Mistral Large 4 vs GPT 5.6 Luna

Pick a route and service tier under each model. Prices, the calculator and the verdicts follow your choice.

Mistral Large 4
GPT 5.6 Luna

At a glance

Generated from the rows below

Choose Mistral Large 4 for

No clear lead on the rows below.

Choose GPT 5.6 Luna for

  • The lowest cost per typical request ($0.001)
  • The largest context window: 1,050,000 tokens
  • The most routes on Phaseo: 7

Overview

Context window
1.049Mtokens
1.05Mtokens (best)
Max output
Not published
128Ktokens
Takes
Text, Image
Text, Image
Returns
Text
Text
Routes on Phaseo
2 providers
7 providers
(best)
Released
29 Oct 2026
9 Jul 2026

Pricing

Prices on the route and tier chosen under each model

Mistral · StandardOpenAI · Standard
Input
$0.70/ 1M tokens
from $0.20/ 1M tokensInput ≤ 272K$0.20Input > 272K$0.40
Output
$2.10/ 1M tokens
from $1.20/ 1M tokensInput ≤ 272K$1.20Input > 272K$1.80
Cache read
$0.07/ 1M tokens
from $0.02/ 1M tokensInput ≤ 272K$0.02Input > 272K$0.04
Cache write
No write fee listed
from $0.25/ 1M tokensInput ≤ 272K$0.25Input > 272K$0.50
Typical request2K tokens in, 500 out
$0.0025
$0.001 (best)

What will it cost?

Estimate a month of requests on the route and tier chosen for each model

ModelPer requestPer month
Mistral Large 4Mistral · Standard$0.0025$73.50
GPT 5.6 LunaOpenAI · Standard$0.001$30.00

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

Latency p50
No traffic in the last 5 days
No traffic in the last 5 days
Throughput p50
No traffic in the last 5 days
No traffic in the last 5 days
Requests, last 24 hours
None in the last 24 hours
None in the last 24 hours

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

Tool calling
Yes
Yes
Structured outputs
Yes
Yes
Reasoning effort
Yes
Yes
Web search
Not listed
Yes
Prompt cachingon the chosen route
Yes
Yes
Quantisationon the chosen route
Not stated
Not stated

Benchmarks

Only results that two or more of the selected models report get a row

Compare at effort

Artificial Analysis Intelligence Index Independent

Higher is better · at High effort · 1 of 2 models tested

Mistral Large 426.1
GPT 5.6 LunaNot tested at this effort

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

  1. #1Claude Opus 5.559.1
  2. #2GPT-6 Astra56.9
  3. #3GPT-6.1 Sol54.6
  4. #4Claude Sonnet 5.554.5
  5. #5GPT-6.1 Terra51.3
  6. #28Mistral Large 426.1
  7. #31GPT 5.6 Luna23.8

Artificial Analysis Coding Index171 models ranked

  1. #1Claude Fable 5.181.6
  2. #2GPT 5.6 Sol78.3
  3. #3Claude Opus 578.0
  4. #4GPT-6 Astra77.1
  5. #5Grok 4.676.8
  6. #24GPT 5.6 Luna71.4

Artificial Analysis Agentic Index112 models ranked

  1. #1Claude Fable 5.157.9
  2. #2Claude Opus 556.5
  3. #3Qwen 3.8 Max 090256.0
  4. #4Muse Spark 1.355.5
  5. #5Qwen 3.8 Flash Next53.6
  6. #20GPT 5.6 Luna42.1

Epoch Capabilities Index164 models ranked

  1. #1GPT-6 Astra169.1
  2. #2Claude Opus 5.5168.4
  3. #3GPT-6.1 Terra168.1
  4. #4GPT-6.1 Sol167.8
  5. #5Claude Sonnet 5.5166.7
  6. #29GPT 5.6 Luna156.7
Cost
Artificial Analysis Evaluation Cost (USD)matched by effort level · lower is better
$1,359
Not tested at this effort
General
Not tested at this effort
299.3

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.

$0.70 in · $2.10 out1.05M context · Standard, Batch, Priority
—
—
$0.20 in · $1.20 out$10.00 per 1K requests Native web search requests1.05M context · Standard, Batch, Flex, Priority
—
$0.20 in · $1.20 out1.05M context
$0.77 in · $2.31 out1.05M context · Standard, Priority
—
—
$0.20 in · $1.20 out1.05M context
—
$0.20 in · $1.20 out1.05M context
—
$0.20 in · $1.20 outfrom $10.00 per 1K requests Web search1M context
—
$0.22 in · $1.32 out$11.00 per 1K requests Native web search requests1.05M context · Standard, Batch, Flex, Priority
—
$0.22 in · $1.32 out1.05M context · Standard, Flex, Priority
Also listed, not routed
3 providers
17 providers

To price the whole page on one of these providers, pick it under the model’s name at the top.

Details

Knowledge cutoff
Not published
Feb 2026
Status
Available
Available
Licence
Mistral Ecosystem Open-Weight License
Proprietary
Subscription plans
None mapped
21 plansChatGPT Business, ChatGPT Business Codex, ChatGPT Business Premium…
API docs
Not published

Mistral Large 4 vs GPT 5.6 Luna: side-by-side summary

Mistral Large 4 and GPT 5.6 Luna are both available through the Phaseo API, so switching between them is a change of model id rather than a new integration.

Mistral Large 4 is from Mistral. It has a 1,048,576-token context window. On its cheapest route it costs $0.70 per 1M input tokens and $2.10 per 1M output tokens.

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.

Mistral Large 4 model details, providers and pricingGPT 5.6 Luna model details, providers and pricing

Mistral Large 4 vs GPT 5.6 Luna at a glance

Mistral Large 4 and GPT 5.6 Luna compared on price, context window and benchmark score
AttributeMistral Large 4GPT 5.6 Luna
LabMistralOpenAI
Input price per 1M tokens$0.70$0.20
Output price per 1M tokens$2.10$1.20
Context window1,048,576 tokens1,050,000 tokens
Max outputNot listed128,000 tokens
Artificial Analysis Intelligence Index26.1 (#28)23.8 (#31)

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, Mistral Large 4 or GPT 5.6 Luna?

GPT 5.6 Luna is cheaper for both input and output tokens. Mistral Large 4 costs $0.70 per 1M input tokens and $2.10 per 1M output tokens; GPT 5.6 Luna costs $0.20 and $1.20, each on its cheapest standard route on Phaseo.

Which has the longer context window, Mistral Large 4 or GPT 5.6 Luna?

GPT 5.6 Luna has the longer context window at 1,050,000 tokens, compared with 1,048,576 tokens for Mistral Large 4.

Which scores higher on the Artificial Analysis Intelligence Index, Mistral Large 4 or GPT 5.6 Luna?

Mistral Large 4 scores higher on the Artificial Analysis Intelligence Index. Mistral Large 4 scores 26.1, ranked #28 of 50. GPT 5.6 Luna scores 23.8, ranked #31 of 50.

Can I use Mistral Large 4 and GPT 5.6 Luna through one API?

Yes. Both are served through the Phaseo API, so you can switch between them by changing the model id.

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