OpenAI
Sol and Luna give builders cheaper GPT-6 options
| API model | Input / 1M | Output / 1M |
|---|---|---|
| GPT-6 Sol | $2 | $10 |
| GPT-6 Luna | $0.10 | $0.50 |
- What changed
OpenAI launched both models September 22. Sol targets complex coding and agent work; Luna targets focused, high-volume tasks. Both accept text and images and return text.
- Why it matters
For 1 million uncached input and 200,000 output tokens spread across short requests, Sol costs $4 and Luna $0.20 at standard rates. That is a price comparison, not a quality ranking.
- What to do
Replay a few accepted tasks on both model IDs. Compare answer quality and total usage before routing volume to Luna.
Anthropic
Opus 5.5 costs less per token than Opus 5
| Per 1M tokens | Opus 5.5 | Opus 5 |
|---|---|---|
| Input | $4 | $5 |
| Output | $20 | $25 |
| Cache read | $0.20 | $0.50 |
- What changed
Claude Opus 5.5 is the first 5.5 model. Its input and output token rates are 20% below Opus 5; cache reads are 60% lower.
- Why it matters
Anthropic reports roughly 40% lower cost on its typical tasks because the model also uses fewer tokens. Treat that as a vendor result; your cost per completed task may differ.
- What to do
Run the same coding or research task on Opus 5 and 5.5. Record accepted result, tokens, cache use and retries.
TypeSafe AI
Jev returns decisions your code can use directly
| Question | Returns | Useful for |
|---|---|---|
| Choice | Option + probabilities | Routing |
| Score | Number + confidence | Prioritizing |
| Noul | 0–1 value | Yes/no signals |
- What changed
Jev takes state and typed questions, then returns structured values rather than prose. It launched in early access. TypeSafe lists $0.042 per million input tokens; output is unmetered.
- Why it matters
This is a narrower tool for classification, scoring and routing. TypeSafe’s speed and accuracy comparisons are its own tests, not independent proof.
- What to do
Try it on labeled support tickets. Measure wrong routes, low-confidence cases and total cost before allowing automatic action.
Also since the last issue
Useful updates
Copilot local sandboxing
GitHub’s September 23 public preview limits local agents’ file, network and credential access by project. It is off by default and applies to new sessions.
More models in Copilot
GitHub’s September 25 roundup lists Sol, Luna and Opus 5.5. Availability varies by Copilot plan; check the picker and usage terms.
Gemini speech API
Google’s September 23 release adds Flash and Flash-Lite TTS. Current API rates are $0.50 text input and $9 or $6 audio output per million tokens through December; both double January 1. The AI at Work edition has a sample.