Grok Code Fast 1 vs Kimi K2.7-Code
Grok Code Fast 1 (2025) and Kimi K2.7-Code (2026) are agentic coding models from xAI and Moonshot AI. Grok Code Fast 1 ships a 262k-token context window, while Kimi K2.7-Code ships a 262k-token context window. On pricing, Grok Code Fast 1 costs $0.20/1M input tokens versus $0.95/1M for the alternative. This comparison covers specs, pricing, API access, capabilities, benchmarks, input and output token costs, and production fit for coding and agent workloads.
Grok Code Fast 1 is ~375% cheaper at $0.20/1M; pay for Kimi K2.7-Code only for coding workflow support.
Decision scorecard
Local evidence first| Signal | Grok Code Fast 1 | Kimi K2.7-Code |
|---|---|---|
| Best for | custom coding agents, code generation, and tool loops | custom coding agents, code generation, and tool loops |
| Decision fit | Coding, RAG, and Agents | Coding, RAG, and Agents |
| Context window | 262k | 262k |
| Cheapest output | $1.50/1M tokens | $4/1M tokens |
| Provider routes | 3 tracked | 1 tracked |
| Shared benchmarks | 0 shared | 0 shared |
Decision tradeoffs
- Grok Code Fast 1 has the lower cheapest tracked output price at $1.50/1M tokens.
- Grok Code Fast 1 has broader tracked provider coverage for fallback and procurement flexibility.
- Local decision data tags Grok Code Fast 1 for Coding, RAG, and Agents.
- Kimi K2.7-Code uniquely exposes Vision, Multimodal, and Reasoning in local model data.
- Local decision data tags Kimi K2.7-Code for Coding, RAG, and Agents.
Monthly cost at traffic
Estimate token spend from the cheapest tracked input and output route or tier on this page.
Grok Code Fast 1
$535
Cheapest tracked route/tier: OpenRouter
Kimi K2.7-Code
$1,760
Cheapest tracked route/tier: Moonshot AI Kimi
Estimated monthly gap: $1,225. Batch, cache, alternate speed tiers, and negotiated pricing are excluded from this local estimate.
Switch friction
- No overlapping tracked provider route is sourced for Grok Code Fast 1 and Kimi K2.7-Code; plan for SDK, billing, or endpoint changes.
- Kimi K2.7-Code is $2.50/1M tokens higher on cheapest tracked output pricing, so quality gains need to justify the spend.
- Kimi K2.7-Code adds Vision, Multimodal, and Reasoning in local capability data.
- No overlapping tracked provider route is sourced for Kimi K2.7-Code and Grok Code Fast 1; plan for SDK, billing, or endpoint changes.
- Grok Code Fast 1 is $2.50/1M tokens lower on cheapest tracked output pricing before cache, batch, or negotiated discounts.
- Check replacement coverage for Vision, Multimodal, and Reasoning before moving production traffic.
Specs
| Specification | ||
|---|---|---|
| Released | 2025-08-27 | 2026-06-12 |
| Context window | 262k | 262k |
| Parameters | 314B | 1T |
| Architecture | Mixture of Experts | Mixture of Experts |
| License | Proprietary | MITOSI-approved |
| Openness | Proprietary | Open source |
| Commercial use | Commercial use: conditional | Commercial use: permitted |
| Knowledge cutoff | - | - |
Pricing and availability
| Pricing attribute | Grok Code Fast 1 | Kimi K2.7-Code |
|---|---|---|
| Input price | $0.20/1M tokens | $0.95/1M tokens |
| Output price | $1.50/1M tokens | $4/1M tokens |
| Providers |
Capabilities
| Capability | Grok Code Fast 1 | Kimi K2.7-Code |
|---|---|---|
| Vision | No | Yes |
| Multimodal | No | Yes |
| Reasoning | No | Yes |
| Function calling | Yes | Yes |
| Tool use | Yes | Yes |
| Structured outputs | Yes | Yes |
| Code execution | No | No |
| IDE integration | No | No |
| Computer use | No | No |
| Parallel agents | No | No |
Benchmarks
No shared benchmark scores are currently available for this pair.
Deep dive
The capability footprint differs most on vision: Kimi K2.7-Code, multimodal input: Kimi K2.7-Code, and reasoning mode: Kimi K2.7-Code. Both models share function calling, tool use, and structured outputs, so the practical split is not just feature count. Use those differences to decide whether the page is about raw model quality, agentic coding support, multimodal ingestion, or predictable structured API behavior.
For cost, Grok Code Fast 1 lists $0.20/1M input and $1.50/1M output tokens on the cheapest tracked provider, while Kimi K2.7-Code lists $0.95/1M input and $4/1M output tokens on the cheapest tracked provider. A 70/30 input-output blend puts Grok Code Fast 1 lower by about $1.27 per million blended tokens. Availability is 3 providers versus 1, so concentration risk also matters.
Choose Grok Code Fast 1 when coding workflow support, lower input-token cost, and broader provider choice are central to the workload. Choose Kimi K2.7-Code when coding workflow support are more important. For production, rerun your own prompts through the exact provider, region, and tool stack you plan to ship. This keeps the decision grounded in measurable tradeoffs instead of brand-level assumptions.
FAQ
Which has a larger context window, Grok Code Fast 1 or Kimi K2.7-Code?
Grok Code Fast 1 supports 262k tokens, while Kimi K2.7-Code supports 262k tokens. That gap matters most for long documents, large codebases, retrieval-heavy agents, and conversations where earlier context must remain visible.
Which is cheaper, Grok Code Fast 1 or Kimi K2.7-Code?
Grok Code Fast 1 is cheaper on tracked token pricing. Grok Code Fast 1 costs $0.20/1M input and $1.50/1M output tokens. Kimi K2.7-Code costs $0.95/1M input and $4/1M output tokens. Provider discounts or batch pricing can still change the final bill.
Is Grok Code Fast 1 or Kimi K2.7-Code open source?
Grok Code Fast 1 is listed under Proprietary. Kimi K2.7-Code is listed under MIT. License labels affect whether you can self-host, redistribute weights, or rely only on hosted APIs, so confirm the upstream license before deployment.
Which is better for vision, Grok Code Fast 1 or Kimi K2.7-Code?
Kimi K2.7-Code has the clearer documented vision signal in this comparison. If vision is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ. Use this as a quick comparison signal, then confirm the provider-specific limits before committing to production.
Which is better for multimodal input, Grok Code Fast 1 or Kimi K2.7-Code?
Kimi K2.7-Code has the clearer documented multimodal input signal in this comparison. If multimodal input is mission-critical, validate it against the provider endpoint because model-level support and API-level exposure can differ.
Where can I run Grok Code Fast 1 and Kimi K2.7-Code?
Grok Code Fast 1 is available on OpenRouter, Microsoft Foundry, and xAI Console. Kimi K2.7-Code is available on Moonshot AI Kimi. Provider coverage can affect latency, region availability, compliance posture, and fallback options.
Continue comparing
Last reviewed: 2026-06-15. Data sourced from public model cards and provider documentation.