Claude Fable 5 is the strongest alternative to Gemini 3.1 Pro — it scores 100 vs 99 on research at $10/1M input (Gemini 3.1 Pro costs $2/1M). DeepSeek R1 is the budget swap: $0.55/1M input is 73% cheaper. DeepSeek R1 is the top open-weight option if you want a model you can self-host.
The shortest way to see the safest default, the lower-cost option, and the specialist pick before you read deeper.
Claude Fable 5 is the safest overall answer here when you want the strongest default instead of the lowest list price.
Meta: Llama 3.1 8B Instruct is the lower-cost option to start with when you still need useful output at scale.
Gemini 3.1 Flash is the better pick when response speed matters more than maximum reasoning depth.
Claude Fable 5 beats Gemini 3.1 Pro on research (100 vs 99) at $10/1M input tokens.
DeepSeek R1 cuts input cost by 73% ($0.55 vs $2/1M) while scoring 89/100 on research.
DeepSeek R1 is open-weight — self-host it or run it via low-cost API providers at $0.55/1M input.
Choose Claude Fable 5 when you want the closest overall replacement — the hardest coding tasks.
Choose DeepSeek R1 when token volume matters more than peak quality — it is 73% cheaper on input.
Staying with Google? Gemini 3.1 Flash is the strongest in-house switch at $0.5/1M input.
Switch the scoring lens to see whether the top answer changes when you care more about cost, speed, or long-document work.
Anthropic / Premium / Jun 9, 2026
New global #1 — 80.3% SWE-Bench Pro, the most capable model generally available.
Ranks models by the broadest mix of coding, writing, research, and long-context usefulness.
You are latency- or cost-sensitive, or your tasks don't need frontier-level reasoning — Opus 4.8 at half the price is plenty.
The fastest way to see where the recommendation shifts when your priority changes.
Best for research and deep document analysis — 2M context at the best premium price.
New global #1 — 80.3% SWE-Bench Pro, the most capable model generally available.
Open-source o1-class reasoning at a fraction of the cost.
Best cheap AI for broad day-to-day work — now with 1M context.
The frontier ceiling — same model as Fable 5, safeguards lifted, partner-only.
80.3% SWE-Bench Pro — the new #1, up from Opus 4.8's 69.2% and GPT-5.5's 58.6%
1932 on GDPval-AA, ahead of Opus 4.8 (1890) and GPT-5.5 (1769)
1M-token context at standard pricing, 128K max output per request
Mythos-class capability released for general use with new cyber-risk safeguards
Priced at $10/$50 per 1M tokens — double Opus 4.8 ($5/$25)
Deliberate pace; not for latency-sensitive interactive apps
Standard-use safeguards block some high-risk security workloads (use Mythos 5 with partner access)
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Claude Fable 5 is the strongest overall alternative. It scores 100/100 on research (Gemini 3.1 Pro: 99/100) and costs $10/1M input vs $2/1M. New global #1 — 80.3% SWE-Bench Pro, the most capable model generally available.
DeepSeek R1 at $0.55/1M input — 73% cheaper than Gemini 3.1 Pro's $2/1M. It scores 89/100 on research, so expect a quality step down on the hardest tasks.
Yes — DeepSeek R1 is the strongest open-weight alternative (research: 89/100). You can self-host it or use hosted APIs at $0.55/1M input, and there are no per-seat subscription fees.
Gemini 3.1 Flash — same provider, same API surface, $0.5/1M input vs $2/1M. Best cheap AI for broad day-to-day work — now with 1M context.
The best research and long-context model available.