GPT 5.6 Luna vs Qwen 3.8 27B
Pick a route and service tier under each model. Prices, the calculator and the verdicts follow your choice.
At a glance
Generated from the rows below
Choose GPT 5.6 Luna for
- The highest Epoch Capabilities Index (156.8)
- The largest context window: 1,050,000 tokens
Choose Qwen 3.8 27B for
- The lowest cost per typical request ($0.0006)
- The only one that takes video
- The longest output: 131,072 tokens
Overview
Pricing
Prices on the route and tier chosen under each model
What will it cost?
Estimate a month of requests on the route and tier chosen for each model
Uses the route and tier chosen under each model, over 30 days. Cached input is billed at the cache-read rate.
Performance
Live gateway traffic
Activity
Tokens sent through Phaseo each day over the last 30 days
None of these models has had traffic through Phaseo in the last 30 days.
Features
Features from the parameters Phaseo routes support
Benchmarks
Only results that two or more of the selected models report get a row
Epoch Capabilities Index Independent
Higher is better · dot is the estimate, band is the 95% confidence interval · Epoch AI, CC BY 4.0
Artificial Analysis Intelligence Index Independent
Higher is better · at Extra high effort · 2 of 2 models tested
Where they rank
The five leaders on each capability index, then the compared models. Each model at its best-scoring setting.
Artificial Analysis Intelligence Index50 models ranked
- #1Claude Opus 5.559.1
- #2GPT-6 Astra56.9
- #3GPT-6.1 Sol54.6
- #4Claude Sonnet 5.554.5
- #5GPT-6.1 Terra51.3
- #31GPT 5.6 Luna23.8
- #33Qwen 3.8 27B20.1
Artificial Analysis Coding Index171 models ranked
- #1Claude Fable 5.181.6
- #2GPT 5.6 Sol78.3
- #3Claude Opus 578.0
- #4GPT-6 Astra77.1
- #5Grok 4.676.8
- #24GPT 5.6 Luna71.4
- #33Qwen 3.8 27B68.1
Artificial Analysis Agentic Index112 models ranked
- #1Claude Fable 5.157.9
- #2Claude Opus 556.5
- #3Qwen 3.8 Max 090256.0
- #4Muse Spark 1.355.5
- #5Qwen 3.8 Flash Next53.6
- #16Qwen 3.8 27B45.8
- #20GPT 5.6 Luna42.1
Epoch Capabilities Index164 models ranked
- #1GPT-6 Astra169.1
- #2Claude Opus 5.5168.4
- #3GPT-6.1 Terra168.1
- #4GPT-6.1 Sol167.8
- #5Claude Sonnet 5.5166.7
- #29GPT 5.6 Luna156.7
- #53Qwen 3.8 27B151.8
Lab-reported results come from each lab’s own launch materials and may use different settings, so none is marked best. Independent results come from third-party evaluators.
Providers
Where each model runs on Phaseo, with standard-tier prices per 1M tokens. Providers that serve more of these models come first.
To price the whole page on one of these providers, pick it under the model’s name at the top.
Details
GPT 5.6 Luna vs Qwen 3.8 27B: side-by-side summary
GPT 5.6 Luna and Qwen 3.8 27B are both available through the Phaseo API, so switching between them is a change of model id rather than a new integration.
GPT 5.6 Luna is from OpenAI. It has a 1,050,000-token context window. On its cheapest route it costs $0.20 per 1M input tokens and $1.20 per 1M output tokens.
Qwen 3.8 27B is from Qwen. It has a 262,144-token context window. On its cheapest route it costs $0.17 per 1M input tokens and $0.50 per 1M output tokens.
GPT 5.6 Luna model details, providers and pricingQwen 3.8 27B model details, providers and pricing
GPT 5.6 Luna vs Qwen 3.8 27B at a glance
| Attribute | GPT 5.6 Luna | Qwen 3.8 27B |
|---|---|---|
| Lab | OpenAI | Qwen |
| Input price per 1M tokens | $0.20 | $0.17 |
| Output price per 1M tokens | $1.20 | $0.50 |
| Context window | 1,050,000 tokens | 262,144 tokens |
| Max output | 128,000 tokens | 131,072 tokens |
| Artificial Analysis Intelligence Index | 23.8 (#31) | 20.1 (#33) |
Prices are each model's cheapest standard route on Phaseo. Benchmark ranks use each model's best-scoring evaluated setting.
Frequently asked questions
Which is cheaper, GPT 5.6 Luna or Qwen 3.8 27B?
Qwen 3.8 27B is cheaper for both input and output tokens. GPT 5.6 Luna costs $0.20 per 1M input tokens and $1.20 per 1M output tokens; Qwen 3.8 27B costs $0.17 and $0.50, each on its cheapest standard route on Phaseo.
Which has the longer context window, GPT 5.6 Luna or Qwen 3.8 27B?
GPT 5.6 Luna has the longer context window at 1,050,000 tokens, compared with 262,144 tokens for Qwen 3.8 27B.
Which scores higher on the Artificial Analysis Intelligence Index, GPT 5.6 Luna or Qwen 3.8 27B?
GPT 5.6 Luna scores higher on the Artificial Analysis Intelligence Index. GPT 5.6 Luna scores 23.8, ranked #31 of 50. Qwen 3.8 27B scores 20.1, ranked #33 of 50.
Can I use GPT 5.6 Luna and Qwen 3.8 27B through one API?
Yes. Both are served through the Phaseo API, so you can switch between them by changing the model id.