GPT-5.6 Sol vs Claude Fable 5
OpenAI vs Anthropic · Prices checked November 11, 2026
GPT-5.6 Sol is the cheaper of the two by a wide margin: $8.80 per million tokens blended against $22.00, roughly 2.5× less. A single 100K-input, 10K-output job costs $0.6000 on GPT-5.6 Sol against $1.50 on Claude Fable 5.
Pricing and capacity
RatesUSD per million tokens. Prices checked November 11, 2026.
| Metric | GPT-5.6 Sol | Claude Fable 5 | Difference |
|---|---|---|---|
| Input / 1M tokens | $4.00 | $10.00 | 2.5× |
| Output / 1M tokens | $20.00 | $50.00 | 2.5× |
| Blended · 70/30calculated | $8.80 | $22.00 | 2.5× |
| Blended · 50/50calculated | $12.00 | $30.00 | 2.5× |
| Blended · 80/20calculated | $7.20 | $18.00 | 2.5× |
| Blended · 20/80calculated | $16.80 | $42.00 | 2.5× |
| Job cost · 100K + 10Kcalculated | $0.6000 | $1.50 | 2.5× |
| Job cost · 1M + 100Kcalculated | $6.00 | $15.00 | 2.5× |
| Context window | 1,050,000 | 1,000,000 | 5% |
Input and output rates are as published by each provider. Blended and job-cost rows are calculated comparison metrics, not published prices — how they are derived.
GPT-5.6 Sol takes a 1,050,000-token context window against 1,000,000, giving a modest edge for long documents or whole-codebase work.
Benchmarks
These two models do not currently report scores on any of the same benchmark suites, so there is no like-for-like capability comparison to show. Rather than pad the page with one-sided numbers, the benchmark leaderboards list every score we do hold.
What each model is for
GPT-5.6 Sol
OpenAI · Frontier
The flagship tier of the GPT-5.6 family, aimed at complex reasoning, long-horizon agentic work, coding, biology and cybersecurity. In OpenAI's naming the number is the generation and Sol is a durable capability tier, so Sol advances on its own cadence rather than being replaced by the next decimal. Standard short-context pricing is $5/$30 per MTok with cached input at $0.50; requests above 272K tokens are billed at the long-context rate of $10/$45.
- Frontier reasoning
- Long-horizon agentic execution
- Coding and code review
- Programmatic tool calling in the Responses API
Claude Fable 5
Anthropic · Frontier
Anthropic's most powerful model, a new tier above Opus. Fable 5 keeps the 1M-token context window and multimodal input (text, image, file), and targets the hardest long-horizon agentic, coding and reasoning work. Priced at $10/$50 per MTok with $1.00 cached input.
- Most capable Claude to date
- State-of-the-art long-horizon agentic execution
- 1M-token context
- Text, image & file input
Frequently asked questions
Which is cheaper, GPT-5.6 Sol or Claude Fable 5?
GPT-5.6 Sol is the cheaper of the two by a wide margin: $8.80 per million tokens blended against $22.00, roughly 2.5× less. A single 100K-input, 10K-output job costs $0.6000 on GPT-5.6 Sol against $1.50 on Claude Fable 5. Blended cost weights input at 70% and output at 30%; price your own token split for an exact answer, since the cheaper model on a blended basis is not always cheaper for your workload.
Which has the larger context window, GPT-5.6 Sol or Claude Fable 5?
GPT-5.6 Sol takes a 1,050,000-token context window against 1,000,000, giving a modest edge for long documents or whole-codebase work. The context window caps everything in a single request: prompt, retrieved documents, conversation history and the model’s own output all share it.
Can I compare GPT-5.6 Sol and Claude Fable 5 on my own numbers?
Yes. Open both in the side-by-side comparison tool to see every field at once, or use the token calculator to price your actual prompt and monthly request volume against each model. Both are free and need no sign-up.
Price it for your own workload
Related matchups
Terms used on this page
Prices and scores are recomputed on every deploy from the catalogue. Prices checked November 11, 2026.