text model comparison
Gemini 3.8 Flash vs Hy4
Gemini 3.8 Flash and Hy4 are both current text models, from Google and Tencent. Gemini 3.8 Flash is 10% cheaper per 1M input tokens than Hy4, $0.75 vs $0.834.
- Lower price per 1M input tokens
- Gemini 3.8 Flash$0.75 against $0.834
- Newer release
- Hy4Nov 2026 against Sep 2026
Data verified November 5, 2026 · Dataset 2026-11-05
Side by side
Gemini 3.8 Flash and Hy4, line by line
Prices in effect today, compared at the same tier wherever both list one. The better value in each row is highlighted.
| Fact | Gemini 3.8 Flash | Hy4 |
|---|---|---|
| Price | ||
| Price per 1M input tokens | $0.75 (better) | $0.834 |
| Price per 1M output tokens | $3.75 | $2.501 (better) |
| Independent benchmarks | ||
| Arena Text | 1496 Elo (#7 of 52) | Not measured |
| Arena WebDev | 1583 Elo (#26 of 46) | Not measured |
| GPQA Diamond | 95.4% (#4 of 41) | Not measured |
| FrontierMath Tiers 1-3 (v2) | 68.4% (#26 of 41) | Not measured |
| SimpleQA Verified | 69.7% (#8 of 38) | Not measured |
| Specs | ||
| Provider | Tencent | |
| Release date | September 2, 2026 | November 4, 2026 |
| Access | API only | API only |
| Context window | 1,048,576 tokens | Not reported |
| Max output | 65,536 tokens | Not reported |
| Input | text, image, audio, video | text, image |
| Output | text | text |
No independent benchmark has scored both models yet. Each rank counts the current models scored on that benchmark.
Charts
Against every current text model
Where Gemini 3.8 Flash and Hy4 land among the current models of their task, on every independent benchmark, on price and on context.
Where each stands
Only Gemini 3.8 Flash has a current Arena Text score: #7 of 52. Each bar is the share of current models it beats.
Independent benchmarks
Arena Text
Gemini 3.8 Flash:#7of 52
1,496 Elo · ahead of 88%
Hy4: Not scored
Arena WebDev
Gemini 3.8 Flash:#26of 46
1,583 Elo · ahead of 44%
Hy4: Not scored
GPQA Diamond
Gemini 3.8 Flash:#4of 41
95.4% · ahead of 90%
Hy4: Not scored
FrontierMath Tiers 1-3 (v2)
Gemini 3.8 Flash:#26of 41
68.4% · ahead of 38%
Hy4: Not scored
SimpleQA Verified
Gemini 3.8 Flash:#8of 38
69.7% · ahead of 78%
Hy4: Not scored
Price and context
Price per 1M input tokens
Gemini 3.8 Flash:#20of 55
$0.75 · cheaper than 65%
Hy4:#21of 55
$0.834 · cheaper than 63%
Price per 1M output tokens
Gemini 3.8 Flash:#24of 55
$3.75 · cheaper than 57%
Hy4:#20of 55
$2.501 · cheaper than 65%
Context window
Gemini 3.8 Flash:#11of 64
1.05M tokens · longer than 67%
Hy4: Not listed
Quality against price
Gemini 3.8 Flash scores 1,496 at $1.50 (blended price per 1M tokens). The line joins the current models no other beats on both price and Arena Text score; hover any point to name it.
