API cost decision in 10 seconds

GPT-5.5 vs Palmyra X5

Pick Palmyra X5 for lower cost; pick GPT-5.5 only if the larger context window matters more.

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

Budget verdict

Pick Palmyra X5 for lower cost; pick GPT-5.5 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Palmyra X5 is estimated at $3.6 vs $20 for GPT-5.5, saving $16.4 (82% lower).

Cost-first pickPalmyra X5
Context-first pickGPT-5.5
Sample savings$16.482%
10x traffic gap$164

GPT-5.5 has more context, but Palmyra X5 saves $16.4 on the standard workload. At 10x that traffic, the same price gap is about $164. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Palmyra X5 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGPT-5.5Palmyra X5
Input-heavy / RAG5M input + 500K outputPalmyra X5$40$6
Balanced workload1M input + 1M outputPalmyra X5$35$6.6
Output-heavy chatbot1M input + 5M outputPalmyra X5$155$30.6
Cheaper input Palmyra X5 $5 vs $0.6 / 1M

Palmyra X5 is $4.4 cheaper per 1M input tokens (88% lower; 8.33x difference).

Cheaper output Palmyra X5 $30 vs $6 / 1M

Palmyra X5 is $24 cheaper per 1M output tokens (80% lower; 5x difference).

Larger context GPT-5.5 1.05M vs 1.04M

GPT-5.5 has 10K more context (1.01x larger).

Sample workload Palmyra X5 $20 vs $3.6

Palmyra X5 is $16.4 cheaper on the standard workload (82% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
GPT-5.5 Calculating… Estimated API cost
Palmyra X5 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

Palmyra X5 has the lower input price; Palmyra X5 has the lower output price; GPT-5.5 offers the larger context window. For the 1M input plus 500K output sample, Palmyra X5 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $20 for GPT-5.5 and $3.6 for Palmyra X5.

Best Fit

Choose GPT-5.5 when you care most about larger context window.

Choose Palmyra X5 when you care most about lower input-token price, and lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, Palmyra X5 is estimated at $3.6 vs $20 for GPT-5.5, saving $16.4 (82% lower).
  • Palmyra X5 is $16.4 cheaper on the standard workload (82% lower).
  • Palmyra X5 is $4.4 cheaper per 1M input tokens (88% lower; 8.33x difference).
  • Palmyra X5 is $24 cheaper per 1M output tokens (80% lower; 5x difference).
  • GPT-5.5 has 10K more context (1.01x larger).
Head-to-Head Specs
FeatureGPT-5.5
(OpenAI)		Palmyra X5
(Writer)
Input Price
prompt tokens per 1M		$5$0.6
Completion Price
per 1M tokens		$30$6
Sample Workload Cost
1M input + 500K output		$20$3.6
Context Window1.05M1.04M
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionPalmyra X5On the standard 1M input plus 500K output workload, Palmyra X5 is estimated at $3.6 vs $20 for GPT-5.5, saving $16.4 (82% lower).
High-volume input processingPalmyra X5Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsPalmyra X5Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.5A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • gpt-oss-120b (free) can replace GPT-5.5 when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.5 when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.5 when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace GPT-5.5 when lower sample workload cost matters most: $0.13.
Larger context near this budget
Popular competitors
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Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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OpenAI catalog

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Writer catalog

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GPT-5.5

GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...

Palmyra X5

Palmyra X5 is Writer's most advanced model, purpose-built for building and scaling AI agents across the enterprise. It delivers industry-leading speed and efficiency on context windows up to 1 million...