Relative pricing vs GPT-6Reports state that GPT-6 Sol and Luna launched at roughly a 50% lower API/token price than the GPT-5.6 Sol and Luna series, implying GPT-5.6 Luna was about twice as expensive as the newly announced GPT-6 Luna.
OPENAI · MODEL RELEASE TRACKER
GPT-5.6 Luna
GPT-5.6 Luna is a released model in OpenAI's GPT-5.6 series, referenced as the predecessor to later GPT-6 Luna/Sol releases. It has been reported to dominate token consumption on the OpenRouter platform.CURRENT SNAPSHOT3/5 DIMENSIONS WITH DATA
The dimensions that change the decision.
Not established from the available sources.
Not established from the available sources.
Benchmark performance relative to GPT-6 LunaOne source reports that GPT-6 Luna "improves on its predecessor by 5.4 percentage points," which the article frames as an improvement over the prior Luna model (the GPT-5.6 Luna). The specific benchmark or metric is not named in the excerpt.
Reported token consumption on OpenRouterAn industry article reported that GPT 5.6 Luna recently dominated token consumption on the OpenRouter platform, while noting this may reflect models generating more tokens per prompt rather than a larger user base.
VERIFIABLE FACTS
Every value stays attached to a source and date.
PRICING · Relative pricing vs GPT-6DEVELOPER CLAIM
Reports state that GPT-6 Sol and Luna launched at roughly a 50% lower API/token price than the GPT-5.6 Sol and Luna series, implying GPT-5.6 Luna was about twice as expensive as the newly announced GPT-6 Luna.
BENCHMARKS · Benchmark performance relative to GPT-6 LunaDEVELOPER CLAIM
One source reports that GPT-6 Luna "improves on its predecessor by 5.4 percentage points," which the article frames as an improvement over the prior Luna model (the GPT-5.6 Luna). The specific benchmark or metric is not named in the excerpt.
OTHER · Token consumption on OpenRouterDEVELOPER CLAIM
Reporting indicates that GPT-5.6 Luna recently dominated token consumption on the OpenRouter platform, meaning it accounted for a large share of tokens consumed there during the reported period.
RELEASE · Release / predecessor statusDEVELOPER CLAIM
GPT-5.6 Luna is referenced as a predecessor (part of the GPT-5.6 series) to the newly announced GPT-6 Luna and Sol models.
AVAILABILITY · Reported token consumption on OpenRouterDEVELOPER CLAIM
An industry article reported that GPT 5.6 Luna recently dominated token consumption on the OpenRouter platform, while noting this may reflect models generating more tokens per prompt rather than a larger user base.
WHAT CHANGED
Stored passport versions, without reconstructed history.
AVAILABILITY · Reported token consumption on OpenRouter+ An industry article reported that GPT 5.6 Luna recently dominated token consumption on the OpenRouter platform, while noting this may reflect models generating more tokens per prompt rather than a larger user base.
RELEASE · Release / predecessor status+ GPT-5.6 Luna is referenced as a predecessor (part of the GPT-5.6 series) to the newly announced GPT-6 Luna and Sol models.
PRICING · Pricing relative to GPT-6 Luna− Reporting from OpenAI and contemporaneous coverage states that GPT-6 Luna was offered at roughly a 50% reduction in API token pricing compared with the 5.6 series (Sol and Luna). This implies GPT-5.6 Luna had approximately double the token price of GPT-6 Luna, though exact 5.6-series prices are not listed in these excerpts.
PRICING · Relative pricing vs GPT-6+ Reports state that GPT-6 Sol and Luna launched at roughly a 50% lower API/token price than the GPT-5.6 Sol and Luna series, implying GPT-5.6 Luna was about twice as expensive as the newly announced GPT-6 Luna.