Quality against price: the data
| Model | Provider | Blended price per 1M tokens | Arena Text (Elo) |
|---|---|---|---|
| Gemini 4 Carbon | $4 | 1,528 | |
| Gemini 4 Argon | $4 | 1,520 | |
| Claude Opus 5.5 | Anthropic | $8 | 1,509 |
| Muse Wonder | Meta | $8 | 1,507 |
| Claude Fable 5 | Anthropic | $20 | 1,504 |
| Claude Fable 5.1 | Anthropic | $20 | 1,504 |
| Gemini 3.8 Flash | $1.50 | 1,496 | |
| Muse Spark 1.3 | Meta | $2 | 1,495 |
| Claude Opus 5 | Anthropic | $10 | 1,492 |
| Kimi K3 | Moonshot Kimi | $6 | 1,488 |
| GPT-5.6 Sol | OpenAI | $8 | 1,485 |
| Gemini 3.6 Flash | $3 | 1,483 | |
| GPT-5.5 | OpenAI | $11 | 1,482 |
| Claude Opus 4.8 | Anthropic | $10 | 1,482 |
| Qwen3.8-Max | Alibaba Qwen | $3 | 1,482 |
| GPT-6.1 Sol | OpenAI | $4 | 1,481 |
| GLM-5.3 | Z.ai | $2.15 | 1,481 |
| MiMo-V2.6-Pro | Xiaomi MiMo | $0.54 | 1,480 |
| Claude Sonnet 5.5 | Anthropic | $4 | 1,477 |
| GLM-5.3-Flash | Z.ai | $0.24 | 1,477 |
| GPT-6 Astra | OpenAI | $20 | 1,476 |
| DeepSeek-V4.1-Flash | DeepSeek | $0.52 | 1,476 |
| GPT-5.4 | OpenAI | $5.63 | 1,475 |
| Gemini 3 Flash Preview | $1.13 | 1,473 | |
| Grok 4.20 | xAI | $1.56 | 1,472 |
| GPT-5.6 Terra | OpenAI | $4.50 | 1,467 |
| Grok 4.5 | xAI | $3 | 1,465 |
| DeepSeek-V4-Pro | DeepSeek | $1.98 | 1,465 |
| Claude Sonnet 5 | Anthropic | $4 | 1,462 |
| GPT-6 Sol | OpenAI | $4 | 1,458 |
| Gemini 3.5 Flash-Lite | $0.85 | 1,456 | |
| Grok 4.6 | xAI | $3 | 1,455 |
| GPT-5.6 Luna | OpenAI | $0.45 | 1,453 |
| MiMo-V2.6-Flash | Xiaomi MiMo | $0.18 | 1,448 |
| Step 5 Preview | StepFun | $1.43 | 1,448 |
| Grok 4.3 | xAI | $1.56 | 1,442 |
| GPT-6 Luna | OpenAI | $0.20 | 1,441 |
| Grok 4.7 | xAI | $3 | 1,441 |
| Mistral Large 4 | Mistral AI | $1.05 | 1,432 |
| Claude Haiku 5.5 | Anthropic | $0.20 | 1,425 |
| GPT-4.1 | OpenAI | $3.50 | 1,415 |
| Solar Pro 4 | Upstage | $0.52 | 1,388 |
| GPT-4.1 mini | OpenAI | $0.70 | 1,383 |
| GPT-4.1 nano | OpenAI | $0.18 | 1,322 |
Cost
What each costs
Example workloads at each provider's listed rates, then every other rate either one lists. The cheaper figure in each row is highlighted.
The same work, priced
For 10M input and 2M output tokens, Gemini 3.8 Flash costs 1.1 times as much as Hy4, at each provider's listed rates.
10M input and 2M output tokens
Gemini 3.8 Flash costs 1.1× as much
- Gemini 3.8 Flash
- $15
- Hy4
- $13.34
The same, with 9M of the input tokens cached
Gemini 3.8 Flash costs 1.4× as much
- Gemini 3.8 Flash
- $8.93
- Hy4
- $6.21
| Workload or rate | Gemini 3.8 Flash | Hy4 |
|---|---|---|
| Example workloads | ||
| 10M input and 2M output tokens | $15 | $13.34 (better) |
| The same, with 9M of the input tokens cached | $8.93 | $6.21 (better) |
| The same, through the batch API | $7.50 | Not listed |
| Other listed rates | ||
| 1M input tokens, cached | $0.075 | $0.042 (better) |
| 1M input tokens, batch | $0.375 | Not listed |
| 1M output tokens, batch | $1.875 | Not listed |
| 1M input tokens, priority | $1.35 | Not listed |
| 1M output tokens, priority | $6.75 | Not listed |
Your own bill will differ. These figures use list prices and example workloads. The AI Model Cost Audit reviews your real usage, shortlists models that score as well for each task for less, and estimates the savings.
