GPT-4o vs Kimi K2.6
Benchmarks, API pricing and specs, head to head. Data updated 2026-06-10.
OpenAI · May 2024
The 2024 omni-modal classic with native audio in and out; superseded at the frontier but still everywhere in production.
Moonshot AI · Apr 2026
Moonshot's multimodal flagship that ties GPT-5.5 on several coding evaluations at a fraction of the price, with open weights.
The verdict
Kimi K2.6 wins 1 of the 1 benchmarks these models share, against 0 for GPT-4o. Kimi K2.6 is about 2.6x cheaper per blended million tokens (3:1 input:output mix). Kimi K2.6 also takes 262K of context versus 128K for GPT-4o. And Kimi K2.6 is open-weights (Modified MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
Benchmark head-to-head 0–1
Specs & pricing
| GPT-4o | Kimi K2.6 | |
|---|---|---|
| modhub Index | — | — |
| Input price / 1M | $2.5 | $0.95 |
| Output price / 1M | $10 | $4 |
| Context window | 128K | 262K |
| Max output | 16K | 262K |
| Open weights | no | yes (Modified MIT) |
| Reasoning model | no | yes |
| Multimodal input | text, image, audio | text, image |
| Knowledge cutoff | Oct 2023 | Feb 2026 |
| Released | May 2024 | Apr 2026 |
| Example monthly cost* | $40.00 | $15.50 |
* 10M input + 1.5M output tokens per month at list prices, no caching. Green = better value on that row.
Frequently asked questions
- Which is better, GPT-4o or Kimi K2.6?
- Kimi K2.6 wins 1 of the 1 benchmarks these models share, against 0 for GPT-4o. Kimi K2.6 is about 2.6x cheaper per blended million tokens (3:1 input:output mix). Kimi K2.6 also takes 262K of context versus 128K for GPT-4o. And Kimi K2.6 is open-weights (Modified MIT), so it can be self-hosted — a structural advantage if data control or vendor independence matters.
- Which is cheaper, GPT-4o or Kimi K2.6?
- GPT-4o costs $2.5/$10 per million input/output tokens, while Kimi K2.6 costs $0.95/$4. For a typical workload of 10M input and 1.5M output tokens per month, that's $40.00 versus $15.50.
- Which model is better for coding, GPT-4o or Kimi K2.6?
- On SWE-bench Verified — the standard agentic-coding benchmark — Kimi K2.6 scores ~82.5% versus 33.2% for GPT-4o, making Kimi K2.6 the stronger pick for coding agents.