API cost decision in 10 seconds

Hy3 (free) vs Grok Build 0.1

Pick Hy3 (free) when budget and context both matter.

Page updated: 2026-08-04T18:08:03Z Data confirmed: 2026-08-23T11:07:50Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Hy3 (free) when budget and context both matter.

On the standard 1M input plus 500K output workload, Hy3 (free) is estimated at $0 vs $2 for Grok Build 0.1, saving $2 (100% lower).

Cost-first pickHy3 (free)

Context-first pickHy3 (free)

Sample savings$2100%

10x traffic gap$20

Hy3 (free) is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $20. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Hy3 (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Hy3 (free)	Grok Build 0.1
Input-heavy / RAG	5M input + 500K output	Hy3 (free)	$0	$6
Balanced workload	1M input + 1M output	Hy3 (free)	$0	$3
Output-heavy chatbot	1M input + 5M output	Hy3 (free)	$0	$11

Cheaper input Hy3 (free) $0 vs $1 / 1M

Hy3 (free) is free for input tokens while Grok Build 0.1 costs $1 per 1M tokens.

Cheaper output Hy3 (free) $0 vs $2 / 1M

Hy3 (free) is free for output tokens while Grok Build 0.1 costs $2 per 1M tokens.

Larger context Hy3 (free) 262.14K vs 256K

Hy3 (free) has 6.14K more context (1.02x larger).

Sample workload Hy3 (free) $0 vs $2

Hy3 (free) is free for the standard workload while the other model is estimated at $2.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Hy3 (free) Calculating… Estimated API cost

Grok Build 0.1 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

Hy3 (free) has the lower input price; Hy3 (free) has the lower output price; Hy3 (free) offers the larger context window. For the 1M input plus 500K output sample, Hy3 (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for Hy3 (free) and $2 for Grok Build 0.1.

Best Fit

Choose Hy3 (free) when you care most about lower input-token price, lower output-token price, and larger context window.

Choose Grok Build 0.1 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, Hy3 (free) is estimated at $0 vs $2 for Grok Build 0.1, saving $2 (100% lower).
Hy3 (free) is free for the standard workload while the other model is estimated at $2.
Hy3 (free) is free for input tokens while Grok Build 0.1 costs $1 per 1M tokens.
Hy3 (free) is free for output tokens while Grok Build 0.1 costs $2 per 1M tokens.
Hy3 (free) has 6.14K more context (1.02x larger).

Head-to-Head Specs

Feature	Hy3 (free) (Tencent)	Grok Build 0.1 (SpaceXAI)
Input Price prompt tokens per 1M	$0	$1
Completion Price per 1M tokens	$0	$2
Sample Workload Cost 1M input + 500K output	$0	$2
Context Window	262.14K	256K
Release Date	2026-07-06	2026-05-20

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Hy3 (free)	On the standard 1M input plus 500K output workload, Hy3 (free) is estimated at $0 vs $2 for Grok Build 0.1, saving $2 (100% lower).
High-volume input processing	Hy3 (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Hy3 (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Hy3 (free)	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

No lower-cost same-provider swap is currently tracked for this pair.

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.
DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.

Popular competitors

DeepSeek V4 Flash 0731 · DeepSeek · #1
MiMo-V2.5 · Xiaomi · #2
Hy3 · Tencent · #3
Ox Alpha · stealth · #4

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

Open cheapest models

Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

Compare models within provider hubs before choosing a final API vendor.

Open provider hubs

Tencent catalog

Review all tracked Tencent models before deciding whether this matchup is the right shortlist.

Open Tencent models

SpaceXAI catalog

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

Open SpaceXAI models

Hy3 (free)

Hy3 is a 295B-parameter Mixture-of-Experts model from Tencent (21B active, 192 experts with top-8 routing) built for reasoning, agentic workflows, and real-world production use. It supports a configurable reasoning effort:...

Grok Build 0.1

Grok Build 0.1 is SpaceXAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...