Launch price $100, regular price $150
Verdict
When to choose each
Gemini 3.8 Flash
Where it leads
- Lower price per 1M input tokens, $0.75 vs $0.834
- Accepts audio and video input
- Batch pricing, $0.375 input and $1.875 output per 1M tokens
Best for
- High-volume agentic and coding workloads where per-token cost dominates the decision
- Multimodal pipelines that need audio, video and PDF input in one model
Watch out for
- The listed price is promotional and ends 31 December 2026; on 1 January 2027 input and output both double, to $1.50 and $7.50, and cached input goes from $0.075 to $0.15
- Output pricing is billed inclusive of thinking tokens, so reasoning-heavy prompts cost more than the output length suggests
- Google’s published comparisons are against its own previous Flash release and were not independently reproduced here
Hy4
Where it leads
- Lower price per 1M output tokens, $2.501 vs $3.75
- Lower cost for 10M input and 2M output tokens, $13.34 vs $15
- Cheaper cached input, $0.042 vs $0.075 per 1M tokens
Best for
- Agents that work across terminals, desktop apps and browsers on a tight budget
- Finance and office work: research reports, spreadsheets and slides
Watch out for
- API only for now: Tencent says it will publish the weights and a system card later, and only Hy4 preview (August 2026, Apache 2.0) is open today
- In Tencent's own table it scores 44.4% on Terminal-Bench 4.0 against 66.8% for Kimi K3.1 Pro, and Tencent says a clear gap remains to top proprietary models on research-level math, long-horizon coding and hard visual questions
- Tencent publishes no context window or output limit for Hy4 (the preview card lists 1M tokens), and no independent benchmark score is recorded here yet
From benchmark to production
Building on Gemini 3.8 Flash or Hy4?
Public scores rarely hold on your own data. We test both models on your real tasks, then build the agent or pipeline around the one that wins.
AI Model Cost AuditLaunch price $100, regular price $150What the audit includes
FAQ
Gemini 3.8 Flash vs Hy4 FAQ
Which is cheaper, Gemini 3.8 Flash or Hy4?
Gemini 3.8 Flash is 10% cheaper per 1M input tokens than Hy4, $0.75 vs $0.834. For 10M input and 2M output tokens, Gemini 3.8 Flash costs $15 and Hy4 $13.34 at standard rates.
Which is cheaper with prompt caching, Gemini 3.8 Flash or Hy4?
Gemini 3.8 Flash charges $0.075 per 1M cached input tokens, 90% below its standard input rate, and Hy4 $0.042, 95% below. With 9M of 10M input tokens cached and 2M output tokens, Gemini 3.8 Flash costs $8.93 and Hy4 $6.21.
How do Gemini 3.8 Flash and Hy4 differ in features?
Gemini 3.8 Flash takes text, image, audio and video input; Hy4 takes text and image.
Further reading
More on Gemini 3.8 Flash and Hy4
Articles on Gemini 3.8 Flash and Hy4
- Gemini 3.8 Flash TTS: Price, Rankings and the Fine PrintSeptember 25, 2026
Related comparisons
- Claude Haiku 5.5 vs Gemini 3.8 Flash
- Claude Opus 5.5 vs Hy4
- Gemini 3.8 Flash vs Gemini 4 Argon
- DeepSeek-V4.1-Flash vs Hy4
- Gemini 3.8 Flash vs GPT-6.1 Sol
- GLM-5.3-Flash vs Hy4
- Claude Sonnet 5.5 vs Gemini 3.8 Flash
- GLM-5.3 vs Hy4
- Claude Opus 5.5 vs Gemini 3.8 Flash
- GPT-6.1 Sol vs Hy4
- DeepSeek-V4.1-Flash vs Gemini 3.8 Flash
- GPT-6.1 Terra vs Hy4
Production evaluation
Choosing between Gemini 3.8 Flash and Hy4?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty