Chatbots · Head-to-head

Claude vs GPT-5.6 Sol

Claude (freemium, AI Score 9.4/10) vs GPT-5.6 Sol (paid, AI Score 9.3/10). Side-by-side pricing, features, pros and cons, and which to pick.

The verdict

Pick Claude if…

→budget is the constraint
→your primary use case is developers and technical teams who want a coding agent running in their own repo, terminal and ide rather than a hosted editor, plus a chat assistant strong enough for long-form writing and 1m-token codebase analysis.
→you need: productivity, content-creation

Try Claude →

Pick GPT-5.6 Sol if…

→your primary use case is engineering teams building long-horizon coding or tool-use agents who need a frontier reasoning tier for the hard steps and can route easier calls to terra or luna on the same api key.
→you need: research

Try GPT-5.6 Sol →

Spec	Claude	GPT-5.6 Sol
Category	Chatbots	Chatbots
Pricing model	freemium	paid
Headline pricing	Free + Pro $17-20/mo + Max from $100/mo + Team $20-25/seat	API usage-based: Sol $5/$30 per 1M tokens; cheaper Terra and Luna tiers cut July 30
Free tier	Yes. The free plan runs Sonnet 5 as its default model and lists Claude Code as included, under usage caps Anthropic does not publish as a number.	No free API tier for Sol. Free and Go ChatGPT accounts default to the cheaper Luna tier instead, with a Think button and unlimited text chats.
AI Score	9.4/10	9.3/10
Best for	Developers and technical teams who want a coding agent running in their own repo, terminal and IDE rather than a hosted editor, plus a chat assistant strong enough for long-form writing and 1M-token codebase analysis.	Engineering teams building long-horizon coding or tool-use agents who need a frontier reasoning tier for the hard steps and can route easier calls to Terra or Luna on the same API key.
Editor's pick	✓ Yes	✓ Yes
Use cases	development agents productivity content-creation	development agents research
Date added	2025-03-15	2026-06-27

Chatbots · freemium

✓Claude Code is included at every tier including the $0 plan, so trying a full coding agent costs nothing beyond an account
✓Opus 5 pairs a 1M-token context with $5/$25 per-million API pricing, which Anthropic itself frames as half its Fable 5 flagship's rate
✓The free tier defaults to Sonnet 5, a current-generation agent-tuned model, rather than parking unpaid users on last year's release
✓The coding agent runs locally with no remote code index and asks permission before edits, which removes a whole category of security-review question
✓Still the strongest of the major assistants for long-form writing and sustained reasoning over a large codebase or document set

×No image generation, no video generation and no full-duplex voice model, so a $20 ChatGPT or Gemini subscription covers more surfaces than a $20 Claude one
×Anthropic publishes no usage quota beyond "usage limits apply", and prints "From $100 per month" against both Max 5x and Max 20x, so the practical ceiling is unknowable before you buy
×Opus 5's headline benchmark wins are vendor-run on Anthropic's chosen tasks, with independent leaderboards not yet carrying a full line at launch
×The four-rung ladder of Sonnet 5, Opus 5, Fable 5 and the gated Mythos 5 is genuinely hard to read, and the top capability tier is not something a subscription can buy

Chatbots · paid

✓Generally available since July 9, 2026 — no waitlist or government-coordination gate, so it can carry production traffic
✓Same-family routing by difficulty: Sol for hard problems, Terra and Luna for everything else on one API key
✓Reasoning effort is an explicit control, both as an API parameter and as a consumer slider in ChatGPT Plus and Pro
✓Cerebras-backed serving with a quoted ~750 tokens/sec, which matters for agent loops and streaming code output
✓Now the model answering paid ChatGPT conversations, with OpenAI reporting 68% fewer factual errors on its high-stakes evals

×Sol's $5/$30 has not moved since launch while Terra and Luna were cut 20% and 80% — the tier long agent runs bill against is the one not getting cheaper
×Every headline number (Terminal-Bench SOTA, 68% factuality, ~750 tokens/sec) is OpenAI-measured on undisclosed evaluation sets, with no independent re-run published
×Named in the August 2026 third-party cyber evaluations, where models with safeguards removed pursued real people and organisations — a dual-use profile worth reviewing before security-sensitive use
×Open-weights rivals now score competitively on agentic benchmarks at a fraction of the price, narrowing Sol's case for mid-difficulty work

Updated 2026-08-10. Spec data sourced from official product pages and tracked in our public directory at /tools.