Grok Code Fast 1 vs GLM-4.6V-Flash
GLM-4.6V-Flash comes out ahead, 63 to 48 on our weighted score, and it is the cheaper option too.
xAIGrok Code Fast 1
48/100- ECI—
- Price$0.20 / $1.50
- Context256K
- Our pick
Z.ai (Zhipu)GLM-4.6V-Flash
63/100- ECI—
- Price$0.161 / $0.559
- Context128K
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Make it a three-way comparison.
GLM-4.6V-Flash is our pick
GLM-4.6V-Flash is the better all-round choice, scoring 63/100 against Grok Code Fast 1 (48). It leads on price and inputs & features. Grok Code Fast 1 wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceGLM-4.6V-FlashGLM-4.6V-Flash $0.261 · Grok Code Fast 1 $0.525 per 1M tokens (3:1 blend)
- Longest contextGrok Code Fast 1Grok Code Fast 1 256,000 · GLM-4.6V-Flash 128,000 tokens
- Widest inputsGLM-4.6V-FlashGrok Code Fast 1: Text · GLM-4.6V-Flash: Text, Images, Video
- Self-hostingGLM-4.6V-FlashPublishes downloadable weights
| Measure | Weight | Grok Code Fast 1 | GLM-4.6V-Flash |
|---|---|---|---|
| Price | 50% | 60 | 74 |
| Inputs & features | 30% | 35 | 70 |
| Context window | 20% | 36 | 24 |
| Overall | 100% | 48/100 | 63/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | Grok Code Fast 1xAI | GLM-4.6V-FlashZ.ai (Zhipu) |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.20 | $0.161 (best) |
| Output | $1.50 | $0.559 (best) |
| Cached input | — | — |
| Blended (3:1) | $0.525 | $0.261 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 5 providers | Median of 2 providers |
| Limits | ||
| Context window | 256,000 tokens (best) | 128,000 tokens |
| Max output | 10,000 tokens | 32,768 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | No | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Open |
| API model ID | — | glm-4.6v-flash |
| API providers | 7 (best) | 6 |
| Released | Sep 2, 2025 | Dec 8, 2025 |
| Knowledge cutoff | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Grok Code Fast 1$5.00
- GLM-4.6V-Flash$2.73
Which should you choose?
Which is better: Grok Code Fast 1 or GLM-4.6V-Flash?
GLM-4.6V-Flash is the better all-round choice, scoring 63/100 against Grok Code Fast 1 (48). It leads on price and inputs & features. Grok Code Fast 1 wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, Grok Code Fast 1 or GLM-4.6V-Flash?
GLM-4.6V-Flash is cheaper at $0.161 input / $0.559 output per million tokens (median across 2 API providers; free on Z.AI). Grok Code Fast 1 costs $0.20 input / $1.50 output per million tokens (median across 5 API providers). At a typical mix of three input tokens to one output token, that is $0.261 per million tokens for GLM-4.6V-Flash versus $0.525 for Grok Code Fast 1 (2× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Grok Code Fast 1 has not been scored yet and GLM-4.6V-Flash has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Grok Code Fast 1 and GLM-4.6V-Flash yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
Grok Code Fast 1 has the largest context window at 256,000 tokens, against 128,000 for GLM-4.6V-Flash. Maximum output per response: Grok Code Fast 1 up to 10,000, GLM-4.6V-Flash up to 32,768 tokens.
Which can read images, PDFs, audio or video?
Grok Code Fast 1 accepts text; GLM-4.6V-Flash accepts text, images and video. GLM-4.6V-Flash handles the widest range of inputs.
Are any of these open source?
GLM-4.6V-Flash publishes its weights and can be self-hosted; Grok Code Fast 1 is proprietary.
Which is newer?
GLM-4.6V-Flash is the newest, released Dec 8, 2025. Grok Code Fast 1 came out Sep 2, 2025.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Nov 2, 2026.
