $8.75 cheaper per 1M output tokens (87.5% lower; 8x difference).
  • GPT Sol Latest has 1.42K more context (1x larger).
Head-to-Head Specs
FeatureNewGLM 5.3 FlashX
(Z.ai)		NewGPT Sol Latest
(OpenAI)
Input Price
prompt tokens per 1M		$0.37$2
Completion Price
per 1M tokens		$1.25$10
Sample Workload Cost
1M input + 500K output		$0.99$7
Context Window1.05M1.05M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionGLM 5.3 FlashXOn the standard 1M input plus 500K output workload, GLM 5.3 FlashX is estimated at $0.99 vs $7 for GPT Sol Latest, saving $6 (85.8% lower).
High-volume input processingGLM 5.3 FlashXLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsGLM 5.3 FlashXLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT Sol LatestA larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • GLM 5.2 (free) can replace GLM 5.3 FlashX when lower sample workload cost matters most: $0.
  • GLM 4.5 Air (free) can replace GLM 5.3 FlashX when lower sample workload cost matters most: $0.
  • GLM 4 32B can replace GLM 5.3 FlashX when lower sample workload cost matters most: $0.15.
  • GLM Flash Latest can replace GLM 5.3 FlashX when lower sample workload cost matters most: $0.2.

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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Z.ai catalog

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OpenAI catalog

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GLM 5.3 FlashX

GLM-5.3-FlashX is the high-speed variant of Z.ai's GLM-5.3-Flash, a native multimodal model delivering inference speeds of up to 200 tokens/s. Built on the same hybrid sparse and linear attention architecture...

GPT Sol Latest

This model always redirects to the latest model in the GPT Sol family.