GPT-5.6 Luna vs Qwen3.8 Flash
At a Glance
| Compare |  GPT-5.6 LunaOpenAI |  Qwen3.8 FlashQwen |
|---|---|---|
| Intelligence, Cost, and Efficiency | ||
| IntelligenceHigher is better · MM Intelligence v2.5 | #31 of 4652.7 score · 3/3 sources · complete | UnrankedNot in the 46-model eligible cohort |
| CostLower is better · Published-token output estimate | #6 of 44$0.026 per LiveBench case | #4 of 44$0.021 per LiveBench case |
| EfficiencyHigher is better · MM Efficiency v1.5 | #4 of 3864.8 score · 3/3 sources · complete | UnrankedNot in the 38-model eligible cohort |
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.20Openai ↗ · Sep 3, 2026 | $0.113Deepinfra ↗ · Sep 21, 2026 |
| Output priceFrom · USD / 1M tokens | $1.20Openai ↗ · Sep 3, 2026 | $0.382Deepinfra ↗ · Sep 21, 2026 |
| Context windowMaximum documented tokens | 1,050K | 1,000K |
| Model facts checked | Aug 28, 2026View model evidence → | Aug 29, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | GPT-5.6 Luna | Qwen3.8-Flash |
|---|---|---|
| LiveBench2026-06-25 · overall · leader | 77.0597% of row best · percent · gpt-5.6-luna-max · 21,799 output tokens / case | 79.12100% of row best · percent · qwen3.8-flash-next · 54,438 output tokens / case |
| ToneBench2026-09-11-10-task-4ef099199c9c · overall_score · unverified | 84.47100% of row best · points · GPT-5.6 Luna (ultra) · 17,605 output tokens / case | 83.2098% of row best · points · Qwen3.8 Flash · 24,187 output tokens / case |
| Overall ResultCounted from the protocol-matched rows above | 0 benchmark winsNo overall winner | 1 benchmark winNo overall winner |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | GPT-5.6 Luna | Qwen3.8-Flash |
|---|---|---|
| Developer | OpenAI | Qwen |
| Family | Gpt 5 6 | Qwen3 8 Flash |
| Model | GPT-5.6 Luna | Qwen3.8-Flash |
| Version | GPT-5.6 Luna | Qwen3.8-Flash |
| Lifecycle | active | active |
| Released | Unknown | Unknown |
| Knowledge cutoff | 2026-02-16 | Unknown |
| Input modalities | Text, Image | Text, Image, Video |
| Output modalities | Text | Text |
| Context window | 1,050K | 1,000K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Openai (Standard), Openrouter (Standard) | Alibaba Cloud Model Studio (Standard), Deepinfra (Standard), Openrouter (Standard), Together Ai (Standard) |
| Capabilities | chat, generation, reasoning, tools | agents, chat, computer-use, reasoning, structured_outputs, tools, vision |
GPT-5.6 Luna Capabilities
Qwen3.8 Flash Capabilities
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|---|---|---|---|
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GPT-5.6 LunaOpenAI | vs |  GLM-5.3Z.ai | cross-developer peerstext |
GPT-5.6 LunaOpenAI | vs |  Hy4 previewTencent | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | GPT-5.6 LunaOpenAI | cross-developer peersimage, text |
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Primary Evidence
Sources and Freshness
Questions
GPT-5.6 Luna vs Qwen3.8 Flash FAQs
Is GPT-5.6 Luna or Qwen3.8 Flash better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-5.6 Luna and Qwen3.8 Flash, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-5.6 Luna or Qwen3.8 Flash?+
GPT-5.6 Luna is $0.20 and Qwen3.8 Flash is $0.113 per million tokens, so Qwen3.8 Flash is cheaper on this metric. GPT-5.6 Luna is $1.20 and Qwen3.8 Flash is $0.382 per million tokens, so Qwen3.8 Flash is cheaper on this metric.
Which has a larger context window, GPT-5.6 Luna or Qwen3.8 Flash?+
GPT-5.6 Luna has the larger sourced context window. GPT-5.6 Luna supports 1,050K and Qwen3.8 Flash supports 1,000K.
Which performs better in benchmarks, GPT-5.6 Luna or Qwen3.8 Flash?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can GPT-5.6 Luna or Qwen3.8 Flash be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-5.6 Luna is not marked open weight; Qwen3.8 Flash is not marked open weight.
Can GPT-5.6 Luna and Qwen3.8 Flash understand images?+
GPT-5.6 Luna is documented with image input; Qwen3.8 Flash is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, GPT-5.6 Luna or Qwen3.8 Flash?+
Qwen3.8 Flash has the larger sourced maximum output: GPT-5.6 Luna supports 128K and Qwen3.8 Flash supports 131K output tokens.
Do GPT-5.6 Luna and Qwen3.8 Flash support reasoning and tool use?+
GPT-5.6 Luna: reasoning, tool calling, and image input. Qwen3.8 Flash: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, GPT-5.6 Luna or Qwen3.8 Flash?+
GPT-5.6 Luna has 2 sourced provider routes; Qwen3.8 Flash has 4, so Qwen3.8 Flash has broader tracked availability.
Which offers better value, GPT-5.6 Luna or Qwen3.8 Flash?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.