API cost decision in 10 seconds

NewAion 3.5 vs Ternary Bonsai 2 27B

Pick Ternary Bonsai 2 27B when budget is the priority.

Page updated: 2026-09-23T14:07:58Z Data confirmed: 2026-09-23T16:07:52Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Ternary Bonsai 2 27B when budget is the priority.

On the standard 1M input plus 500K output workload, Ternary Bonsai 2 27B is estimated at $0.33 vs $6 for Aion 3.5, saving $5.67 (94.6% lower).

Cost-first pickTernary Bonsai 2 27B

Context-first pickBoth models

Sample savings$5.6794.6%

10x traffic gap$56.75

The reported context window is tied, so cost and provider fit carry more weight. At 10x that traffic, the same price gap is about $56.75. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Ternary Bonsai 2 27B stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Aion 3.5	Ternary Bonsai 2 27B
Input-heavy / RAG	5M input + 500K output	Ternary Bonsai 2 27B	$18	$0.62
Balanced workload	1M input + 1M output	Ternary Bonsai 2 27B	$9	$0.57
Output-heavy chatbot	1M input + 5M output	Ternary Bonsai 2 27B	$33	$2.58

Cheaper input Ternary Bonsai 2 27B $3 vs $0.075 / 1M

Ternary Bonsai 2 27B is $2.92 cheaper per 1M input tokens (97.5% lower; 40x difference).

Cheaper output Ternary Bonsai 2 27B $6 vs $0.5 / 1M

Ternary Bonsai 2 27B is $5.5 cheaper per 1M output tokens (91.7% lower; 12x difference).

Larger context Tie 262.14K vs 262.14K

Both models report the same context window at 262.14K tokens.

Sample workload Ternary Bonsai 2 27B $6 vs $0.33

Ternary Bonsai 2 27B is $5.67 cheaper on the standard workload (94.6% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Aion 3.5 Calculating… Estimated API cost

Ternary Bonsai 2 27B 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

Ternary Bonsai 2 27B has the lower input price; Ternary Bonsai 2 27B has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Ternary Bonsai 2 27B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $6 for Aion 3.5 and $0.33 for Ternary Bonsai 2 27B.

Best Fit

Choose Aion 3.5 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Choose Ternary Bonsai 2 27B 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, Ternary Bonsai 2 27B is estimated at $0.33 vs $6 for Aion 3.5, saving $5.67 (94.6% lower).
Ternary Bonsai 2 27B is $5.67 cheaper on the standard workload (94.6% lower).
Ternary Bonsai 2 27B is $2.92 cheaper per 1M input tokens (97.5% lower; 40x difference).
Ternary Bonsai 2 27B is $5.5 cheaper per 1M output tokens (91.7% lower; 12x difference).
Both models report the same context window at 262.14K tokens.

Head-to-Head Specs

Feature	NewAion 3.5 (AionLabs)	Ternary Bonsai 2 27B (PrismML)
Input Price prompt tokens per 1M	$3	$0.075
Completion Price per 1M tokens	$6	$0.5
Sample Workload Cost 1M input + 500K output	$6	$0.33
Context Window	262.14K	262.14K
Release Date	2026-09-23	2026-09-18

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Ternary Bonsai 2 27B	On the standard 1M input plus 500K output workload, Ternary Bonsai 2 27B is estimated at $0.33 vs $6 for Aion 3.5, saving $5.67 (94.6% lower).
High-volume input processing	Ternary Bonsai 2 27B	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Ternary Bonsai 2 27B	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Tie	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Aion 3.5 Mini can replace Aion 3.5 when lower sample workload cost matters most: $1.4.
Aion-3.0-Mini can replace Aion 3.5 when lower sample workload cost matters most: $1.4.
Aion-1.0-Mini can replace Aion 3.5 when lower sample workload cost matters most: $1.4.
Aion-2.0 can replace Aion 3.5 when lower sample workload cost matters most: $1.6.

Larger context near this budget

Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
Grok 4.20 offers 2M context with $2.5 sample workload cost.
GLM 5.3 Flash offers 1.31M context with $0.4 sample workload cost.
DeepSeek V4 Flash 0731 offers 1.31M context with $0.36 sample workload cost.

Popular competitors

MiMo-V2.6-Pro · Xiaomi · #1
GLM 5.3 Flash · Z.ai · #2
DeepSeek V4.1 Flash · DeepSeek · #3
Hy4 preview · Tencent · #4

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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AionLabs catalog

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PrismML catalog

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

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Aion 3.5

Aion 3.5 is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It uses a collaborative generation process in which multiple specialized models each...

Ternary Bonsai 2 27B

Bonsai 2 27B is a 27B-parameter reasoning model from PrismML derived from Qwen3.8-27B. It supports coding, mathematics, tool calling, and image understanding with a 262K-token context window. Ternary compression shrinks...